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01-ACL commands

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ACL commands

acl

Use acl to create an ACL and enter its view, or enter the view of an existing ACL.

Use undo acl to delete the specified or all ACLs.

Syntax

Command set 1:

acl [ ipv6 ] { name acl-name | number acl-number [ name acl-name ] [ match-order { auto | config } ] }

undo acl [ ipv6 ] { all | name acl-name | number acl-number }

Command set 2:

acl [ ipv6 ] { advanced | basic } { acl-number | name acl-name } [ match-order { auto | config } ]

acl mac { acl-number | name acl-name } [ match-order { auto | config } ]

acl user-defined { acl-number | name acl-name }

undo acl [ ipv6 ] { all | { advanced | basic } { acl-number | name acl-name } }

undo acl mac { all | acl-number | name acl-name }

undo acl user-defined { all | acl-number | name acl-name }

Default

No ACLs exist.

Views

System view

Predefined user roles

network-admin

Parameters

ipv6: Specifies the IPv6 ACL type. To specify the IPv4 ACL type, do not use this keyword.

basic: Specifies the basic ACL type.

advanced: Specifies the advanced ACL type.

mac: Specifies the Layer 2 ACL type.

user-defined: Specifies the user-defined ACL type.

number acl-number: Assigns a number to the ACL. The following are available value ranges:

· 2000 to 2999 for basic ACLs.

· 3000 to 3999 for advanced ACLs.

· 4000 to 4999 for Layer 2 ACLs.

· 5000 to 5999 for user-defined ACLs.

name acl-name: Assigns a name to the ACL. The acl-name argument is a case-insensitive string of 1 to 63 characters. It must start with an English letter and to avoid confusion, it cannot be all.

match-order: Specifies the order in which ACL rules are compared against packets.

auto: Compares ACL rules in depth-first order.

config: Compares ACL rules in ascending order of rule ID. The rule with a smaller ID has a higher priority. If you do not specify a match order, the config order applies by default. The match order for the user-defined ACL can only be config.

all: Specifies all ACLs of the specified type.

Usage guidelines

If you create a numbered ACL, you can enter the view of the ACL by using either of the following commands:

· The acl [ ipv6 ] number acl-number command.

· The acl { [ ipv6 ] { advanced | basic } | mac | user-defined } acl-number command.

If you create a ACL by using the acl [ ipv6 ] number acl-number name acl-name command, you can enter the view of the ACL by using either of the following commands:

· acl [ ipv6 ] name acl-name (for only basic ACLs and advanced ACLs).

· acl [ ipv6 ] number acl-number [ name acl-name ].

· acl { [ ipv6 ] { advanced | basic } | mac | user-defined } name acl-name.

If you create a named ACL by using the acl { [ ipv6 ] { advanced | basic } | mac | user-defined } name acl-name command, you can enter the view of the ACL by using either of the following commands:

· acl [ ipv6 ] name acl-name (for only basic ACLs and advanced ACLs).

· acl { [ ipv6 ] { advanced | basic } | mac | user-defined } name acl-name.

You can change the match order only for ACLs that do not contain any rules.

Matching packets are forwarded through slow forwarding if an ACL rule contains match criteria or has functions enabled in addition to the following match criteria and functions:

· Source and destination IP addresses.

· Source and destination ports.

· Transport layer protocol.

· ICMP or ICMPv6 message type, message code, and message name.

· VPN instance.

· Logging.

· Time range.

Slow forwarding requires packets to be sent to the control plane for forwarding entry calculation, which affects the device forwarding performance.

Examples

# Create IPv4 basic ACL 2000 and enter its view.

<Sysname> system-view

[Sysname] acl basic 2000

[Sysname-acl-ipv4-basic-2000]

# Create IPv4 basic ACL flow and enter its view.

<Sysname> system-view

[Sysname] acl basic name flow

[Sysname-acl-ipv4-basic-flow]

# Create IPv4 advanced ACL 3000 and enter its view.

<Sysname> system-view

[Sysname] acl advanced 3000

[Sysname-acl-ipv4-adv-3000]

# Create IPv6 basic ACL 2000 and enter its view.

<Sysname> system-view

[Sysname] acl ipv6 basic 2000

[Sysname-acl-ipv6-basic-2000]

# Create IPv6 basic ACL flow and enter its view.

<Sysname> system-view

[Sysname] acl ipv6 basic name flow

[Sysname-acl-ipv6-basic-flow]

# Create IPv6 advanced ACL abc and enter its view.

<Sysname> system-view

[Sysname] acl ipv6 advanced name abc

[Sysname-acl-ipv6-adv-abc]

# Create Layer 2 ACL 4000 and enter its view.

<Sysname> system-view

[Sysname] acl mac 4000

[Sysname-acl-mac-4000]

# Create Layer 2 ACL flow and enter its view.

<Sysname> system-view

[Sysname] acl mac name flow

[Sysname-acl-mac-flow]

# Create user-defined ACL 5000 and enter its view.

<Sysname> system-view

[Sysname] acl user-defined 5000

[Sysname-acl-user-5000]

# Create user-defined ACL flow and enter its view.

<Sysname> system-view

[Sysname] acl user-defined name flow

[Sysname-acl-user-flow]

Related commands

display acl

acl copy

Use acl copy to create an ACL by copying an ACL that already exists.

Syntax

acl [ ipv6 | mac | user-defined ] copy { source-acl-number | name source-acl-name } to { dest-acl-number | name dest-acl-name }

Views

System view

Predefined user roles

network-admin

Parameters

ipv6: Specifies the IPv6 ACL type.

mac: Specifies the Layer 2 ACL type.

user-defined: Specifies the user-defined ACL type.

source-acl-number: Specifies an existing source ACL by its number. The following are available value ranges:

· 2000 to 2999 for basic ACLs.

· 3000 to 3999 for advanced ACLs.

· 4000 to 4999 for Layer 2 ACLs.

· 5000 to 5999 for user-defined ACLs.

name source-acl-name: Specifies an existing source ACL by its name. The source-acl-name argument is a case-insensitive string of 1 to 63 characters.

dest-acl-number: Assigns a unique number to the new ACL. The following are available value ranges:

· 2000 to 2999 for basic ACLs.

· 3000 to 3999 for advanced ACLs.

· 4000 to 4999 for Layer 2 ACLs.

· 5000 to 5999 for user-defined ACLs.

name dest-acl-name: Assigns a unique name to the new ACL. The dest-acl-name argument is a case-insensitive string of 1 to 63 characters. It must start with an English letter and to avoid confusion, it cannot be all.

Usage guidelines

The new ACL and the source ACL must be the same type.

When specifying an ACL by its number, follow these rules:

· To specify an IPv6 ACL, you must specify both its ACL number and the ipv6 keyword.

· To specify a Layer 2 ACL, you can specify its ACL number without the mac keyword.

· To specify a user-defined ACL, you can specify its ACL number without the user-defined keyword.

To specify an IPv6 ACL, Layer 2 ACL, or user-defined ACL by a name, you must specify both the ACL name and the ipv6, mac, or user-defined keyword.

The new ACL has the same properties and content as the source ACL, but uses a different number or name from the source ACL.

Examples

# Create IPv4 basic ACL 2002 by copying IPv4 basic ACL 2001.

<Sysname> system-view

[Sysname] acl copy 2001 to 2002

# Create IPv4 basic ACL paste by copying IPv4 basic ACL test.

<Sysname> system-view

[Sysname] acl copy name test to name paste

acl logging interval

Use acl logging interval to enable logging for packet filtering and set the interval.

Use undo acl logging interval to restore the default.

Syntax

acl logging interval interval

undo acl logging interval

Default

The interval is 0. The device does not generate log entries for packet filtering.

Views

System view

Predefined user roles

network-admin

Parameters

interval: Specifies the interval at which log entries are generated and output. It must be a multiple of 5, in the range of 0 to 1440 minutes. To disable the logging, set the value to 0.

Usage guidelines

The logging feature is available for IPv4 or IPv6 ACL rules that have the logging keyword.

You can configure the ACL module to generate log entries for packet filtering and output them to the information center at the output interval. The log entry records the number of matching packets and the matched ACL rules. When the first packet of a flow matches an ACL rule, the output interval starts, and the device immediately outputs a log entry for this packet. When the output interval ends, the device outputs a log entry for subsequent matching packets of the flow. For more information about the information center, see Network Management and Monitoring Configuration Guide.

Examples

# Configure the device to generate and output packet filtering log entries every 10 minutes.

<Sysname> system-view

[Sysname] acl logging interval 10

Related commands

rule (IPv4 advanced ACL view)

rule (IPv4 basic ACL view)

rule (IPv6 advanced ACL view)

rule (IPv6 basic ACL view)

acl trap interval

Use acl trap interval to enable SNMP notifications for packet filtering and set the interval.

Use undo acl interval to restore the default.

Syntax

acl trap interval interval

undo acl trap interval

Default

The interval is 0. The device does not generate SNMP notifications for packet filtering.

Views

System view

Predefined user roles

network-admin

Parameters

interval: Specifies the interval at which SNMP notifications are generated and output. It must be a multiple of 5, in the range of 0 to 1440 minutes. To disable SNMP notifications, set the value to 0.

Usage guidelines

The SNMP notifications feature is available for IPv4 or IPv6 ACL rules that have the logging keyword.

You can configure the ACL module to generate SNMP notifications for packet filtering and output them to the SNMP module at the output interval. The notification records the number of matching packets and the matched ACL rules. When the first packet of a flow matches an ACL rule, the output interval starts, and the device immediately outputs a notification for this packet. When the output interval ends, the device outputs a notification for subsequent matching packets of the flow. For more information about SNMP, see Network Management and Monitoring Configuration Guide.

Examples

# Configure the device to generate and output packet filtering SNMP notifications every 10 minutes.

<Sysname> system-view

[Sysname] acl trap interval 10

Related commands

rule (IPv4 advanced ACL view)

rule (IPv4 basic ACL view)

rule (IPv6 advanced ACL view)

rule (IPv6 basic ACL view)

description

Use description to configure a description for an ACL.

Use undo description to delete an ACL description.

Syntax

description text

undo description

Default

An ACL does not have a description.

Views

IPv4 basic/advanced ACL view

IPv6 basic/advanced ACL view

Layer 2 ACL view

User-defined ACL view

Predefined user roles

network-admin

Parameters

text: Specifies a description, a case-sensitive string of 1 to 127 characters.

Examples

# Configure a description for IPv4 basic ACL 2000.

<Sysname> system-view

[Sysname] acl basic 2000

[Sysname-acl-ipv4-basic-2000] description This is an IPv4 basic ACL.

Related commands

display acl

Use display acl to display ACL configuration and match statistics.

Syntax

display acl [ ipv6 | mac | user-defined ] { acl-number | all | name acl-name }

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

ipv6: Specifies the IPv6 ACL type.

mac: Specifies the Layer 2 ACL type.

user-defined: Specifies the user-defined ACL type.

acl-number: Specifies an ACL by its number. The following are available value ranges:

· 2000 to 2999 for basic ACLs.

· 3000 to 3999 for advanced ACLs.

· 4000 to 4999 for Layer 2 ACLs.

· 5000 to 5999 for user-defined ACLs.

all: Specifies all ACLs of the specified type.

name acl-name: Specifies an ACL by its name. The acl-name argument is a case-insensitive string of 1 to 63 characters.

Usage guidelines

This command displays ACL rules in config or auto order, whichever is configured.

To specify the IPv4 ACL type, do not specify the ipv6, mac, or user-defined keyword.

Examples

# Display configuration and match statistics for IPv4 basic ACL 2001.

<Sysname> display acl 2001

Basic IPv4 ACL 2001, 1 rule, match-order is auto,

This is an IPv4 basic ACL.

ACL's step is 5, start ID is 0

rule 5 permit source 1.1.1.1 0

rule 5 comment This rule is used on Ten-GigabitEthernet1/0/1.

Table 1 Command output

Field	Description
Basic IPv4 ACL 2001	Type and number of the ACL. The following field information is about IPv4 basic ACL 2001.
1 rule	The ACL contains one rule.
match-order is auto	The match order for the ACL is auto, which sorts ACL rules in depth-first order. This field is not displayed when the match order is config.
This is an IPv4 basic ACL.	Description of the ACL.
ACL's step is 5	The rule numbering step is 5.
start ID is 0	The start rule ID is 0.
rule 5 permit source 1.1.1.1 0	Content of rule 5. The rule permits packets sourced from the IP address 1.1.1.1.
rule 5 comment This rule is used on Ten-GigabitEthernet1/0/1.	Comment of rule 5.
Stateful	Only the S6800, S6860, and S6861 switch series support this field. A stateful rule is deployed by the controller. After a controller deploys a stateful ACL to an interface, the switch applies the stateful ACL to filter packets on the interface. When the first packet of a flow matches a rule in the stateful ACL, the switch creates a dynamic ACL and installs a rule into the dynamic ACL as follows: · Uses the same source and destination IP addresses as the first matching packet, except that the addresses are swapped. · Uses the same source and destination port numbers as the first matching packet, except that the port numbers are swapped. The dynamic ACL is applied to the reverse direction of the stateful ACL on the interface. The stateful ACL works with the dynamic ACL to allow two-way communication between network entities.
Dynamic	Only the S6800, S6860, and S6861 switch series support this field. A dynamic rule is added dynamically by an application module.

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display packet-filter

Use display packet-filter to display ACL application information for packet filtering.

Syntax

display packet-filter { interface [ interface-type interface-number ] | l2vpn-ac [ interface interface-type interface-number [ service-instance instance-id ] ] | vlan-interface } [ inbound | outbound ] [ slot slot-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

interface [ interface-type interface-number ]: Specifies an interface by its type and number. If you do not specify an interface, this command displays ACL application information for packet filtering on all interfaces. If you specify an Ethernet interface, you do not need to specify the slot slot-number option.

l2vpn-ac [ interface interface-type interface-number [ service-instance instance-id ] ]: Specifies an Ethernet service instance on an interface. The interface-type interface-number argument represents the interface type and number. The instance-id argument represents the ID of the Ethernet service instance, in the range of 1 to 4096. If you do not specify an interface, this command displays ACL application information for all Ethernet service instances on all interfaces. If you specify an interface but do not specify an Ethernet service instance, this command displays ACL application information for all Ethernet service instances on the specified interface.

vlan-interface: Specifies the list of VLAN interfaces specified in the packet-filter vlan-interface command.

inbound: Specifies the inbound direction.

outbound: Specifies the outbound direction.

slot slot-number: Specifies an IRF member device by its member ID. If you do not specify a member device, this command displays ACL application information for packet filtering for the master device.

Usage guidelines

If neither the inbound keyword nor the outbound keyword is specified, this command displays ACL application information for packet filtering in both directions.

Examples

# Display ACL application information for inbound packet filtering on interface Ten-GigabitEthernet 1/0/1.

<Sysname> display packet-filter interface ten-gigabitethernet 1/0/1 inbound

Interface: Ten-GigabitEthernet1/0/1

Inbound policy:

IPv4 ACL 2001, Share-mode

IPv6 ACL 2002 (Failed)

MAC ACL 4003

# Display ACL application information for inbound and outbound packet filtering on the list of VLAN interfaces.

<Sysname> display packet-filter vlan-interface

VLAN interface : 2 to 5

Inbound policy:

IPv4 ACL 2001

IPv4 default action: Deny (Failed)

VLAN interface : 2 to 5

Outbound policy:

MAC ACL 4001, Hardware-count

MAC default action: Deny

# Display ACL application information for inbound packet filtering on Ethernet service instance 1 of Ten-GigabitEthernet 1/0/1.

<Sysname> display packet-filter l2vpn-ac interface ten-gigabitethernet 1/0/1 service-instance 1 inbound

Interface: Ten-GigabitEthernet1/0/1 Service Instance ID: 1

Inbound policy:

IPv4 ACL 2001

IPv6 ACL 2002 (Failed)

MAC ACL 4003, Hardware-count (Failed)

Table 1 Command output

Field	Description
Interface	Interface to which the ACL applies.
VLAN interface	List of VLAN interfaces specified in the packet-filter vlan-interface command.
Interface: Ten-GigabitEthernet1/0/1 Service Instance ID: 1	Ethernet service instance to which the ACL applies. Ten-GigabitEthernet1/0/1 is the interface where the Ethernet service instance resides.
Inbound policy	ACL used for filtering incoming traffic.
Outbound policy	ACL used for filtering outgoing traffic.
IPv4 ACL 2001	IPv4 basic ACL 2001 has been successfully applied.
IPv6 ACL 2002 (Failed)	The device has failed to apply IPv6 basic ACL 2002.
Hardware-count	ACL rule match counting in hardware has been successfully enabled.
Hardware-count (Failed)	The device has failed to enable counting ACL rule matches in hardware.
IPv4 default action	Packet filter default action for packets that do not match any IPv4 ACLs: · Deny—The default action deny has been successfully applied for packet filtering. · Deny (Failed)—The device has failed to apply the default action deny for packet filtering. The action permit still functions. · Permit—The default action permit has been successfully applied for packet filtering. · Hardware-count—The hardware-count feature has been successfully applied for the default action for packet filtering. · Hardware-count (Failed)—The device has failed to apply the hardware-count feature for the packet filtering default action.
IPv6 default action	Packet filter default action for packets that do not match any IPv6 ACLs: · Deny—The default action deny has been successfully applied for packet filtering. · Deny (Failed)—The device has failed to apply the default action deny for packet filtering. The action permit still functions. · Permit—The default action permit has been successfully applied for packet filtering. · Hardware-count—The hardware-count feature has been successfully applied for the default action for packet filtering. · Hardware-count (Failed)—The device has failed to apply the hardware-count feature for the packet filtering default action.
MAC default action	Packet filter default action for packets that do not match any Layer 2 ACLs: · Deny—The default action deny has been successfully applied for packet filtering. · Deny (Failed)—The device has failed to apply the default action deny for packet filtering. The action permit still functions. · Permit—The default action permit has been successfully applied for packet filtering. · Hardware-count—The hardware-count feature has been successfully applied for the default action for packet filtering. · Hardware-count (Failed)—The device has failed to apply the hardware-count feature for the packet filtering default action.

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display packet-filter statistics

Use display packet-filter statistics to display packet filtering statistics.

Syntax

display packet-filter statistics { interface interface-type interface-number | l2vpn-ac interface interface-type interface-number service-instance instance-id | vlan-interface } { inbound | outbound } [ default | [ ipv6 | mac | user-defined ] { acl-number | name acl-name } ] [ brief ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

interface interface-type interface-number: Specifies an interface by its type and number.

l2vpn-ac interface interface-type interface-number service-instance instance-id: Specifies an Ethernet service instance on an interface. The interface-type interface-number argument represents the interface type and number. The instance-id argument represents the ID of the Ethernet service instance, in the range of 1 to 4096.

vlan-interface: Specifies the list of VLAN interfaces specified in the packet-filter vlan-interface command.

inbound: Specifies the inbound direction.

outbound: Specifies the outbound direction.

default: Displays the default action statistics for packet filtering.

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NOTE:

Only the S6820 switch series supports the default keyword.

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ipv6: Specifies the IPv6 ACL type.

mac: Specifies the Layer 2 ACL type.

user-defined: Specifies the user-defined ACL type.

acl-number: Specifies an ACL by its number. The following are available value ranges:

· 2000 to 2999 for basic ACLs.

· 3000 to 3999 for advanced ACLs.

· 4000 to 4999 for Layer 2 ACLs.

· 5000 to 5999 for user-defined ACLs.

name acl-name: Specifies an ACL by its name. The acl-name argument is a case-insensitive string of 1 to 63 characters.

brief: Displays brief statistics.

Usage guidelines

If default, acl-number, name acl-name, ipv6, mac, or user-defined is not specified, this command displays packet filtering statistics for all ACLs.

Examples

# Display packet filtering statistics for all ACLs on incoming packets of Ten-GigabitEthernet 1/0/1.

<Sysname> display packet-filter statistics interface ten-gigabitethernet 1/0/1 inbound

Interface: Ten-GigabitEthernet1/0/1

Inbound policy:

IPv4 ACL 2001, Hardware-count

From 2011-06-04 10:25:21 to 2011-06-04 10:35:57

rule 0 permit source 2.2.2.2 0 (2 packets)

rule 5 permit source 1.1.1.1 0 (Failed)

rule 10 permit vpn-instance test (No resource)

Totally 2 packets permitted, 0 packets denied

Totally 100% permitted, 0% denied

IPv6 ACL 2000

MAC ACL 4000

rule 0 permit

IPv4 default action: Deny

From 2011-06-04 10:25:21 to 2011-06-04 10:35:57

Totally 7 packets

MAC default action: Deny

From 2011-06-04 10:25:34 to 2011-06-04 10:35:57

Totally 0 packets

# Display packet filtering statistics for ACL 3000 on incoming packets of the list of VLAN interfaces.

<Sysname> display packet-filter statistics vlan-interface inbound 3000

VLAN interface: 2 to 10

Inbound policy:

IPv4 ACL 3000, Hardware-count (Failed)

From 2011-06-04 10:25:34 to 2011-06-04 10:35:57

rule 0 permit source 2.2.2.2 0

rule 5 permit source 1.1.1.1 0 counting (2 packets)

rule 10 permit vpn-instance test

Totally 2 packets permitted, 0 packets denied

Totally 100% permitted, 0% denied

# Display packet filtering statistics for all ACLs on incoming packets on Ethernet service instance 1 of Ten-GigabitEthernet 1/0/1.

<Sysname> display packet-filter statistics l2vpn-ac interface ten-gigabitethernet 1/0/1 service-instance 1 inbound

Interface: Ten-GigabitEthernet1/0/1 Service Instance ID: 1

Inbound policy:

IPv4 ACL 2001, Hardware-count

From 2011-06-04 10:25:21 to 2011-06-04 10:35:57

rule 0 permit source 2.2.2.2 0 (2 packets)

rule 5 permit source 1.1.1.1 0 (Failed)

rule 10 permit vpn-instance test (No resource)

Totally 2 packets permitted, 0 packets denied

Totally 100% permitted, 0% denied

MAC ACL 4000

From 2011-06-04 10:25:34 to 2011-06-04 10:35:57

rule 0 permit

IPv6 ACL 2000

Table 2 Command output

Field	Description
Interface	Interface to which the ACL applies.
VLAN interface	List of VLAN interfaces specified in the packet-filter vlan-interface command.
Interface: Ten-GigabitEthernet1/0/1 Service Instance ID: 1	Ethernet service instance to which the ACL applies. Ten-GigabitEthernet1/0/1 is the interface where the Ethernet service instance resides.
Inbound policy	ACL used for filtering incoming traffic.
Outbound policy	ACL used for filtering outgoing traffic.
IPv4 ACL 2001	IPv4 basic ACL 2001 has been successfully applied.
IPv4 ACL 2002 (Failed)	The device has failed to apply IPv4 basic ACL 2002.
Hardware-count	ACL rule match counting in hardware has been successfully enabled.
Hardware-count (Failed)	The device has failed to enable counting ACL rule matches in hardware.
From 2011-06-04 10:25:21 to 2011-06-04 10:35:57	Start time and end time of the statistics.
2 packets	Two packets matched the rule. This field is not displayed when no packets matched the rule.
No resource	Resources are not enough for counting matches for the rule. In packet filtering statistics, this field is displayed for a rule when resources are not sufficient for rule match counting.
rule 5 permit source 1.1.1.1 0 (Failed)	The device has failed to apply rule 5.
Totally 2 packets permitted, 0 packets denied	Number of packets permitted and denied by the ACL.
Totally 100% permitted, 0% denied	Ratios of permitted and denied packets to all packets.
IPv4 default action	Packet filter default action for packets that do not match any IPv4 ACLs: · Deny—The default action deny has been successfully applied for packet filtering. · Deny (Failed)—The device has failed to apply the default action deny for packet filtering. The action permit still functions. · Permit—The default action permit has been successfully applied for packet filtering. · Hardware-count—The hardware-count feature has been successfully applied for the default action for packet filtering. · Hardware-count (Failed)—The device has failed to apply the hardware-count feature for the packet filtering default action.
IPv6 default action	Packet filter default action for packets that do not match any IPv6 ACLs: · Deny—The default action deny has been successfully applied for packet filtering. · Deny (Failed)—The device has failed to apply the default action deny for packet filtering. The action permit still functions. · Permit—The default action permit has been successfully applied for packet filtering. · Hardware-count—The hardware-count feature has been successfully applied for the default action for packet filtering. · Hardware-count (Failed)—The device has failed to apply the hardware-count feature for the packet filtering default action.
MAC default action	Packet filter default action for packets that do not match any Layer 2 ACLs: · Deny—The default action deny has been successfully applied for packet filtering. · Deny (Failed)—The device has failed to apply the default action deny for packet filtering. The action permit still functions. · Permit—The default action permit has been successfully applied for packet filtering. · Hardware-count—The hardware-count feature has been successfully applied for the default action for packet filtering. · Hardware-count (Failed)—The device has failed to apply the hardware-count feature for the packet filtering default action.
Totally 7 packets	The default action has been executed on seven packets.

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Related commands

reset packet-filter statistics

display packet-filter statistics sum

Use display packet-filter statistics sum to display accumulated packet filtering statistics for an ACL.

Syntax

display packet-filter statistics sum { inbound | outbound } [ ipv6 | mac | user-defined ] { acl-number | name acl-name } [ brief ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

inbound: Specifies the inbound direction.

outbound: Specifies the outbound direction.

ipv6: Specifies the IPv6 ACL type.

mac: Specifies the Layer 2 ACL type.

user-defined: Specifies the user-defined ACL type.

acl-number: Specifies an ACL by its number. The following are available value ranges:

· 2000 to 2999 for basic ACLs.

· 3000 to 3999 for advanced ACLs.

· 4000 to 4999 for Layer 2 ACLs.

· 5000 to 5999 for user-defined ACLs.

name acl-name: Specifies an ACL by its name. The acl-name argument is a case-insensitive string of 1 to 63 characters.

brief: Displays brief statistics.

Usage guidelines

To specify the IPv4 ACL type, do not specify the ipv6, mac, or user-defined keyword.

Examples

# Display accumulated packet filtering statistics for IPv4 basic ACL 2001 on incoming packets.

<Sysname> display packet-filter statistics sum inbound 2001

Sum:

Inbound policy:

IPv4 ACL 2001

rule 0 permit source 2.2.2.2 0 (2 packets)

rule 5 permit source 1.1.1.1 0

rule 10 permit vpn-instance test

Totally 2 packets permitted, 0 packets denied

Totally 100% permitted, 0% denied

# Display brief accumulated packet filtering statistics for IPv4 basic ACL 2000 on incoming packets.

<Sysname> display packet-filter statistics sum inbound 2000 brief

Sum:

Inbound policy:

IPv4 ACL 2000

Totally 2 packets permitted, 0 packets denied

Totally 100% permitted, 0% denied

Table 3 Command output

Field	Description
Sum	Accumulated packet filtering statistics.
Inbound policy	Accumulated packet filtering statistics in the inbound direction.
Outbound policy	Accumulated packet filtering statistics in the outbound direction.
IPv4 ACL 2001	Accumulated packet filtering statistics of IPv4 basic ACL 2001.
2 packets	Two packets matched the rule. This field is not displayed when no packets matched the rule.
Totally 2 packets permitted, 0 packets denied	Number of packets permitted and denied by the ACL.
Totally 100% permitted, 0% denied	Ratios of permitted and denied packets to all packets.

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Related commands

reset packet-filter statistics

display packet-filter verbose

Use display packet-filter verbose to display ACL application details for packet filtering.

Syntax

display packet-filter verbose { { interface interface-type interface-number | l2vpn-ac interface interface-type interface-number service-instance instance-id | vlan-interface } { inbound | outbound } [ [ ipv6 | mac | user-defined ] { acl-number | name acl-name } ] } [ slot slot-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

interface interface-type interface-number: Specifies an interface by its type and number. The slot slot-number option is not available for an Ethernet interface.

vlan-interface: Specifies the list of VLAN interfaces specified in the packet-filter vlan-interface command.

inbound: Specifies the inbound direction.

outbound: Specifies the outbound direction.

ipv6: Specifies the IPv6 ACL type.

mac: Specifies the Layer 2 ACL type.

user-defined: Specifies the user-defined ACL type.

acl-number: Specifies an ACL by its number. The following are available value ranges:

· 2000 to 2999 for basic ACLs.

· 3000 to 3999 for advanced ACLs.

· 4000 to 4999 for Layer 2 ACLs.

· 5000 to 5999 for user-defined ACLs.

name acl-name: Specifies an ACL by its name. The acl-name argument is a case-insensitive string of 1 to 63 characters.

slot slot-number: Specifies an IRF member device by its member ID. If you do not specify a member device, this command displays ACL application details for packet filtering for the master device.

Usage guidelines

If acl-number, name acl-name, ipv6, mac, or user-defined is not specified, this command displays application details of all ACLs for packet filtering.

Examples

# Display application details of all ACLs for inbound packet filtering on Ten-GigabitEthernet 1/0/1.

<Sysname> display packet-filter verbose interface ten-gigabitethernet 1/0/1 inbound

Interface: Ten-GigabitEthernet1/0/1

Inbound policy:

IPv4 ACL 2001

rule 0 permit

rule 5 permit source 1.1.1.1 0 (Failed)

rule 10 permit vpn-instance test (Failed)

IPv6 ACL 2000

rule 0 permit

MAC ACL 4000

IPv4 default action: Deny

MAC default action: Deny

# Display application details of the ACL for inbound packet filtering on the list of VLAN interfaces.

<Sysname> display packet-filter verbose vlan-interface inbound

VLAN interface: 2 to 10

Inbound policy:

IPv4 ACL 2001, Hardware-count

rule 0 permit

rule 5 permit source 1.1.1.1 0

rule 10 permit vpn-instance test

# Display application details of all ACLs for inbound packet filtering on Ethernet service instance 1 of Ten-GigabitEthernet 1/0/1.

<Sysname> display packet-filter verbose l2vpn-ac interface ten-gigabitethernet 1/0/1 service-instance 1 inbound

Interface: Ten-GigabitEthernet1/0/1 Service Instance ID: 1

Inbound policy:

IPv4 ACL 2001

rule 0 permit

rule 5 permit source 1.1.1.1 0 (Failed)

rule 10 permit vpn-instance test (Failed)

IPv6 ACL 2000

rule 0 permit

MAC ACL 4000

IPv4 default action: Deny

IPv6 default action: Deny

MAC default action: Deny

Table 4 Command output

Field	Description
Interface	Interface to which the ACL applies.
VLAN interface	List of VLAN interfaces specified in the packet-filter vlan-interface command.
Interface: Ten-GigabitEthernet1/0/1 Service Instance ID: 1	Ethernet service instance to which the ACL applies. Ten-GigabitEthernet1/0/1 is the interface where the Ethernet service instance resides.
Inbound policy	ACL used for filtering incoming traffic.
Outbound policy	ACL used for filtering outgoing traffic.
IPv4 ACL 2001	IPv4 basic ACL 2001 has been successfully applied.
IPv4 ACL 2002 (Failed)	The device has failed to apply IPv4 basic ACL 2002.
Hardware-count	ACL rule match counting in hardware has been successfully enabled.
Hardware-count (Failed)	The device has failed to enable counting ACL rule matches in hardware.
rule 5 permit source 1.1.1.1 0 (Failed)	The device has failed to apply rule 5.
IPv4 default action	Packet filter default action for packets that do not match any IPv4 ACLs: · Deny—The default action deny has been successfully applied for packet filtering. · Deny (Failed)—The device has failed to apply the default action deny for packet filtering. The action permit still functions. · Permit—The default action permit has been successfully applied for packet filtering. · Hardware-count—The hardware-count feature has been successfully applied for the default action for packet filtering. · Hardware-count (Failed)—The device has failed to apply the hardware-count feature for the packet filtering default action.
IPv6 default action	Packet filter default action for packets that do not match any IPv6 ACLs: · Deny—The default action deny has been successfully applied for packet filtering. · Deny (Failed)—The device has failed to apply the default action deny for packet filtering. The action permit still functions. · Permit—The default action permit has been successfully applied for packet filtering. · Hardware-count—The hardware-count feature has been successfully applied for the default action for packet filtering. · Hardware-count (Failed)—The device has failed to apply the hardware-count feature for the packet filtering default action.
MAC default action	Packet filter default action for packets that do not match any Layer 2 ACLs: · Deny—The default action deny has been successfully applied for packet filtering. · Deny (Failed)—The device has failed to apply the default action deny for packet filtering. The action permit still functions. · Permit—The default action permit has been successfully applied for packet filtering. · Hardware-count—The hardware-count feature has been successfully applied for the default action for packet filtering. · Hardware-count (Failed)—The device has failed to apply the hardware-count feature for the packet filtering default action.

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display qos-acl resource

Use display qos-acl resource to display QoS and ACL resource usage.

Syntax

display qos-acl resource [ advanced-mode ] [ slot slot-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

advanced-mode: Displays QoS and ACL resource usage in advanced mode. If you do not specify this keyword, the command displays QoS and ACL resource usage in common mode.

slot slot-number: Specifies an IRF member device by its member ID. If you do not specify a member device, this command displays QoS and ACL resource usage for all member devices.

Usage guidelines

This command does not display any usage data if the specified device does not support counting QoS and ACL resources.

Examples

# Display QoS and ACL resource usage in common mode.

<Sysname> display qos-acl resource

Interfaces: XGE1/0/1 to XGE1/0/16 (slot 1)

---------------------------------------------------------------------

Type Total Reserved Configured Remaining Usage

---------------------------------------------------------------------

VFP ACL 512 16 0 496 3%

IFP ACL 2048 516 0 1532 25%

IFP Meter 2048 515 0 1533 25%

IFP Counter 2048 515 0 1533 25%

EFP ACL 512 0 0 512 0%

EFP Meter 512 0 0 512 0%

EFP Counter 512 0 0 512 0%

Table 5 Command output

Field	Description
Interfaces	Interface range for the resources.
Type	Resource type: · VFP ACL—ACL resources for marking the local QoS ID before Layer 2 forwarding. · IFP ACL—Inbound ACL resources. · IFP Meter—Inbound traffic policing resources. · IFP Counter—Inbound traffic accounting resources. · EFP ACL—Outbound ACL resources. · EFP Meter—Outbound traffic policing resources. · EFP Counter—Outbound traffic accounting resources.
Total	Total number of resources.
Reserved	Number of reserved resources.
Configured	Number of resources that has been applied.
Remaining	Number of resources that you can apply.
Usage	Configured and reserved resources as a percentage of total resources. If the percentage is not an integer, this field displays the integer part. For example, if the actual usage is 50.8%, this field displays 50%.

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# Display QoS and ACL resource usage in advanced mode.

<Sysname> display qos-acl resource advanced-mode

Interfaces: XGE1/0/1 to XGE1/0/16 (slot 1)

------------------------------------------------------------------------

Stage Slice Total Configured Remaining Usage

------------------------------------------------------------------------

VFP 0 512 16 496 3%

IFP 1 2048 516 1532 25%

EFP 2 2048 515 1533 25%

Table 6 Command output

Field	Description
Interfaces	Interface range for the resources.
Stage	Processing stage: · VFP—Layer 2 forwarding. · IFP—Receiving. · EFP—Sending.
Slice	Slice ID.
Total	Total number of resources.
Configured	Number of resources that have been applied.
Remaining	Number of resources that can be applied.
Usage	Applied resources as a percentage of total resources. If the percentage is not an integer, this field displays the integer part. For example, if the actual usage is 50.8%, this field displays 50%.

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packet-filter (Ethernet service instance view)

Use packet-filter to apply an ACL to an Ethernet service instance to filter packets.

Use undo packet-filter to remove an ACL from an Ethernet service instance.

Syntax

packet-filter [ ipv6 | mac | user-defined ] { acl-number | name acl-name } { inbound | outbound } [ hardware-count ]

undo packet-filter [ ipv6 | mac | user-defined ] { acl-number | name acl-name } { inbound | outbound }

Default

No ACL is applied to an Ethernet service instance to filter packets.

Views

Ethernet service instance view

Predefined user roles

network-admin

Parameters

ipv6: Specifies the IPv6 ACL type.

mac: Specifies the Layer 2 ACL type.

user-defined: Specifies the user-defined ACL type.

acl-number: Specifies an ACL by its number. The following are available value ranges:

· 2000 to 2999 for basic ACLs.

· 3000 to 3999 for advanced ACLs.

· 4000 to 4999 for Layer 2 ACLs.

· 5000 to 5999 for user-defined ACLs.

name acl-name: Specifies an ACL by its name. The acl-name argument is a case-insensitive string of 1 to 63 characters.

inbound: Filters incoming packets.

outbound: Filters outgoing packets.

hardware-count: Enables counting ACL rule matches performed in hardware. If you do not specify this keyword, rule matches for the ACL are not counted in hardware.

Usage guidelines

For information about configuring Ethernet service instances, see MPLS L2VPN or VPLS in MPLS Configuration Guide or see VXLAN Configuration Guide.

If you use the acl-number argument to specify an ACL, follow these guidelines:

· To specify an IPv4 ACL, use the acl-number argument directly.

· To specify an IPv6 ACL, specify the ipv6 keyword, and then the acl-number argument.

· To specify a Layer 2 ACL or user-defined ACL, the mac or user-defined keyword is not a must. You can either specify the mac or user-defined keyword and then the acl-number argument or specify only the acl-number argument.

If you use the name acl-name option to specify an ACL, follow these guidelines:

· To specify an IPv4 ACL, use the name acl-name option.

· To specify an IPv6, Layer 2, or user-defined ACL, specify the related keyword and then the name acl-name option.

The hardware-count keyword in this command enables match counting in hardware for all rules in an ACL, and the counting keyword in the rule command enables match counting specific to rules.

To disable ACL rule match counting in hardware when resources are insufficient, you must execute the undo packet-filter command, and then reconfigure the packet-filter command without specifying the hardware-count keyword.

To disable ACL rule match counting in hardware when resources are sufficient, you can directly reconfigure the packet-filter command without specifying the hardware-count keyword.

Examples

# Apply IPv4 advanced ACL 3001 to filter incoming traffic on Ethernet service instance 1 of Ten-GigabitEthernet 1/0/1, and enable counting ACL rule matches performed in hardware.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 1/0/1

[Sysname-Ten-GigabitEthernet1/0/1] service-instance 200

[Sysname-Ten-GigabitEthernet1/0/1-srv200] packet-filter 3001 inbound hardware-count

Related commands

display packet-filter

display packet-filter statistics

display packet-filter verbose

packet-filter (interface view)

Use packet-filter to apply an ACL to an interface to filter packets.

Use undo packet-filter to remove an ACL from an interface.

Syntax

packet-filter [ ipv6 | mac | user-defined ] { acl-number | name acl-name } { inbound | outbound } [ hardware-count ] [ share-mode ]

undo packet-filter [ ipv6 | mac | user-defined ] { acl-number | name acl-name } { inbound | outbound }

Default

No ACL is applied to an interface to filter packets.

Views

Layer 2 Ethernet interface view

Layer 2 aggregate interface view

Layer 3 Ethernet interface view

Layer 3 Ethernet subinterface view

Layer 3 aggregate interface view

VLAN interface view

VSI interface view

Predefined user roles

network-admin

Parameters

ipv6: Specifies the IPv6 ACL type.

mac: Specifies the Layer 2 ACL type.

user-defined: Specifies the user-defined ACL type.

acl-number: Specifies an ACL by its number. The following are available value ranges:

· 2000 to 2999 for basic ACLs.

· 3000 to 3999 for advanced ACLs.

· 4000 to 4999 for Layer 2 ACLs.

name acl-name: Specifies an ACL by its name. The acl-name argument is a case-insensitive string of 1 to 63 characters.

inbound: Filters incoming packets.

outbound: Filters outgoing packets.

hardware-count: Enables counting ACL rule matches performed in hardware. If you do not specify this keyword, rule matches for the ACL are not counted in hardware.

share-mode: Applies the ACL in sharing mode to a Layer 2 Ethernet interface, Layer 3 Ethernet interface, or VSI interface. In this mode, all interfaces on the same card or device with the same ACL applied in the one direction share one QoS and ACL resource.

Usage guidelines

If you use the acl-number argument to specify an ACL, follow these guidelines:

· To specify an IPv4 ACL, use the acl-number argument directly.

· To specify an IPv6 ACL, specify the ipv6 keyword, and then the acl-number argument.

If you use the name acl-name option to specify an ACL, follow these guidelines:

· To specify an IPv4 ACL, use the name acl-name option.

· To specify an IPv6, Layer 2, or user-defined ACL, specify the related keyword and then the name acl-name option.

The hardware-count keyword in this command enables match counting in hardware for all rules in an ACL, and the counting keyword in the rule command enables match counting specific to rules.

To disable ACL rule match counting in hardware when resources are insufficient, you must execute the undo packet-filter command and then reconfigure the packet-filter command without specifying the hardware-count keyword.

To disable ACL rule match counting in hardware when resources are sufficient, you can directly reconfigure the packet-filter command without specifying the hardware-count keyword.

To the same direction of an interface, you can apply a maximum of four ACLs: one IPv4 ACL, one IPv6 ACL, one Layer 2 ACL, and one user-defined ACL.

You can use the packet-filter command in VLAN interface view or the packet-filter vlan-interface command in system view to configure packet filtering in one direction of a VLAN interface. You cannot configure both of them in one direction of a VLAN interface.

Examples

# Apply IPv4 basic ACL 2001 to filter incoming traffic on Ten-GigabitEthernet 1/0/1, and enable counting ACL rule matches performed in hardware.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 1/0/1

[Sysname-Ten-GigabitEthernet1/0/1] packet-filter 2001 inbound hardware-count

Related commands

display packet-filter

display packet-filter statistics

display packet-filter verbose

packet-filter default deny

Use packet-filter default deny to set the packet filtering default action to deny. The packet filter denies packets that do not match any ACL rule.

Use undo packet-filter default deny to restore the default.

Syntax

packet-filter default deny

undo packet-filter default deny

Default

The packet filtering default action is permit. The packet filter permits packets that do not match any ACL rule.

Views

System view

Predefined user roles

network-admin

Usage guidelines

The packet filter applies the default action to all ACL applications for packet filtering. The default action appears in the display command output for packet filtering.

Examples

# Set the packet filter default action to deny.

<Sysname> system-view

[Sysname] packet-filter default deny

Related commands

display packet-filter

display packet-filter statistics

display packet-filter verbose

packet-filter default hardware-count

Use packet-filter default hardware-count to enable hardware-count for the packet filtering default action.

Use undo packet-filter default hardware-count to disable hardware-count for the packet filtering default action.

‌

NOTE:

Only the S6820 switch series supports this command.

‌

Syntax

packet-filter default { inbound | outbound } hardware-count

undo packet-filter default { inbound | outbound } hardware-count

Default

Hardware-count is disabled for the packet filtering default action.

Views

Ethernet service instance view

Layer 2 Ethernet interface view

Layer 2 aggregate interface view

Layer 3 Ethernet interface view

Layer 3 Ethernet subinterface view

Layer 3 aggregate interface view

VLAN interface view

VSI interface view

Predefined user roles

network-admin

Parameters

inbound: Specifies the incoming packets.

outbound: Specifies the outgoing packets. This keyword is not supported for Layer 2 aggregate interfaces, Layer 3 aggregate interfaces, or VSI interfaces.

Usage guidelines

To enable hardware-count for the packet filtering default action on an interface, make sure you have applied ACLs to the interface for packet filtering.

Examples

# Set the packet filtering default action to deny. Apply IPv4 basic ACL 2001 to Ten-GigabitEthernet 1/0/1 for filtering incoming packets, and enable hardware-count for the packet filtering default action on Ten-GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] packet-filter default deny

[Sysname] interface ten-gigabitethernet 1/0/1

[Sysname-Ten-GigabitEthernet1/0/1] packet-filter 2001 inbound

[Sysname-Ten-GigabitEthernet1/0/1] packet-filter default inbound hardware-count

Related commands

packet-filter

packet-filter default deny

display packet-filter

display packet-filter statistics

packet-filter filter

Use packet-filter filter to specify the applicable scope of packet filtering on a VLAN interface.

Use undo packet-filter filter to restore the default.

Syntax

packet-filter filter [ route | all ]

undo packet-filter filter

Default

The packet filtering filters packets forwarded at Layer 3.

Views

VLAN interface view

Predefined user roles

network-admin

Parameters

route: Filters packets forwarded at Layer 3 by the VLAN interface.

all: Filters all packets, including packets forwarded at Layer 3 by the VLAN interface and packets forwarded at Layer 2 by the physical ports associated with the VLAN interface.

Examples

# Configure the packet filtering on VLAN-interface 2 to filter packets forwarded at Layer 3.

<Sysname> system-view

[Sysname] interface vlan-interface 2

[Sysname-Vlan-interface2] packet-filter filter route

packet-filter vlan-interface

Use packet-filter vlan-interface to apply an ACL to a list of VLAN interfaces to filter packets.

Use undo packet-filter vlan-interface to remove an ACL from a list of VLAN interfaces.

Syntax

packet-filter [ ipv6 | mac | user-defined ] { acl-number | name acl-name } vlan-interface vlan-interface-list { inbound | outbound } [ hardware-count ]

undo packet-filter [ ipv6 | mac | user-defined ] { acl-number | name acl-name } vlan-interface vlan-interface-list { inbound | outbound }

Default

No ACL is applied to a list of VLAN interfaces to filter packets.

Views

System view

Predefined user roles

network-admin

Parameters

ipv6: Specifies the IPv6 ACL type.

mac: Specifies the Layer 2 ACL type.

user-defined: Specifies the user-defined ACL type.

acl-number: Specifies an ACL by its number. The following are available value ranges:

· 2000 to 2999 for basic ACLs.

· 3000 to 3999 for advanced ACLs.

· 4000 to 4999 for Layer 2 ACLs.

· 5000 to 5999 for user-defined ACLs.

name acl-name: Specifies an ACL by its name. The acl-name argument is a case-insensitive string of 1 to 63 characters.

vlan-interface vlan-interface-list: Specifies a space-separated list of up to eight VLAN interface items. Each item specifies a VLAN interface or a range of VLAN interfaces in the form of start-vlan-interface to end-vlan-interface.

inbound: Filters incoming packets.

outbound: Filters outgoing packets.

hardware-count: Enables counting ACL rule matches performed in hardware. If you do not specify this keyword, rule matches for the ACL are not counted in hardware.

Usage guidelines

If you use the acl-number argument to specify an ACL, follow these guidelines:

· To specify an IPv4 ACL, use the acl-number argument directly.

· To specify an IPv6 ACL, specify the ipv6 keyword, and then the acl-number argument.

If you use the name acl-name option to specify an ACL, follow these guidelines:

· To specify an IPv4 ACL, use the name acl-name option.

· To specify an IPv6, Layer 2, or user-defined ACL, specify the related keyword and then the name acl-name option.

You can use the packet-filter command in VLAN interface view or use the packet-filter vlan-interface command in system view to configure packet filtering in one direction of a VLAN interface. You cannot configure both of them in the same direction of a VLAN interface.

The hardware-count keyword in this command enables match counting in hardware for all rules in an ACL, and the counting keyword in the rule command enables match counting specific to rules.

With the packet-filter vlan-interface command, you can configure only two filters: one for each direction. You can repeat the command to add VLAN interfaces to the packet filter in each direction. As a best practice to save resources, use the packet-filter vlan-interface command to configure packet filtering for VLAN interfaces that share the same packet filtering ACL.

For a packet filter, the use of the hardware-count keyword must be consistent across all its VLAN interfaces. You must specify the hardware-count keyword for all its VLAN interfaces or none of its VLAN interfaces.

A list of VLAN interfaces can contain up to eight VLAN interface items. Each item has at least one VLAN interface. Follow these restrictions and guidelines when you use the undo packet-filter vlan-interface command:

· You can specify the entire VLAN interface list to remove the ACL from all VLAN interfaces in the list.

· You can specify one or more VLAN interface items of the list to remove the ACL from the specified VLAN interfaces.

· For a VLAN interface item with multiple VLAN interfaces, you cannot remove the ACL from only some of the VLAN interfaces of the VLAN interface item.

To disable ACL rule match counting in hardware when resources are sufficient, you can directly reconfigure the packet-filter command without specifying the hardware-count keyword.

Examples

# Apply IPv4 basic ACL 2003 to filter incoming traffic on VLAN interfaces 3 through 10, and enable counting ACL rule matches performed in hardware.

<Sysname> system-view

[Sysname] packet-filter 2003 vlan-interface 3 to 10 inbound hardware-count

Related commands

display packet-filter

display packet-filter statistics

display packet-filter verbose

reset acl counter

Use reset acl counter to clear statistics for ACLs.

Syntax

reset acl [ ipv6 | mac | user-defined ] counter { acl-number | all | name acl-name }

Views

User view

Predefined user roles

network-admin

Parameters

ipv6: Specifies the IPv6 ACL type.

mac: Specifies the Layer 2 ACL type.

user-defined: Specifies the user-defined ACL type.

acl-number: Specifies an ACL by its number. The following are available value ranges:

· 2000 to 2999 for basic ACLs.

· 3000 to 3999 for advanced ACLs.

· 4000 to 4999 for Layer 2 ACLs.

· 5000 to 5999 for user-defined ACLs.

all: Clears statistics for all ACLs of the specified type.

name acl-name: Clears statistics of an ACL specified by its name. The acl-name argument is a case-insensitive string of 1 to 63 characters.

Usage guidelines

When specifying an ACL by its number, follow these rules:

· To specify an IPv6 ACL, you must specify both its ACL number and the ipv6 keyword.

· To specify a Layer 2 ACL, you can specify its ACL number without the mac keyword.

· To specify a user-defined ACL, you can specify its ACL number without the user-defined keyword.

To specify an IPv6 ACL, Layer 2 ACL, or user-defined ACL by a name, you must specify both the ACL name and the ipv6, mac, or user-defined keyword.

Examples

# Clear statistics for IPv4 basic ACL 2001.

<Sysname> reset acl counter 2001

Related commands

display acl

reset packet-filter statistics

Use reset packet-filter statistics to clear the packet filtering statistics.

Syntax

reset packet-filter statistics { { interface [ interface-type interface-number ] | l2vpn-ac [ interface interface-type interface-number service-instance instance-id ] | vlan-interface } { inbound | outbound } [ default | [ ipv6 | mac | user-defined ] { acl-number | name acl-name } ] }

Views

User view

Predefined user roles

network-admin

Parameters

interface [ interface-type interface-number ]: Specifies an interface by its type and number. If you do not specify an interface, this command clears packet filtering statistics for all interfaces.

l2vpn-ac [ interface interface-type interface-number service-instance instance-id ]: Specifies an Ethernet service instance on an interface. The interface-type interface-number argument represents the interface type and number. The instance-id argument represents the ID of the Ethernet service instance, in the range of 1 to 4096. If you do not specify an Ethernet service instance, this command clears packet filtering statistics for all Ethernet service instances.

vlan-interface: Specifies the list of VLAN interfaces specified in the packet-filter vlan-interface command.

inbound: Specifies the inbound direction.

outbound: Specifies the outbound direction.

default: Clears the default action statistics for packet filtering.

‌

NOTE:

Only the S6820 switch series supports the default keyword.

‌

ipv6: Specifies the IPv6 ACL type.

mac: Specifies the Layer 2 ACL type.

user-defined: Specifies the user-defined ACL type.

acl-number: Specifies an ACL by its number. The following are available value ranges:

· 2000 to 2999 for basic ACLs.

· 3000 to 3999 for advanced ACLs.

· 4000 to 4999 for Layer 2 ACLs.

· 5000 to 5999 for user-defined ACLs.

name acl-name: Specifies an ACL by its name. The acl-name argument is a case-insensitive string of 1 to 63 characters.

Usage guidelines

If default, acl-number, name acl-name, ipv6, mac, or user-defined is not specified, this command clears the packet filtering statistics for all ACLs.

To specify the IPv4 ACL type, do not specify the ipv6, mac, or user-defined keyword.

Examples

# Clear IPv4 basic ACL 2001 statistics for inbound packet filtering on Ten-GigabitEthernet 1/0/1.

<Sysname> reset packet-filter statistics interface ten-gigabitethernet 1/0/1 inbound 2001

# Clear IPv4 basic ACL 2001 statistics for inbound packet filtering on the list of VLAN interfaces.

<Sysname> reset packet-filter statistics vlan-interface inbound 2001

# Clear IPv4 basic ACL 2001 statistics for inbound packet filtering on Ethernet service instance 1 of Ten-GigabitEthernet 1/0/1.

<Sysname> reset packet-filter statistics interface ten-gigabitethernet 1/0/1 service-instance 1 inbound 2001

Related commands

display packet-filter statistics

display packet-filter statistics sum

rule (IPv4 advanced ACL view)

Use rule to create or edit an IPv4 advanced ACL rule.

Use undo rule to delete an entire IPv4 advanced ACL rule or some attributes in the rule.

Syntax

rule [ rule-id ] { deny | permit } protocol [ { { ack ack-value | fin fin-value | psh psh-value | rst rst-value | syn syn-value | urg urg-value } * | established } | counting | destination { dest-address dest-wildcard | any } | destination-port operator port1 [ port2 ] | { dscp dscp | { precedence precedence | tos tos } * } | fragment | icmp-type { icmp-type [ icmp-code ] | icmp-message } | logging | qos-local-id local-id-value | source { source-address source-wildcard | any } | source-port operator port1 [ port2 ] | time-range time-range-name | vpn-instance vpn-instance-name ] *

rule [ rule-id ] { deny | permit } vxlan [ destination { dest-address dest-wildcard | any } | source { source-address source-wildcard | any } | source-port operator port1 [ port2 ] | vxlan-id vxlan-id ] * inner-protocol inner-protocol [ counting | inner-destination { dest-address dest-wildcard | any } | inner-destination-port operator port1 [ port2 ] | inner-established | inner-source { source-address source-wildcard | any } | inner-source-port operator port1 [ port2 ] | [ logging ] | time-range time-range-name ] *

undo rule rule-id [ { { ack | fin | psh | rst | syn | urg } * | established } | counting | destination | destination-port | { dscp | { precedence | tos } * | fragment | icmp-type | inner-destination | inner-destination-port | inner-established | inner-source | inner-source-port | logging | qos-local-id | source | source-port | time-range | vpn-instance | vxlan-id ] *

undo rule { deny | permit } protocol [ { { ack ack-value | fin fin-value | psh psh-value | rst rst-value | syn syn-value | urg urg-value } * | established } | counting | destination { dest-address dest-wildcard | any } | destination-port operator port1 [ port2 ] | { dscp dscp | { precedence precedence | tos tos } * | fragment | icmp-type { icmp-type [ icmp-code ] | icmp-message } | logging | qos-local-id | source { source-address source-wildcard | any } | source-port operator port1 [ port2 ] | time-range time-range-name | vpn-instance vpn-instance-name ] *

undo rule { deny | permit } vxlan [ destination { dest-address dest-wildcard | any } | source { source-address source-wildcard | any } | source-port operator port1 [ port2 ] | vxlan-id vxlan-id ] * inner-protocol inner-protocol [ counting | inner-destination { dest-address dest-wildcard | any } | inner-destination-port operator port1 [ port2 ] | inner-established | inner-source { source-address source-wildcard | any } | inner-source-port operator port1 [ port2 ] | [ logging ] | time-range time-range-name ] *

Default

No IPv4 advanced ACL rules exist.

Views

IPv4 advanced ACL view

Predefined user roles

network-admin

Parameters

rule-id: Specifies a rule ID in the range of 0 to 65534. If you do not specify a rule ID when creating an ACL rule, the system automatically assigns it a rule ID. This rule ID is the nearest higher multiple of the numbering step to the current highest rule ID, starting from the start rule ID. For example, if the rule numbering step is 5 and the current highest rule ID is 28, the rule is numbered 30.

deny: Denies matching packets.

permit: Allows matching packets to pass.

protocol: Specifies a protocol carried over IPv4 by its number in the range of 0 to 255 or by its keyword, as shown in Table 7.

Table 7 Protocols carried over IPv4

Number	Keyword	Description
N/A	ip	Matches IPv4 packets.
1	icmp	Matches ICMP packets.
2	igmp	Matches IGMP packets.
4	ipinip	Matches IP-in-IP packets.
6	tcp	Matches TCP packets.
17	udp	Matches UDP packets.
47	gre	Matches GRE packets. For information about GRE, see Layer 3—IP Services Configuration Guide.
89	ospf	Matches OSPF packets.

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Table 8 describes the parameters that you can specify, regardless of the value for the protocol argument.

Table 8 Match criteria and other rule information for IPv4 advanced ACL rules

Parameters	Function	Description
source { source-address source-wildcard \| any }	Specifies a source address.	The source-address source-wildcard arguments specify a source IP address and a wildcard mask in dotted decimal notation. An all-zero wildcard represents a host address. The any keyword specifies any source IP address.
destination { dest-address dest-wildcard \| any }	Specifies a destination address.	The dest-address dest-wildcard arguments specify a destination IP address and a wildcard mask in dotted decimal notation. An all-zero wildcard mask represents a host address. The any keyword represents any destination IP address.
counting	Enables rule match counting in software.	The counting keyword enables match counting specific to rules, and the hardware-count keyword in the packet-filter command enables match counting in hardware for all rules in an ACL. If the counting keyword is not specified, matches for the rule are not counted in software.
precedence precedence	Specifies an IP precedence value.	The precedence argument can be a number in the range of 0 to 7, or in words: routine (0), priority (1), immediate (2), flash (3), flash-override (4), critical (5), internet (6), or network (7).
tos tos	Specifies a ToS preference.	The tos argument can be a number in the range of 0 to 15, or in words: max-reliability (2), max-throughput (4), min-delay (8), min-monetary-cost (1), or normal (0).
dscp dscp	Specifies a DSCP priority.	The dscp argument can be a number in the range of 0 to 63, or in words: af11 (10), af12 (12), af13 (14), af21 (18), af22 (20), af23 (22), af31 (26), af32 (28), af33 (30), af41 (34), af42 (36), af43 (38), cs1 (8), cs2 (16), cs3 (24), cs4 (32), cs5 (40), cs6 (48), cs7 (56), default (0), or ef (46).
fragment	Applies the rule only to fragments.	If you do not specify this keyword, the rule applies to all fragments and non-fragments.
logging	Logs the number of matching packets.	This feature requires that the module (for example, packet filtering) that uses the ACL supports logging.
time-range time-range-name	Specifies a time range for the rule.	The time-range-name argument is a case-insensitive string of 1 to 32 characters. It must start with an English letter. If the time range is not configured, the system creates the rule. However, the rule using the time range can take effect only after you configure the time range. For more information about time range, see ACL and QoS Configuration Guide.
qos-local-id local-id-value	Specifies a local QoS ID.	The value range for the local-id-value argument is 1 to 4095. By default, no local QoS ID is specified. If the ACL is used for traffic classification in a QoS policy, follow these restrictions and guidelines: · The supported value range for the local-id-value argument is 1 to 3999 if the QoS policy is applied to the inbound direction. · The supported value range for the local-id-value argument is 1 to 511 if the QoS policy is applied to the outbound direction. · In an IRF fabric, you cannot match the packets on a member device by using the local QoS ID marked on another member device. · In a VXLAN network, you cannot match the packets by using the local QoS ID marked on the remote VTEP or VXLAN IP gateway.
vpn-instance vpn-instance-name	Applies the rule to an MPLS L3VPN instance.	The vpn-instance-name argument is a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, the rule applies to both non-VPN packets and VPN packets.

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If the protocol argument is tcp (6) or udp (17), set the parameters shown in Table 9.

Table 9 TCP/UDP-specific parameters for IPv4 advanced ACL rules

Parameters	Function	Description
source-port operator port1 [ port2 ]	Specifies one or more UDP or TCP source ports.	The operator argument can be lt (lower than), gt (greater than), eq (equal to), neq (not equal to), or range (inclusive range). The port1 and port2 arguments are TCP or UDP port numbers in the range of 0 to 65535. The port2 argument is needed only when the operator argument is range. TCP port numbers can be represented as: chargen (19), bgp (179), cmd (514), daytime (13), discard (9), dns (53), domain (53), echo (7), exec (512), finger (79), ftp (21), ftp-data (20), gopher (70), hostname (101), irc (194), klogin (543), kshell (544), login (513), lpd (515), nntp (119), pop2 (109), pop3 (110), smtp (25), sunrpc (111), tacacs (49), talk (517), telnet (23), time (37), uucp (540), whois (43), and www (80). UDP port numbers can be represented as: biff (512), bootpc (68), bootps (67), discard (9), dns (53), dnsix (90), echo (7), mobilip-ag (434), mobilip-mn (435), nameserver (42), netbios-dgm (138), netbios-ns (137), netbios-ssn (139), ntp (123), rip (520), snmp (161), snmptrap (162), sunrpc (111), syslog (514), tacacs-ds (65), talk (517), tftp (69), time (37), who (513), and xdmcp (177).
destination-port operator port1 [ port2 ]	Specifies one or more UDP or TCP destination ports.
{ ack ack-value \| fin fin-value \| psh psh-value \| rst rst-value \| syn syn-value \| urg urg-value } *	Specifies one or more TCP flags including ACK, FIN, PSH, RST, SYN, and URG.	Parameters specific to TCP. The value for each argument can be 0 (flag bit not set) or 1 (flag bit set). The TCP flags in a rule are ANDed. For example, a rule configured with ack 0 psh 1 matches packets that have the ACK flag bit not set and the PSH flag bit set.
established	Specifies the flags for indicating the established status of a TCP connection.	Parameter specific to TCP. The rule matches TCP connection packets with the ACK or RST flag bit set.

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If the protocol argument is icmp (1), set the parameters shown in Table 10.

Table 10 ICMP-specific parameters for IPv4 advanced ACL rules

Parameters

Function

Description

icmp-type { icmp-type icmp-code | icmp-message }

Specifies the ICMP message type and code.

The icmp-type argument is in the range of 0 to 255.

The icmp-code argument is in the range of 0 to 255.

The icmp-message argument specifies a message name. Supported ICMP message names and their corresponding type and code values are listed in Table 11.

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Table 11 ICMP message names supported in IPv4 advanced ACL rules

ICMP message name	ICMP message type	ICMP message code
echo	8	0
echo-reply	0	0
fragmentneed-DFset	3	4
host-redirect	5	1
host-tos-redirect	5	3
host-unreachable	3	1
information-reply	16	0
information-request	15	0
net-redirect	5	0
net-tos-redirect	5	2
net-unreachable	3	0
parameter-problem	12	0
port-unreachable	3	3
protocol-unreachable	3	2
reassembly-timeout	11	1
source-quench	4	0
source-route-failed	3	5
timestamp-reply	14	0
timestamp-request	13	0
ttl-exceeded	11	0

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vxlan: Specifies VXLAN encapsulation. You can specify a VXLAN ID only after you specify this keyword.

vxlan-id vxlan-id: Specifies a VXLAN ID in the range of 0 to 16777215.

inner-protocol inner-protocol: Specifies an inner protocol type by its number in the range of 0 to 255 or by its name: gre (47), icmp (1), igmp (2), ip, ipinip (4), ospf (89), tcp (6), or udp (17). The ip keyword specifies all inner protocols. Table 12 describes the parameters that you can specify, regardless of the value for the inner-protocol argument.

Table 12 Match criteria and other rule information for IPv4 advanced ACL rules

Parameters	Function	Description
inner-established	Specifies the inner flags for indicating the established status of a TCP connection.	Parameter specific to the inner TCP protocol. The rule matches TCP connection packets with the ACK or RST flag bit set.
inner-source { source-address source-wildcard \| any }	Specifies inner source IPv4 addresses.	The source-address source-wildcard arguments represent an inner source IPv4 address and an inner wildcard mask in dotted decimal notation. An all-zero wildcard mask specifies a host address. The any keyword specifies any inner source IPv4 addresses.
inner-destination { dest-address dest-wildcard \| any }	Specifies inner destination IPv4 addresses.	The dest-address dest-wildcard arguments represent an inner destination IPv4 address and an inner wildcard mask in dotted decimal notation. An all-zero wildcard mask specifies a host address. The any keyword represents any inner destination IPv4 addresses.

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If the inner-protocol argument is tcp (6) or udp (17), set the parameters shown in Table 13.

Table 13 TCP/UDP-specific parameters for IPv4 advanced ACL rules

Parameters	Function	Description
inner-source-port operator port1 [ port2 ]	Specifies inner UDP or TCP source ports.	The operator argument can be lt (lower than), gt (greater than), eq (equal to), neq (not equal to), or range (inclusive range). The port1 and port2 arguments are TCP or UDP port numbers in the range of 0 to 65535. The port2 argument is needed only when the operator argument is range. TCP port numbers can be represented as: chargen (19), bgp (179), cmd (514), daytime (13), discard (9), dns (53), domain (53), echo (7), exec (512), finger (79), ftp (21), ftp-data (20), gopher (70), hostname (101), irc (194), klogin (543), kshell (544), login (513), lpd (515), nntp (119), pop2 (109), pop3 (110), smtp (25), sunrpc (111), tacacs (49), talk (517), telnet (23), time (37), uucp (540), whois (43), and www (80). UDP port numbers can be represented as: biff (512), bootpc (68), bootps (67), discard (9), dns (53), dnsix (90), echo (7), mobilip-ag (434), mobilip-mn (435), nameserver (42), netbios-dgm (138), netbios-ns (137), netbios-ssn (139), ntp (123), rip (520), snmp (161), snmptrap (162), sunrpc (111), syslog (514), tacacs-ds (65), talk (517), tftp (69), time (37), who (513), and xdmcp (177). The TCP port domain is saved as dns in the configuration file.
inner-destination-port operator port1 [ port2 ]	Specifies inner UDP or TCP destination ports.

Parameters

Function

Description

inner-source-port operator port1 [ port2 ]

Specifies inner UDP or TCP source ports.

The operator argument can be lt (lower than), gt (greater than), eq (equal to), neq (not equal to), or range (inclusive range).

The port1 and port2 arguments are TCP or UDP port numbers in the range of 0 to 65535. The port2 argument is needed only when the operator argument is range.

TCP port numbers can be represented as: chargen (19), bgp (179), cmd (514), daytime (13), discard (9), dns (53), domain (53), echo (7), exec (512), finger (79), ftp (21), ftp-data (20), gopher (70), hostname (101), irc (194), klogin (543), kshell (544), login (513), lpd (515), nntp (119), pop2 (109), pop3 (110), smtp (25), sunrpc (111), tacacs (49), talk (517), telnet (23), time (37), uucp (540), whois (43), and www (80).

UDP port numbers can be represented as: biff (512), bootpc (68), bootps (67), discard (9), dns (53), dnsix (90), echo (7), mobilip-ag (434), mobilip-mn (435), nameserver (42), netbios-dgm (138), netbios-ns (137), netbios-ssn (139), ntp (123), rip (520), snmp (161), snmptrap (162), sunrpc (111), syslog (514), tacacs-ds (65), talk (517), tftp (69), time (37), who (513), and xdmcp (177).

The TCP port domain is saved as dns in the configuration file.

inner-destination-port operator port1 [ port2 ]

Specifies inner UDP or TCP destination ports.

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Usage guidelines

If an IPv4 advanced ACL is used for outbound QoS traffic classification or outbound packet filtering, do not specify neq for the operator argument.

Within an ACL, the permit or deny statement of each rule must be unique. If the rule you are creating or editing has the same deny or permit statement as another rule in the ACL, the rule will not be created or changed.

You can edit ACL rules only when the match order is config.

To view the existing IPv4 basic and advanced ACL rules, use the display acl all command.

The undo rule rule-id command without any optional parameters deletes an entire rule. If you specify optional parameters, the undo rule rule-id command deletes the specified attributes for the rule.

The undo rule { deny | permit } command can only be used to delete an entire rule. You must specify all the attributes of the rule for the command.

Examples

# Create an IPv4 advanced ACL rule to permit TCP packets with the destination port 80 from 129.9.0.0/16 to 202.38.160.0/24.

<Sysname> system-view

[Sysname] acl advanced 3000

[Sysname-acl-ipv4-adv-3000] rule permit tcp source 129.9.0.0 0.0.255.255 destination 202.38.160.0 0.0.0.255 destination-port eq 80

# Create IPv4 advanced ACL rules to permit all IP packets but the ICMP packets destined for 192.168.1.0/24.

<Sysname> system-view

[Sysname] acl advanced 3001

[Sysname-acl-ipv4-adv-3001] rule deny icmp destination 192.168.1.0 0.0.0.255

[Sysname-acl-ipv4-adv-3001] rule permit ip

# Create IPv4 advanced ACL rules to permit inbound and outbound FTP packets.

<Sysname> system-view

[Sysname] acl advanced 3002

[Sysname-acl-ipv4-adv-3002] rule permit tcp source-port eq ftp

[Sysname-acl-ipv4-adv-3002] rule permit tcp source-port eq ftp-data

[Sysname-acl-ipv4-adv-3002] rule permit tcp destination-port eq ftp

[Sysname-acl-ipv4-adv-3002] rule permit tcp destination-port eq ftp-data

# Create IPv4 advanced ACL rules to permit inbound and outbound SNMP and SNMP trap packets.

<Sysname> system-view

[Sysname] acl advanced 3003

[Sysname-acl-ipv4-adv-3003] rule permit udp source-port eq snmp

[Sysname-acl-ipv4-adv-3003] rule permit udp source-port eq snmptrap

[Sysname-acl-ipv4-adv-3003] rule permit udp destination-port eq snmp

[Sysname-acl-ipv4-adv-3003] rule permit udp destination-port eq snmptrap

# Create an IPv4 advanced ACL rule to permit VXLAN packets whose inner source IP address is in subnet 192.168.1.0/24.

<Sysname> system-view

[Sysname] acl advanced 3004

[Sysname-acl-ipv4-adv-3004] rule permit vxlan inner-protocol ip inner-source 192.168.1.0 0.0.0.255

# Create an IPv4 advanced ACL rule to permit GRE packets with the GRE key as FFFF.

<Sysname> system-view

[Sysname] acl advanced 3004

[Sysname-acl-ipv4-adv-3004] rule permit gre gre-key ffff

# Create an IPv4 advanced ACL rule to permit IP packets with the OPTIONS field.

<Sysname> system-view

[Sysname] acl advanced 3004

[Sysname-acl-ipv4-adv-3004] rule permit ip options

# Create an IPv4 advanced ACL rule to permit first fragments of IP packets.

<Sysname> system-view

[Sysname] acl advanced 3004

[Sysname-acl-ipv4-adv-3004] rule permit ip first-fragment

# Create an IPv4 advanced ACL rule to permit non-fragments.

<Sysname> system-view

[Sysname] acl advanced 3004

[Sysname-acl-ipv4-adv-3004] rule permit ip non-fragment

# Create an IPv4 advanced ACL rule to permit non-fragments and first fragments of IP packets.

<Sysname> system-view

[Sysname] acl advanced 3004

[Sysname-acl-ipv4-adv-3004] rule permit ip non-or-first-fragment

# Create an IPv4 advanced ACL rule to permit all fragments of IP packets.

<Sysname> system-view

[Sysname] acl advanced 3004

[Sysname-acl-ipv4-adv-3004] rule permit ip any-fragment

Related commands

acl

acl logging interval

display acl

step

time-range

rule (IPv4 basic ACL view)

Use rule to create or edit an IPv4 basic ACL rule.

Use undo rule to delete an entire IPv4 basic ACL rule or some attributes in the rule.

Syntax

rule [ rule-id ] { deny | permit } [ counting | fragment | logging | source { source-address source-wildcard | any } | time-range time-range-name | vpn-instance vpn-instance-name ] *

undo rule { deny | permit } [ counting | fragment | logging | source { source-address source-wildcard | any } | time-range time-range-name | vpn-instance vpn-instance-name ] *

Default

No IPv4 basic ACL rules exist.

Views

IPv4 basic ACL view

Predefined user roles

network-admin

Parameters

deny: Denies matching packets.

permit: Allows matching packets to pass.

counting: Enables rule match counting in software. If you do not specify this keyword, matches for the rule are not counted in software.

fragment: Applies the rule only to non-first fragments. If you do not specify this keyword, the rule applies to both fragments and non-fragments.

logging: Logs the number of matching packets. This feature is available only when the application module (for example, packet filtering) that uses the ACL supports the logging feature.

source { source-address source-wildcard | any }: Matches a source address. The source-address and source-wildcard arguments specify a source IP address and a wildcard mask in dotted decimal notation. A wildcard mask of zeros represents a host address. The any keyword represents any source IP address.

time-range time-range-name: Specifies a time range for the rule. The time-range-name argument is a case-insensitive string of 1 to 32 characters. It must start with an English letter. If the time range is not configured, the system creates the rule. However, the rule using the time range can take effect only after you configure the time range. For more information about time range, see ACL and QoS Configuration Guide.

vpn-instance vpn-instance-name: Applies the rule to an MPLS L3VPN instance. The vpn-instance-name argument is a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, the rule applies to both non-VPN packets and VPN packets..

Usage guidelines

You can edit ACL rules only when the match order is config.

The counting keyword in this command enables match counting specific to rules, and the hardware-count keyword in the packet-filter command enables match counting in hardware for all rules in an ACL.

To view the existing IPv4 basic and advanced ACL rules, use the display acl all command.

The undo rule rule-id command without any optional parameters deletes an entire rule. If you specify optional parameters, the undo rule rule-id command deletes the specified attributes for the rule.

The undo rule { deny | permit } command can only be used to delete an entire rule. You must specify all the attributes of the rule for the command.

Examples

# Create a rule in IPv4 basic ACL 2000 to deny the packets from any source IP subnet but 10.0.0.0/8, 172.17.0.0/16, or 192.168.1.0/24.

<Sysname> system-view

[Sysname] acl basic 2000

[Sysname-acl-ipv4-basic-2000] rule permit source 10.0.0.0 0.255.255.255

[Sysname-acl-ipv4-basic-2000] rule permit source 172.17.0.0 0.0.255.255

[Sysname-acl-ipv4-basic-2000] rule permit source 192.168.1.0 0.0.0.255

[Sysname-acl-ipv4-basic-2000] rule deny source any

Related commands

acl

acl logging interval

display acl

step

time-range

rule (IPv6 advanced ACL view)

Use rule to create or edit an IPv6 advanced ACL rule.

Use undo rule to delete an entire IPv6 advanced ACL rule or some attributes in the rule.

Syntax

rule [ rule-id ] { deny | permit } protocol [ { { ack ack-value | fin fin-value | psh psh-value | rst rst-value | syn syn-value | urg urg-value } * | established } | counting | destination { dest-address dest-prefix | dest-address/dest-prefix | any } | destination-port operator port1 [ port2 ] | dscp dscp | flow-label flow-label-value | fragment | icmp6-type { icmp6-type icmp6-code | icmp6-message } | logging | qos-local-id local-id-value | routing [ type routing-type ] | hop-by-hop [ type hop-type ] | source { source-address source-prefix | source-address/source-prefix | any } | source-port operator port1 [ port2 ] | time-range time-range-name | vpn-instance vpn-instance-name ] *

undo rule rule-id [ { { ack | fin | psh | rst | syn | urg } * | established } | counting | destination | destination-port | dscp | flow-label | fragment | icmp6-type | logging | qos-local-id | routing | hop-by-hop | source | source-port | time-range | vpn-instance] *

undo rule { deny | permit } protocol [ { { ack ack-value | fin fin-value | psh psh-value | rst rst-value | syn syn-value | urg urg-value } * | established } | counting | destination { dest-address dest-prefix | dest-address/dest-prefix | any } | destination-port operator port1 [ port2 ] | dscp dscp | flow-label flow-label-value | fragment | icmp6-type { icmp6-type icmp6-code | icmp6-message } | logging | qos-local-id | routing [ type routing-type ] | hop-by-hop [ type hop-type ] | source { source-address source-prefix | source-address/source-prefix | any } | source-port operator port1 [ port2 ] | time-range time-range-name | vpn-instance vpn-instance-name ] *

Default

No IPv6 advanced ACL rules exist.

Views

IPv6 advanced ACL view

Predefined user roles

network-admin

Parameters

deny: Denies matching packets.

permit: Allows matching packets to pass.

protocol: Specifies a protocol carried over IPv6 by its number in the range of 0 to 255 or by its keyword, as shown in Table 14.

Table 14 Protocols carried over IPv6

Number	Keyword	Description
N/A	ipv6	Matches IPv6 packets.
1	icmpv6	Matches ICMPv6 packets.
2	igmp	Matches IGMP packets.
6	tcp	Matches TCP packets.
17	udp	Matches UDP packets.
47	gre	Matches GRE packets. For information about GRE, see Layer 3—IP Services Configuration Guide.
50	ipv6-esp	Matches IPv6-ESP packets.
51	ipv6-ah	Matches IPv6-AH packets.
89	ospf	Matches OSPF packets.

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Table 15 describes the parameters that you can specify, regardless of the value for the protocol argument.

Table 15 Match criteria and other rule information for IPv6 advanced ACL rules

Parameters	Function	Description
source { source-address source-prefix \| source-address/source-prefix \| any }	Specifies a source IPv6 address.	The source-address argument specifies an IPv6 source address. The source-prefix argument specifies a prefix length in the range of 1 to 128. The any keyword represents any IPv6 source address.
destination { dest-address dest-prefix \| dest-address/dest-prefix \| any }	Specifies a destination IPv6 address.	The dest-address argument specifies a destination IPv6 address. The dest-prefix argument specifies a prefix length in the range of 1 to 128. The any keyword represents any IPv6 destination address.
counting	Enables rule match counting in software.	The counting keyword enables match counting specific to rules, and the hardware-count keyword in the packet-filter ipv6 command enables match counting in hardware for all rules in an ACL. If the counting keyword is not specified, matches for the rule are not counted in software.
dscp dscp	Specifies a DSCP preference.	The dscp argument can be a number in the range of 0 to 63, or in words, af11 (10), af12 (12), af13 (14), af21 (18), af22 (20), af23 (22), af31 (26), af32 (28), af33 (30), af41 (34), af42 (36), af43 (38), cs1 (8), cs2 (16), cs3 (24), cs4 (32), cs5 (40), cs6 (48), cs7 (56), default (0), or ef (46).
flow-label flow-label-value	Specifies a flow label value in an IPv6 packet header.	The flow-label-value argument is in the range of 0 to 1048575.
fragment	Applies the rule only to fragments.	If you do not specify this keyword, the rule applies to all fragments and non-fragments.
logging	Logs the number of matching packets.	This feature requires that the module (for example, packet filtering) that uses the ACL supports logging.
routing [ type routing-type ]	Specifies an IPv6 routing header type.	routing-type: Value of the IPv6 routing header type, in the range of 0 to 255. If you specify the type routing-type option, the rule applies to the specified type of IPv6 routing header. If you do not specify the type routing-type option, the rule applies to all types of IPv6 routing headers.
hop-by-hop [ type hop-type ]	Specifies an IPv6 Hop-by-Hop Options header type.	hop-type: Value of the IPv6 Hop-by-Hop Options header type, in the range of 0 to 255. If you specify the type hop-type option, the rule applies to the specified type of IPv6 Hop-by-Hop Options header. If you do not specify the type hop-type option, the rule applies to all types of IPv6 Hop-by-Hop Options header.
time-range time-range-name	Specifies a time range for the rule.	The time-range-name argument is a case-insensitive string of 1 to 32 characters. It must start with an English letter. If the time range is not configured, the system creates the rule. However, the rule using the time range can take effect only after you configure the time range. For more information about time range, see ACL and QoS Configuration Guide.
qos-local-id local-id-value	Specifies a local QoS ID.	The value range for the local-id-value argument is 1 to 4095. By default, no local QoS ID is specified. If the ACL is used for traffic classification in a QoS policy, follow these restrictions and guidelines: · The supported value range for the local-id-value argument is 1 to 3999 if the QoS policy is applied to the inbound direction. · The supported value range for the local-id-value argument is 1 to 511 if the QoS policy is applied to the outbound direction. · In an IRF fabric, you cannot match the packets on a member device by using the local QoS ID marked on another member device. · In a VXLAN network, you cannot match the packets by using the local QoS ID marked on the remote VTEP or VXLAN IP gateway.
vpn-instance vpn-instance-name	Applies the rule to an MPLS L3VPN instance.	The vpn-instance-name argument is a case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, the rule applies to both non-VPN packets and VPN packets.

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If the protocol argument is tcp (6) or udp (17), set the parameters shown in Table 16.

Table 16 TCP/UDP-specific parameters for IPv6 advanced ACL rules

Parameters	Function	Description
source-port operator port1 [ port2 ]	Specifies one or more UDP or TCP source ports.	The operator argument can be lt (lower than), gt (greater than), eq (equal to), neq (not equal to), or range (inclusive range). The port1 and port2 arguments are TCP or UDP port numbers in the range of 0 to 65535. The port2 argument is needed only when the operator argument is range. TCP port numbers can be represented as: chargen (19), bgp (179), cmd (514), daytime (13), discard (9), dns (53), domain (53), echo (7), exec (512), finger (79), ftp (21), ftp-data (20), gopher (70), hostname (101), irc (194), klogin (543), kshell (544), login (513), lpd (515), nntp (119), pop2 (109), pop3 (110), smtp (25), sunrpc (111), tacacs (49), talk (517), telnet (23), time (37), uucp (540), whois (43), and www (80). UDP port numbers can be represented as: biff (512), bootpc (68), bootps (67), discard (9), dns (53), dnsix (90), echo (7), mobilip-ag (434), mobilip-mn (435), nameserver (42), netbios-dgm (138), netbios-ns (137), netbios-ssn (139), ntp (123), rip (520), snmp (161), snmptrap (162), sunrpc (111), syslog (514), tacacs-ds (65), talk (517), tftp (69), time (37), who (513), and xdmcp (177).
destination-port operator port1 [ port2 ]	Specifies one or more UDP or TCP destination ports.
{ ack ack-value \| fin fin-value \| psh psh-value \| rst rst-value \| syn syn-value \| urg urg-value } *	Specifies one or more TCP flags, including ACK, FIN, PSH, RST, SYN, and URG.	Parameters specific to TCP. The value for each argument can be 0 (flag bit not set) or 1 (flag bit set). The TCP flags in a rule are ANDed. For example, a rule configured with ack 0 psh 1 matches packets that have the ACK flag bit not set and the PSH flag bit set.
established	Specifies the flags for indicating the established status of a TCP connection.	Parameter specific to TCP. The rule matches TCP packets with the ACK or RST flag bit set.

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If the protocol argument is icmpv6 (58), set the parameters shown in Table 17.

Table 17 ICMPv6-specific parameters for IPv6 advanced ACL rules

Parameters

Function

Description

icmp6-type { icmp6-type icmp6-code | icmp6-message }

Specifies the ICMPv6 message type and code.

The icmp6-type argument is in the range of 0 to 255.

The icmp6-code argument is in the range of 0 to 255.

The icmp6-message argument specifies a message name. Supported ICMP message names and their corresponding type and code values are listed in Table 18.

‌

Table 18 ICMPv6 message names supported in IPv6 advanced ACL rules

ICMPv6 message name	ICMPv6 message type	ICMPv6 message code
echo-reply	129	0
echo-request	128	0
err-Header-field	4	0
frag-time-exceeded	3	1
hop-limit-exceeded	3	0
host-admin-prohib	1	1
host-unreachable	1	3
neighbor-advertisement	136	0
neighbor-solicitation	135	0
network-unreachable	1	0
packet-too-big	2	0
port-unreachable	1	4
redirect	137	0
router-advertisement	134	0
router-solicitation	133	0
unknown-ipv6-opt	4	2
unknown-next-hdr	4	1

‌

Usage guidelines

On an S6800, S6860, or S6861 switch, do not specify the flow-label keyword if an IPv6 advanced ACL is for outbound QoS traffic classification or outbound packet filtering.

On an S6800 or S6820 switch, if an IPv6 advanced ACL is for outbound QoS traffic classification or outbound packet filtering:

· Do not specify neq for the operator argument.

· Do not specify the routing, hop-by-hop, or flow-label keyword if the ACL is for outbound application.

· Do not set the protocol argument to 0, 43, 44, 51 (ipv6-ah), or 60 if the ACL is for outbound application.

You can edit ACL rules only when the match order is config.

To view the existing IPv6 basic and advanced ACL rules, use the display acl ipv6 all command.

The undo rule rule-id command without any optional parameters deletes an entire rule. If you specify optional parameters, the undo rule rule-id command deletes the specified attributes for a rule.

The undo rule { deny | permit } command can only be used to delete an entire rule. You must specify all the attributes of the rule for the command.

Examples

# Create an IPv6 advanced ACL rule to permit TCP packets with the destination port 80 from 2030:5060::/64 to FE80:5060::/96.

<Sysname> system-view

[Sysname] acl ipv6 advanced 3000

[Sysname-acl-ipv6-adv-3000] rule permit tcp source 2030:5060::/64 destination fe80:5060::/96 destination-port eq 80

# Create IPv6 advanced ACL rules to permit all IPv6 packets but the ICMPv6 packets destined for FE80:5060:1001::/48.

<Sysname> system-view

[Sysname] acl ipv6 advanced 3001

[Sysname-acl-ipv6-adv-3001] rule deny icmpv6 destination fe80:5060:1001:: 48

[Sysname-acl-ipv6-adv-3001] rule permit ipv6

# Create IPv6 advanced ACL rules to permit inbound and outbound FTP packets.

<Sysname> system-view

[Sysname] acl ipv6 advanced 3002

[Sysname-acl-ipv6-adv-3002] rule permit tcp source-port eq ftp

[Sysname-acl-ipv6-adv-3002] rule permit tcp source-port eq ftp-data

[Sysname-acl-ipv6-adv-3002] rule permit tcp destination-port eq ftp

[Sysname-acl-ipv6-adv-3002] rule permit tcp destination-port eq ftp-data

# Create IPv6 advanced ACL rules to permit inbound and outbound SNMP and SNMP trap packets.

<Sysname> system-view

[Sysname] acl ipv6 advanced 3003

[Sysname-acl-ipv6-adv-3003] rule permit udp source-port eq snmp

[Sysname-acl-ipv6-adv-3003] rule permit udp source-port eq snmptrap

[Sysname-acl-ipv6-adv-3003] rule permit udp destination-port eq snmp

[Sysname-acl-ipv6-adv-3003] rule permit udp destination-port eq snmptrap

# Create IPv6 advanced ACL 3004, and configure two rules: one permits packets with the Hop-by-Hop Options header type as 5, and the other one denies packets with other Hop-by-Hop Options header types.

<Sysname> system-view

[Sysname] acl ipv6 advanced 3004

[Sysname-acl-ipv6-adv-3004] rule permit ipv6 hop-by-hop type 5

[Sysname-acl-ipv6-adv-3004] rule deny ipv6 hop-by-hop

Related commands

acl

acl logging interval

display acl

step

time-range

rule (IPv6 basic ACL view)

Use rule to create or edit an IPv6 basic ACL rule.

Use undo rule to delete an entire IPv6 basic ACL rule or some attributes in the rule.

Syntax

rule [ rule-id ] { deny | permit } [ counting | fragment | logging | routing [ type routing-type ] | source { source-address source-prefix | source-address/source-prefix | any } | time-range time-range-name | vpn-instance vpn-instance-name ] *

undo rule { deny | permit } [ counting | fragment | logging | routing [ type routing-type ] | source { source-address source-prefix | source-address/source-prefix | any } | time-range time-range-name | vpn-instance vpn-instance-name ] *

Default

No IPv6 basic ACL rules exist.

Views

IPv6 basic ACL view

Predefined user roles

network-admin

Parameters

deny: Denies matching packets.

permit: Allows matching packets to pass.

counting: Enables rule match counting in software. If you do not specify this keyword, matches for the rule are not counted in software.

fragment: Applies the rule only to non-first fragments. If you do not specify this keyword, the rule applies to both fragments and non-fragments.

logging: Logs the number of matching packets. This feature is available only when the application module (for example, packet filtering) that uses the ACL supports the logging feature.

routing [ type routing-type ]: Applies the rule to the specified type of IPv6 routing header or all types of IPv6 routing headers. The routing-type argument specifies the value of the IPv6 routing header type, in the range of 0 to 255. If you do not specify the type routing-type option, the rule applies to all types of IPv6 routing headers.

source { source-address source-prefix | source-address/source-prefix | any }: Matches a source IPv6 address. The source-address argument specifies a source IPv6 address. The source-prefix argument specifies an address prefix length in the range of 1 to 128. The any keyword represents any IPv6 source address.

Usage guidelines

On an S6800 or S6820 switch, if an IPv6 basic ACL is used for outbound QoS traffic classification or outbound packet filtering, do not specify the routing keyword.

You can edit ACL rules only when the match order is config.

The counting keyword in this command enables match counting specific to rules, and the hardware-count keyword in the packet-filter ipv6 command enables match counting in hardware for all rules in an ACL.

To view the existing IPv6 basic and advanced ACL rules, use the display acl ipv6 all command.

The undo rule rule-id command without any optional parameters deletes an entire rule. If you specify optional parameters, the undo rule rule-id command deletes the specified attributes for a rule.

The undo rule { deny | permit } command can only be used to delete an entire rule. You must specify all the attributes of the rule for the command.

Examples

# Create an IPv6 basic ACL rule to deny the packets from any source IP subnet but 1001::/16, 3124:1123::/32, or FE80:5060:1001::/48.

<Sysname> system-view

[Sysname] acl ipv6 basic 2000

[Sysname-acl-ipv6-basic-2000] rule permit source 1001:: 16

[Sysname-acl-ipv6-basic-2000] rule permit source 3124:1123:: 32

[Sysname-acl-ipv6-basic-2000] rule permit source fe80:5060:1001:: 48

[Sysname-acl-ipv6-basic-2000] rule deny source any

Related commands

acl

acl logging interval

display acl

step

time-range

rule (Layer 2 ACL view)

Use rule to create or edit a Layer 2 ACL rule.

Use undo rule to delete an entire Layer 2 ACL rule or some attributes in the rule.

Syntax

rule [ rule-id ] { deny | permit } [ cos dot1p | counting | dest-mac dest-address dest-mask | { lsap lsap-type lsap-type-mask | type protocol-type protocol-type-mask } | source-mac source-address source-mask | time-range time-range-name ] *

rule [ rule-id ] { deny | permit } vxlan [ counting | dest-mac dest-address dest-mask | inner-dest-mac inner-dest-address inner-dest-mask | inner-source-mac inner-source-address inner-source-mask | inner-type inner-protocol-type inner-protocol-type-mask | source-mac source-address source-mask | time-range time-range-name | type protocol-type protocol-type-mask | vxlan-id vxlan-id ] *

undo rule rule-id [ counting | time-range ] *

undo rule { deny | permit } [ cos dot1p | counting | dest-mac dest-address dest-mask | { lsap lsap-type lsap-type-mask | type protocol-type protocol-type-mask } | source-mac source-address source-mask | time-range time-range-name ] *

undo rule { deny | permit } vxlan [ counting | dest-mac dest-address dest-mask | inner-dest-mac inner-dest-address inner-dest-mask | inner-source-mac inner-source-address inner-source-mask | inner-type inner-protocol-type inner-protocol-type-mask | source-mac source-address source-mask | time-range time-range-name | type protocol-type protocol-type-mask | vxlan-id vxlan-id ] *

Default

No Layer 2 ACL rules exist.

Views

Layer 2 ACL view

Predefined user roles

network-admin

Parameters

deny: Denies matching packets.

permit: Allows matching packets to pass.

cos dot1p: Matches an 802.1p priority. The 802.1p priority can be specified by one of the following values:

· A priority number in the range of 0 to 7.

· A priority name: best-effort (0), background (1), spare (2), excellent-effort (3), controlled-load (4), video (5), voice (6), or network-management (7).

counting: Enables rule match counting in software. If you do not specify this keyword, matches for the rule are not counted in software.

dest-mac dest-address dest-mask: Matches a destination MAC address range. The dest-address and dest-mask arguments represent a destination MAC address and mask in the H-H-H format.

lsap lsap-type lsap-type-mask: Matches the DSAP and SSAP fields in LLC encapsulation. The lsap-type argument is a hexadecimal number that represents the encapsulation format. The value range for the lsap-type argument is 0 to ffff. The lsap-type-mask argument is a hexadecimal number that represents the LSAP mask. The value range for the lsap-type-mask argument is 0 to ffff.

type protocol-type protocol-type-mask: Matches one or more protocols in the Layer 2. The protocol-type argument is a hexadecimal number that represents a protocol type in Ethernet_II and Ethernet_SNAP frames. The value range for the protocol-type argument is 0 to ffff. The protocol-type-mask argument is a hexadecimal number that represents a protocol type mask. The value range for the protocol-type-mask argument is 0 to ffff.

source-mac source-address source-mask: Matches a source MAC address range. The source-address argument represents a source MAC address, and the sour-mask argument represents a mask in the H-H-H format.

vxlan: Specifies VXLAN encapsulation.

vxlan-id vxlan-id: Specifies a VXLAN ID in the range of 0 to 16777215.

inner-type inner-protocol-type inner-protocol-type-mask: Matches inner link layer protocols. The inner-protocol-type argument is a 16-bit hexadecimal number that represents a protocol type in inner Ethernet_II and Ethernet_SNAP frames. The protocol-type-mask argument is a 16-bit hexadecimal number that represents a protocol type mask.

inner-source-mac inner-source-address inner-source-mask: Matches an inner source MAC address range. The inner-source-address argument represents an inner source MAC address in the H-H-H format and the inner-source-mask argument represents a mask in the H-H-H format.

inner-dest-mac inner-dest-address inner-dest-mask: Matches an inner destination MAC address range. The inner-dest-address and inner-dest-mask arguments represent an inner destination MAC address and a mask in the H-H-H format.

Usage guidelines

You can edit ACL rules only when the match order is config.

The counting keyword in this command enables match counting specific to rules, and the hardware-count keyword in the packet-filter command enables match counting in hardware for all rules in an ACL.

To view the existing Layer 2 ACL rules, use the display acl mac all command.

The undo rule rule-id command without any optional parameters deletes an entire rule. If you specify optional parameters, the undo rule rule-id command deletes the specified attributes for the rule.

The undo rule { deny | permit } command can only be used to delete an entire rule. You must specify all the attributes of the rule for the command.

Examples

# Create a rule in Layer 2 ACL 4000 to permit ARP packets and deny RARP packets.

<Sysname> system-view

[Sysname] acl mac 4000

[Sysname-acl-mac-4000] rule permit type 0806 ffff

[Sysname-acl-mac-4000] rule deny type 8035 ffff

# Create a rule in Layer 2 ACL 4001 to permit VXLAN packets whose VXLAN ID is 300.

<Sysname> system-view

[Sysname] acl mac 4001

[Sysname-acl-mac-4001] rule permit vxlan vxlan-id 300

Related commands

acl

display acl

step

time-range

rule (user-defined ACL view)

Use rule to create or edit a user-defined ACL rule.

Use undo rule to delete a user-defined ACL rule.

Syntax

rule [ rule-id ] { deny | permit } [ { { l2 | l4 }rule-string rule-mask offset }&<1-8> ] [ counting | time-range time-range-name ] *

undo rule rule-id

undo rule { deny | permit } [ { { l2 | l4 } rule-string rule-mask offset }&<1-8> ] [ counting | time-range time-range-name ] *

Default

No user-defined ACL rules exist.

Views

User-defined ACL view

Predefined user roles

network-admin

Parameters

rule-id: Specifies a rule ID in the range of 0 to 65534. If you do not specify a rule ID when creating an ACL rule, the system automatically assigns it a rule ID. This rule ID is the nearest higher multiple of the numbering step to the current highest rule ID, starting from 0. The numbering step for user-defined ACLs is fixed at 5. For example, if the rule numbering step is 5 and the current highest rule ID is 28, the rule is numbered 30.

deny: Denies matching packets.

permit: Allows matching packets to pass.

l2: Specifies that the offset is relative to the beginning of the Layer 2 frame header.

l4: Specifies that the offset is relative to the beginning of the Layer 4 header.

rule-string: Defines a match pattern in hexadecimal format. Its length must be a multiple of two.

rule-mask: Defines a match pattern mask in hexadecimal format. Its length must be the same as that of the match pattern. A match pattern mask is used for ANDing the selected string of a packet.

offset: Specifies an offset in bytes after which the match operation begins.

&<1-8>: Specifies that up to eight match patterns can be defined in the ACL rule.

counting: Enables rule match counting in software. If you do not specify this keyword, matches for the rule are not counted in software.

Usage guidelines

Both the undo rule rule-id command and the undo rule { deny | permit } command can delete an entire rule. When you use the undo rule { deny | permit } command, you must specify all the attributes of the rule. The undo rule { deny | permit } command is used to delete rules without rule IDs created by scripts.

The counting keyword in this command enables match counting specific to rules, and the hardware-count keyword in the packet-filter command enables match counting in hardware for all rules in an ACL.

To view the existing user-defined ACL rules, use the display acl user-defined all command.

Examples

# Create a rule for user-defined ACL 5006 to permit ARP packets where the 12th and 13th bytes starting from the Layer 2 header are 0x0806.

<Sysname> system-view

[Sysname] acl user-defined 5006

[Sysname-acl-user-5006] rule permit l2 0806 ffff 12

Related commands

acl

display acl

time-range

rule comment

Use rule comment to configure a comment for an ACL rule.

Use undo rule comment to delete an ACL rule comment.

Syntax

rule rule-id comment text

undo rule rule-id comment

Default

A rule does not have a comment.

Views

IPv4 basic/advanced ACL view

IPv6 basic/advanced ACL view

Layer 2 ACL view

User-defined ACL view

Predefined user roles

network-admin

Parameters

rule-id: Specifies an ACL rule ID in the range of 0 to 65534. The ACL rule must already exist.

text: Specifies a comment about the ACL rule, a case-sensitive string of 1 to 127 characters.

Usage guidelines

This command adds a comment to a rule if the rule does not have a comment. It modifies the comment for a rule if the rule already has a comment.

Examples

# Create a rule for IPv4 basic ACL 2000, and add a comment about the rule.

<Sysname> system-view

[Sysname] acl basic 2000

[Sysname-acl-ipv4-basic-2000] rule 0 deny source 1.1.1.1 0

[Sysname-acl-ipv4-basic-2000] rule 0 comment This rule is used on ten-gigabitethernet 1/0/1.

Related commands

display acl

step

Use step to set a rule numbering step for an ACL.

Use undo step to restore the default.

Syntax

step step-value [ start start-value ]

undo step

Default

The rule numbering step is 5, and the start rule ID is 0.

Views

IPv4 basic/advanced ACL view

IPv6 basic/advanced ACL view

Layer 2 ACL view

User-defined ACL view

Predefined user roles

network-admin

Parameters

step-value: Specifies the ACL rule numbering step in the range of 1 to 20.

start start-value: Specifies the start rule ID in the range of 0 to 20.

Usage guidelines

The rule numbering step sets the increment by which the system numbers rules automatically. If you do not specify a rule ID when creating an ACL rule, the system automatically assigns it a rule ID. This rule ID is the nearest higher multiple of the numbering step to the current highest rule ID, starting from the start rule ID. For example, if the rule numbering step is 5 and the current highest rule ID is 12, the rule is numbered 15.

The wider the numbering step, the more rules you can insert between two rules. Whenever the step or start rule ID changes, the rules are renumbered, starting from the start rule ID. For example, if there are five rules numbered 0, 5, 9, 10, and 15, changing the step from 5 to 2 causes the rules to be renumbered 0, 2, 4, 6, and 8.

Examples

# Set the rule numbering step to 2 for IPv4 basic ACL 2000.

<Sysname> system-view

[Sysname] acl basic 2000

[Sysname-acl-ipv4-basic-2000] step 2

Related commands

display acl

08-ACL and QoS Command Reference

ACL commands

acl logging interval

packet-filter (interface view)

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