ratio: Maximum ratio of the received broadcast traffic to the total bandwidth on an Ethernet port. The value ranges from 1 to 100 (in step of 1) and defaults to 100. The smaller the ratio is, the less broadcast traffic is allowed.

max-pps: Maximum number of broadcast packets allowed to be received per second on an Ethernet port (in pps).

In system view, the max-pps argument is in the range of 1 to 262,143.

In Ethernet port view, the max-pps argument is in the range of 1 to 148,810.

Description

Use the broadcast-suppression command to limit broadcast traffic allowed to be received on each port (in system view) or on a specified port (in Ethernet port view).

Use the undo broadcast-suppression command to restore the default broadcast suppression setting.

The broadcast-suppression command is used to enable broadcast suppression. By default, broadcast suppression is disabled.

When incoming broadcast traffic exceeds the broadcast traffic threshold you set, the system drops the packets exceeding the threshold to reduce the broadcast traffic ratio to the reasonable range, so as to keep normal network service.

You can use the undo broadcast-suppression command in system view to cancel the broadcast suppression settings on all ports, or use the broadcast-suppression command in system view to make a global setting.

Executing the commands in Ethernet port view only takes effect on the current port.

& Note:

The global broadcast suppression setting configured by the broadcast-suppression command in system view takes effect on all Ethernet ports in the system except for the reflection ports, stack ports and ports having their own broadcast suppression settings.

If you configure broadcast-suppression command in both system view and Ethernet port view, the configuration in Ethernet port view will take effect.

Example

# Allow incoming broadcast traffic on the Ethernet1/0/1 port to occupy at most 20% of the bandwidth on the port.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] broadcast-suppression 20

# Set the maximum number of broadcast packets that can be received per second by the Ethernet1/0/1 port to 1000.

[H3C-Ethernet1/0/1] broadcast-suppression pps 1000

1.1.2 copy configuration

Syntax

copy configuration source { interface-type interface-number | aggregation-group source-agg-id } destination { interface-list [ aggregation-group destination-agg-id ] | aggregation-group destination-agg-id }

View

System view

Parameter

interface-type: Port type.

interface-number: Port number.

source-agg-id: Source aggregation group number, in the range of 1 to 416. The port with the smallest port number in the aggregation group is used as the source port.

destination-agg-id: Destination aggregation group number, in the range of 1 to 416.

interface-list: Destination port list, interface-list =interface-type interface-number [ to interface-type interface-number ] &<1-10. &<1-10> means that you can input up to 10 ports/port ranges.

Description

Use the copy configuration command to copy the configuration on a port to some other ports to keep consistent configuration on them.

& Note:

l If you specify a source aggregation group ID, the system uses the port with the smallest port number in the aggregation group as the source.

l If you specify a destination aggregation group ID, the configuration of the source port will be copied to all ports in the aggregation group and all ports in the group will have the same configuration as that of the source port.

The configuration that can be copied includes: VLAN configuration, protocol-based VLAN configuration, LACP configuration, QoS configuration, GARP configuration, STP configuration and initial port configuration.

VALN configuration: includes IDs of the VLANs allowed on the port and the default VLAN ID of the port;

Protocol-based VLAN configuration: includes IDs and indexes of the protocol-based VLANs allowed on the port;

Link aggregation control protocol (LACP) configuration: includes LACP enable/disable status;

& Note:

The copy command can only be used to copy the configuration of LACP’s enable state, but not to copy the configuration of aggregation group, i.e., you can not add a port to the aggregation group bye the command.

QoS configuration: includes rate limit, port priority, and default 802.1p priority on the port;

STP configuration: includes STP enable/disable status on the port, link attribute on the port (point-to-point or non-point-to-point), STP priority, path cost, packet transmission rate limit, whether loop protection is enabled, whether root protection is enabled, and whether the port is an edge port;

Generic attribute registration protocol (GARP) configuration: includes GVRP enable/disable status, timer settings, and registration mode;

Port configuration: includes link type of the port, port rate and duplex mode.

Example

# Copy the configuration of Ethernet1/0/1 to Ethernet1/0/2 and Ethernet1/0/3.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] copy configuration source ethernet 1/0/1 destination ethernet 1/0/2 ethernet 1/0/3

Note: The following will be removed from destination port list:

Aggregation port(s),Voice vlan port(s).

Copying VLAN configuration...

Copying Protocol based VLAN configuration...

Copying LACP configuration...

Copying QOS configuration...

Copying GARP configuration...

Copying STP configuration...

Copying speed/duplex configuration...

& Note:

l Any aggregation group port you input in the destination port list will be removed from the list and the copy command will not take effect on the port. If you want an aggregation group port to have the same configuration with the source port, you can specify the aggregation group of the port as the destination (with the destination-agg-id argument).

l Any voice-VLAN-enabled port you input in the destination port list will be removed from the list.

1.1.3 description

Syntax

description text

undo description

View

Ethernet port view

Parameter

text: Port description, a string of 1 to 80 characters.

Description

Use the description command to set a port description string.

Use the undo description command to remove the port description string.

By default, no description is defined for a port.

Example

# Set description string "lanswitch-interface" for the Ethernet1/0/1 port.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet1/0/1

[H3C-Ethernet1/0/1] description lanswitch-interface

1.1.4 display brief interface

Syntax

display brief interface [ interface-type interface-number ] [ | { begin | include | exclude } string ]

View

Any view

Parameter

interface-type: Port type.

interface-number: Port number.

|: Specifies to use a regular expression to describe the configuration information entries to be displayed.

begin: Each entry must begin with a specified character string.

include: Each entry must include a specified character string.

exclude: Each entry must not include a specified character string.

string: Regular expression, a character string of 1 to 256 characters.

& Note:

For details about regular expression, refer to the “Configuration File Management” module in this manual.

Description

Use the display brief interface command to display the brief configuration information about one or all interfaces, including: interface type, link state, link rate, duplex attribute, link type, default VLAN ID and description string.

This command is similar to the display interface command, but the information it displays is briefer.

& Note:

Currently, for the port types other than Ethernet port, this command only displays the link state, and shows "--" in all other configuration information fields.

Related command: display interface.

Example

# Display the brief configuration information about the Ethernet1/0/1 port.

<H3C> display brief interface Ethernet1/0/1

Interface:

Eth - Ethernet GE - GigabitEthernet TENGE - tenGigabitEthernet

Loop - LoopBack Vlan - Vlan-interface Cas - Cascade

Speed/Duplex:

A - auto-negotiation

Interface Link Speed Duplex Type PVID Description

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

Eth1/0/1 DOWN A A hybrid 1 home

Table 1-1 Description on the fields of the display brief interface command

Field	Description
Interface	Port type
Link	Link state: UP or DOWN
Speed	Link rate
Duplex	Duplex attribute
Type	Link type: access, hybrid or trunk
PVID	Default VLAN ID
Description	Port description string

1.1.5 display interface

Syntax

display interface [ interface-type | interface-type interface-number ]

View

Any view

Parameter

interface-type: Port type.

interface-number: Port number.

For details about the arguments, refer to the parameter description of the interface command.

Description

Use the display interface command to display port configuration.

When using this command:

If you specify neither port type nor port number, the command displays information about all ports.

If you specify only port type, the command displays information about all ports of the specified type.

If you specify both port type and port number, the command displays information about the specified port.

Example

# Display the configuration information of the Ethernet1/0/1 port.

<H3C> display interface ethernet1/0/1

Ethernet1/0/1 current state : DOWN

IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 0012-a990-2240

Media type is twisted pair, loopback not set

Port hardware type is 100_BASE_TX

100Mbps-speed mode, full-duplex mode

Link speed type is force link, link duplex type is force link

Flow-control is enabled

The Maximum Frame Length is 9216

Broadcast MAX-pps: 500

Unicast MAX-ratio: 100%

Multicast MAX-ratio: 100%

Allow jumbo frame to pass

PVID: 1

Mdi type: auto

Port link-type: access

Tagged VLAN ID : none

Untagged VLAN ID : 1

Last 300 seconds input: 0 packets/sec 0 bytes/sec

Last 300 seconds output: 0 packets/sec 0 bytes/sec

Input(total): 0 packets, 0 bytes

0 broadcasts, 0 multicasts, - pauses

Input(normal): - packets, - bytes

- broadcasts, - multicasts, - pauses

Input: 0 input errors, 0 runts, 0 giants, - throttles, 0 CRC

0 frame, - overruns, 0 aborts, 0 ignored, - parity errors

Output(total): 0 packets, 0 bytes

0 broadcasts, 0 multicasts, 0 pauses

Output(normal): - packets, - bytes

- broadcasts, - multicasts, - pauses

Output: 0 output errors, - underruns, - buffer failures

0 aborts, 0 deferred, 0 collisions, 0 late collisions

0 lost carrier, - no carrier

Table 1-2 Description on the fields of the display interface command

Field	Description
Ethernet1/0/1 current state	Current Ethernet port status: up or down
IP Sending Frames' Format	Ethernet frame format
Hardware address	Port hardware address
Media type	Media type
Port hardware type	Port hardware type
100Mbps-speed mode, full-duplex mode	Current speed mode and duplex mode
Link speed type is force link, link duplex type is force link	Link speed and duplex status ( force or auto-negotiation)
Flow-control is enabled	Status of flow-control on the port
The Maximum Frame Length	Maximum frame length allowed on the port
Broadcast MAX-ratio	Broadcast suppression ratio on the port
Unicast MAX-ratio	Unknown unicast suppression ratio on the port
Multicast MAX-ratio	Multicast suppression ratio on the port
Allow jumbo frame to pass	Whether Jumbo frame is allowed on the port.
PVID	Default VLAN ID of the port
Mdi type	Network cable type
Port link-type	Port link type
Tagged VLAN ID	Identify the VLANs whose packets will be forwarded with tags on the port.
Untagged VLAN ID	Identify the VLANs whose packets will be forwarded without tags on the port.
Last 300 seconds input: 0 packets/sec 0 bytes/sec Last 300 seconds output: 0 packets/sec 0 bytes/sec	Rate and number of incoming and outgoing packets in the last 300 seconds
Input(total): 0 packets, 0 bytes 0 broadcasts, 0 multicasts, - pauses Input(normal): - packets, - bytes - broadcasts, - multicasts, - pauses Input: 0 input errors, 0 runts, 0 giants, - throttles, 0 CRC 0 frame, - overruns, 0 aborts, 0 ignored, - parity errors Output(total): 0 packets, 0 bytes 0 broadcasts, 0 multicasts, 0 pauses Output(normal): - packets, - bytes - broadcasts, - multicasts, - pauses Output: 0 output errors, - underruns, - buffer failures 0 aborts, 0 deferred, 0 collisions, 0 late collisions 0 lost carrier, - no carrier	Statistics on the incoming and outgoing packets and errors on the port The “-” indicates that the statistical item is not supported.

1.1.6 display loopback-detection

Syntax

display loopback-detection

View

Any view

Parameter

None

Description

Use the display loopback-detection command to display the loopback detection status on the port. If loopback detection is enabled, this information will also be displayed: time interval for loopback detection and the loopback ports.

Example

# Display the loopback detection status on the port.

<H3C> display loopback-detection

Port Ethernet1/0/1 loopback-detection is running

system Loopback-detection is running

Detection interval time is 30 seconds

There is no port existing loopback link

Table 1-3 Description on the fields of the display loopback-detection command

Field	Description
Port Ethernet1/0/1 loopback-detection is running	Loopback detection is enabled on the Ethernet1/0/1.
system Loopback-detection is running	Loopback detection is enabled globally.
Detection interval time is 30 seconds	Time interval for loopback detection is 30 seconds.
There is no port existing loopback link	No loopback port exists.

1.1.7 display transceiver-information interface

Syntax

display transceiver-information interface interface-type interface-number

View

Any view

Parameter

interface-type: Port type

interface-number: Port number

Description

Use the display port display transceiver-information interface command to display information about a specified optical port.

This command will display the following information about an optical port:

l Hardware type

l Interface type

l Wavelength

l Vendor name

l Serial number

l Transfer distance

l Current receive state: no signal or signal detected, “-“ means not supported by the current device

Example

# Display the information about the optical interface GigabitEthernet1/1/1.

<H3C> display transceiver-information interface GigabitEthernet 1/1/1

Hardware Type : -

Interface Type : SFP

Wave Length(nm) : -

Vendor Name : 3Com

Serial Number : L1RP3N0067090

3C Number :

Transfer Distance(m)

9um Fiber : 0

50um Fiber : 550

62.5um Fiber : 270

Copper Line : 0

1.1.8 display port

Syntax

display port { hybrid | trunk }

View

Any view

Parameter

hybrid: Displays hybrid ports.

trunk: Displays trunk ports.

Description

Use the display port command to check whether there are hybrid or trunk ports in the current system and display such ports (if available).

Example

# Display the hybrid ports in the current system.

<H3C> display port hybrid

The following hybrid ports exist:

Ethernet1/0/1 Ethernet1/0/2

The above information shows the current system has two hybrid ports: Ethernet1/0/1 and Ethernet1/0/2.

1.1.9 display unit

Syntax

display unit unit-id interface

View

Any view

Parameter

unit-id: Unit ID, in the range of 1 to 8.

Description

Use the display unit command to display information about the ports on a specified unit.

Example

# Display information about the ports on unit 1.

<H3C> display unit 1 interface

Aux1/0/0

Description : Aux Interface

Ethernet1/0/1 current state : DOWN

IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 0012-a990-2240

Media type is twisted pair, loopback not set

Port hardware type is 100_BASE_TX

100Mbps-speed mode, full-duplex mode

Link speed type is force link, link duplex type is force link

Flow-control is enabled

The Maximum Frame Length is 9216

Broadcast MAX-pps: 500

Unicast MAX-ratio: 100%

Multicast MAX-ratio: 100%

Allow jumbo frame to pass

PVID: 1

Mdi type: auto

Port link-type: access

Tagged VLAN ID : none

Untagged VLAN ID : 1

Last 300 seconds input: 0 packets/sec 0 bytes/sec

Last 300 seconds output: 0 packets/sec 0 bytes/sec

Input(total): 0 packets, 0 bytes

0 broadcasts, 0 multicasts, - pauses

Input(normal): - packets, - bytes

- broadcasts, - multicasts, - pauses

Input: 0 input errors, 0 runts, 0 giants, - throttles, 0 CRC

0 frame, - overruns, 0 aborts, 0 ignored, - parity errors

Output(total): 0 packets, 0 bytes

0 broadcasts, 0 multicasts, 0 pauses

Output(normal): - packets, - bytes

- broadcasts, - multicasts, - pauses

Output: 0 output errors, - underruns, - buffer failures

0 aborts, 0 deferred, 0 collisions, 0 late collisions

0 lost carrier, - no carrier

(The following displayed information is omitted)

Table 1-4 Description on the fields of the display unit command

Field	Description
Aux1/0/0 Description : Aux Interface	The description string of the AUX port is "Aux Interface".

Field

Description

Aux1/0/0

Description : Aux Interface

The description string of the AUX port is "Aux Interface".

For the description of other fields, refer to Table 1-2.

1.1.10 Duplex

Syntax

Duplex { auto | full | half }

Undo duplex

View

Ethernet port view

Parameter

Auto: Sets the port to auto-negotiation mode.

Full: Sets the port to full duplex mode.

Half: Sets the port to half duplex mode.

Description

Use the duplex command to set the duplex mode of the current port.

Use the undo duplex command to restore the default duplex mode, that is, auto-negotiation.

By default, the port is in auto-negotiation mode.

Related command: speed.

Example

# Set the Ethernet1/0/1 port to auto-negotiation mode.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface Ethernet 1/0/1

[H3C-Ethernet1/0/1] duplex auto

1.1.11 flow-control

Syntax

flow-control

undo flow-control

View

Ethernet port view

Parameter

None

Description

Use the flow-control command to enable flow control on the current Ethernet port.

Use the undo flow-control command to disable flow control on the port.

Suppose flow control is enabled on both the local and peer switches. When congestion occurs on the local switch,

the local switch sends a message to notify the peer switch of stopping sending packets to itself or reducing the sending rate temporarily,

the peer switch will stop sending packets to the local switch or reduce the sending rate temporarily when it receives the message; and vice versa. By this way, packet loss is avoided and the network service operates normally.

By default, flow control is disabled on a port.

Example

# Enable flow control on the Ethernet1/0/1 port.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] flow-control

[H3C-Ethernet1/0/1]

1.1.12 flow interval

Syntax

flow-interval interval

undo flow-interval

View

Ethernet port view

Parameter

Interval: Interval (in seconds) to perform statistics on port information. This argument ranges from 5 to 300 (in step of 5) and is 300 by default.

Description

Use the flow-interval command to set the interval to perform statistics on port information.

Use the undo flow-interval command to restore the default interval.

By default, this interval is 300 seconds.

When you use the display interface interface-type interface-number command to display the information of a port, the system performs statistical analysis on the traffic flow passing through the port during the specified interval and displays the average rates in the interval. For example, if you set the interval to 100 seconds, the displayed information is as follows:

Last 100 seconds input: 0 packets/sec 0 bytes/sec

Last 100 seconds output: 0 packets/sec 0 bytes/sec

Related command: display interface.

Example

# Set the interval to perform statistics on the Ethernet1/0/1 port to 100 seconds.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] flow-interval 100

1.1.13 giant-frame statistics enable

Syntax

giant-frame statistics enable

undo giant-frame statistics enable

View

System view

Parameter

None

Description

Use the giant-frame statistics enable command to enable the giant-frame statistics function.

Use the undo giant-frame statistics enable command to disable the giant-frame statistics function.

By default, the giant-frame statistics function is not enabled.

Example

# Enable the giant-frame statistics function.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] giant-frame statistics enable

1.1.14 interface

Syntax

interface interface-type interface-number

View

System view

Parameter

interface-type: Port type, which can be Aux, Ethernet, GigabitEthernet, LoopBack, NULL or Vlan-interface.

interface-number: Port number, in the format of Unit ID/slot number/port number, where:

Unit ID is in the range of 1 to 8;

The slot number is 0 if the port is an Ethernet port, the slot number is 1 if the port is a GigabitEthernet port.

The port number is relevant to the device.

Description

Use the interface command to enter Ethernet port view. To configure parameters for a port, you must enter the port view first.

Example

# Enter Ethernet1/0/1 port view.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface Ethernet 1/0/1

[H3C-Ethernet1/0/1]

1.1.15 jumboframe enable

Syntax

jumboframe enable

undo jumboframe enable

View

Ethernet port view

Parameter

None

Description

Use the jumboframe enable command to allow jumbo frames that are not larger than 9216 bytes to pass through the current Ethernet port.

Use the undo jumboframe enable command to allow frames that are not larger than 1536 bytes to pass through the current Ethernet port.

By default, frames that are not larger than 9216 bytes are allowed to pass through the Ethernet port.

Example

# Allow frames that are not larger than 9216 bytes to pass through Ethernet1/0/1.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] jumboframe enable

1.1.16 loopback

Syntax

loopback { external | internal }

View

Ethernet port view

Parameter

external: Performs external loop test. In the external loop test, self-loop headers must be used on the port of the switch ( for 100M port, the self-loop headers are made from four cores of the 8-core cables, for 1000M port, the self-loop header are made from eight cores of the 8-core cables, then the packets forwarded by the port will be received by itself.). The external loop test can locate the hardware failures on the port.

internal: Performs internal loop test. In the internal loop test, self loop is established in the switching chip to locate the chip failure which is related to the port.

Description

Use the loopback command to perform a loopback test on the current Ethernet port to check whether the Ethernet port works normally. The loopback test terminates automatically after running for a specific period.

By default, no loopback test is performed on the Ethernet port.

Example

# Perform an internal loop test on Ethernet1/0/1.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] loopback internal

Loopback internal succeeded.

[H3C-Ethernet1/0/1]

1.1.17 loopback-detection control enable

Syntax

loopback-detection control enable

undo loopback-detection control enable

View

Ethernet port view

Parameter

None

Description

Use the loopback-detection control enable command to enable the loopback detection control feature on the current trunk or hybrid port.

Use the undo loopback-detection control enable command to disable the loopback detection control feature on the trunk or hybrid port.

After loopback detection is enabled by using the loopback-detection enable command, the loopback-detection control enable command can be used to control the working status of the trunk port or hybrid port where loopback is found in a VLAN.

If this feature is enabled on a trunk or hybrid port, when loopback is found on the port, the system sets the port to a controlled working state and removes the MAC address entries corresponding to the port.

If this feature is disabled on a trunk or hybrid port, when loopback is found on the port, the system just reports a Trap message, and the port still works normally.

By default, the loopback detection control feature is disabled on the trunk or hybrid port.

Note that this command is invalid for an access port.

Related command: loopback-detection enable.

Example

# Enable the loopback detection control feature on Ethernet1/0/1.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] port link-type trunk

[H3C-Ethernet1/0/1] loopback-detection control enable

[H3C-Ethernet1/0/1]

1.1.18 loopback-detection enable

Syntax

loopback-detection enable

undo loopback-detection enable

View

System view or Ethernet port view

Parameter

None

Description

Use the loopback-detection enable command to enable the loopback detection feature on ports to detect whether external loopback occurs on a port.

Use the undo loopback-detection enable command to disable the loopback detection feature on port.

If loopback is found on an access port, the switch will set the port to a controlled working state.

For a trunk or hybrid port, the loopback detection control feature can be implemented by using this command and the loopback-detection control enable command together.

The loopback detection feature takes effect on a specified port only when the loopback detection feature is enabled in both system view and the specified port view.

By default, the loopback detection feature is disabled on any port.

Related command: loopback-detection control enable.

Example

# Enable the loopback detection feature on Ethernet1/0/1.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] loopback-detection enable

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] loopback-detection enable

[H3C-Ethernet1/0/1]

1.1.19 loopback-detection interval-time

Syntax

loopback-detection interval-time time

undo loopback-detection interval-time

View

System view

Parameter

time: Time interval for loopback detection, in the range of 5 to 300 (in seconds). It is 30 seconds by default.

Description

Use the loopback-detection interval-time command to set time interval for loopback detection.

Use the undo loopback-detection interval-time command to restore the default time interval.

Example

# Set time interval for loopback detection to 10 seconds.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] loopback-detection interval-time 10

[H3C]

1.1.20 loopback-detection per-vlan enable

Syntax

loopback-detection per-vlan enable

undo loopback-detection per-vlan enable

View

Ethernet port view

Parameter

None

Description

Use the loopback-detection per-vlan enable command to configure the system to run loopback detection on all VLANs of the current trunk or hybrid port.

Use the undo loopback-detection per-vlan enable command to restore the default setting.

By default, the system runs loopback detection only on the default VLAN of the trunk or hybrid port.

Note that the command is invalid for any access port.

Example

# Configure the system to run loopback detection on all VLANs of the trunk port Ethernet1/0/1.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] port link-type trunk

[H3C-Ethernet1/0/1] loopback-detection per-vlan enable

1.1.21 mdi

Syntax

mdi { across | auto | normal }

undo mdi

View

Ethernet port view

Parameter

across: Sets the port to support MDIX.

auto: Sets the port to support auto-MDI/MDIX.

normal: Sets the port to support MDI.

Description

Use the mdi command to set port MDI attribute.

Use the undo mdi command to restore the default setting.

By default, the port MDI attribute is auto.

Example

# Set the MDI attribute of Ethernet1/0/1 to across.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface Ethernet1/0/1

[H3C-Ethernet1/0/1] mdi auto

1.1.22 multicast-suppression

Syntax

multicast-suppression { ratio | pps max-pps }

undo multicast-suppression

View

Ethernet port view

Parameter

ratio: Maximum ratio of received multicast traffic to the total bandwidth on the Ethernet port. The value ranges from 1 to 100 (in step of 1) and defaults to 100. The smaller the ratio is, the less multicast traffic is allowed to be received.

max-pps: Maximum number of multicast packets allowed to be received per second on the Ethernet port (in pps). The value ranges from 1 to 148,810.

Description

Use the multicast-suppression command to limit multicast traffic allowed to be received on the current port.

Use the undo multicast-suppression command to restore the default multicast suppression setting on the current port.

When incoming multicast traffic on the port exceeds the multicast traffic threshold you set, the system drops the packets exceeding the threshold to reduce the multicast traffic ratio to the reasonable range, so as to keep normal network service.

By default, the switch does not suppress multicast traffic.

Example

# Allow the incoming multicast traffic on the Ethernet1/0/1 port to occupy at most 20% of the bandwidth on the port.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] multicast-suppression 20

# Set the maximum number of multicast packets that can be received per second by the Ethernet1/0/1 port to 1000 pps.

[H3C-Ethernet1/0/1] multicast-suppression pps 1000

1.1.23 port access vlan

Syntax

port access vlan vlan-id

undo port access vlan

View

Ethernet port view

Parameter

vlan-id: VLAN ID defined in IEEE802.1Q, in the range of 1 to 4094.

Caution:

All access ports belong to VLAN 1, which is the default VLAN of the system, so you are not allowed to add an access port to VLAN 1 or remove an access port from VLAN 1. Otherwise, the system will prompt: “Can't delete ports from or add ports to the default VLAN!”.

Description

Use the port access vlan command to add the access port into the specified VLAN.

Use the undo port access vlan command to remove the access port from the specified VLAN.

You must specify the ID of an existing VLAN in the command.

Example

# Add Ethernet1/0/1 into VLAN 3.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] vlan 3

[H3C-vlan3] quit

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] port access vlan 3

[H3C-Ethernet1/0/1]

1.1.24 port hybrid pvid vlan

Syntax

port hybrid pvid vlan vlan-id

undo port hybrid pvid

View

Ethernet port view

Parameter

vlan-id: VLAN ID defined in IEEE802.1Q, in the range of 1 to 4094. It is 1 by default.

Description

Use the port hybrid pvid vlan command to set the default VLAN ID for the hybrid port.

Use the undo port hybrid pvid command to restore the default VLAN ID of the port.

Related command: port link-type.

Caution:

You are recommended to set the default VLAN ID of the local hybrid or trunk ports to the same value as that of the hybrid or trunk ports on the peer switch. Otherwise, packet forwarding may fail on the ports.

Example

# Set the default VLAN ID of the hybrid port Ethernet1/0/1 to 100.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet1/0/1

[H3C-Ethernet1/0/1] port link-type hybrid

[H3C-Ethernet1/0/1] port hybrid pvid vlan 100

1.1.25 port hybrid vlan

Syntax

port hybrid vlan vlan-id-list { tagged | untagged }

undo port hybrid vlan vlan-id-list

View

Ethernet port view

Parameter

vlan-id-list: VLAN range to which the hybrid port will be added. vlan-id-list = [ vlan-id1 [ to vlan-id2 ] ]&<1-10>, where, vlan-id is in the range of 1 to 4094 and can be discrete, and &<1-10> means you can input up to ten VLAN IDs/ID ranges.

tagged: Keeps VLAN tags when the packets of the specified VLANs are forwarded on this port.

untagged: Keeps no VLAN tags when the packets of the specified VLANs are forwarded on this port.

Description

Use the port hybrid vlan command to add the hybrid port into specified VLANs.

Use the undo port hybrid vlan command to remove the hybrid port from specified VLANs.

A hybrid port can belong to multiple VLANs. When you use the command several times, all VLAN specified in the commands will be allowed to pass the port.

The VLAN specified by the vlan-id argument must exist. Otherwise, this command is invalid. Related command: port link-type.

Example

# Add the hybrid port Ethernet1/0/1 to VLAN 2, VLAN 4 and VLAN 50 through VLAN 100, with tags assigned to their packets.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] vlan 2

[H3C-vlan2] quit

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] port link-type hybrid

[H3C-Ethernet1/0/1] port hybrid vlan 2 4 50 to 100 tagged

Operation complete, except these VLAN(s):

Non-existent VLAN(s)

1.1.26 port link-type

Syntax

port link-type { access | hybrid | trunk | irf-fabric }

undo port link-type

View

Ethernet port view

Parameter

access: Sets the port as an access port.

hybrid: Sets the port as a hybrid port.

trunk: Sets the port as a trunk port.

irf-fabric: Sets the port as a fabric port.

Description

Use the port link-type command to set the link type of the current Ethernet port.

Use the undo port link-type command to restore the default link type.

By default, the link type of any port is access.

Pay attention to the following:

The four types of ports can co-exist on the same Ethernet switch. However, the trunk, hybrid and fabric ports cannot be directly switched between the three types (trunk, hybrid and fabric). To set a trunk/hybrid/fabric port to another type (different from access), you must first set the port to an access port and then set the access port to the required type. For example, a trunk port cannot be set to a hybrid port directly. You must set the trunk port to an access port and then set it to a hybrid port.

If you set a fabric port to an access port after the IRF stack is formed, the stack will be split and the system will prompt “Warning! This operation maybe split the fabric.” For details about fabric port, refer to module “IRF Fabric” in this manual.

Example

# Set Ethernet1/0/1 as a trunk port.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] port link-type trunk

1.1.27 port trunk permit vlan

Syntax

port trunk permit vlan { vlan-id-list | all }

undo port trunk permit vlan { vlan-id-list | all }

View

Ethernet port view

Parameter

vlan-id-list: VLAN range to which the trunk port will be added. vlan-id-list = [ vlan-id1 [ to vlan-id2 ] ]&<1-10>, where, vlan-id is in the range of 1 to 4094 and can be discrete, and &<1-10> means you can input up to ten VLAN IDs/ID ranges.

all: Adds the trunk port into all VLANs.

Description

Use the port trunk permit vlan command to add the trunk port into the specified VLAN.

Use the undo port trunk permit vlan command to remove the hybrid port from the specified VLAN.

A trunk port can belong to multiple VLANs. When you use the command several times, all VLAN specified in the commands will be allowed to pass the port.

Related command: port link-type.

Example

# Add the trunk port Ethernet1/0/1 to VLAN 2, VLAN 4 and VLAN 50 through VLAN 100.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet1/0/1

[H3C-Ethernet1/0/1] port link-type trunk

[H3C-Ethernet1/0/1] port trunk permit vlan 2 4 50 to 100

Please wait... Done.

1.1.28 port trunk pvid vlan

Syntax

port trunk pvid vlan vlan-id

undo port trunk pvid

View

Ethernet port view

Parameter

vlan-id: VLAN ID defined in IEEE802.1Q, in the range of 1 to 4094. It is 1 by default.

Description

Use the port trunk pvid vlan command to set the default VLAN ID for the trunk port.

Use the undo port trunk pvid command to restore the default setting.

To guarantee the proper packet transmission, the default VLAN ID of the local trunk port must be identical with that of the trunk port on the peer switch connected with the local trunk port.

Related command: port link-type.

Example

# Set the default VLAN ID of the trunk port Ethernet1/0/1 to 100.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] port link-type trunk

[H3C-Ethernet1/0/1] port trunk pvid vlan 100

1.1.29 reset counters interface

Syntax

reset counters interface [ interface-type | interface-type interface-number ]

View

User view

Parameter

interface-type: Port type.

interface-number: Port number.

For details about the parameters, see the parameter description of the interface command.

Description

Use the reset counters interface command to clear the statistics of the port, preparing for a new statistics collection.

If you specify neither port type nor port number, the command clears statistics of all ports.

If specify only port type, the command clears statistics of all ports of this type.

If specify both port type and port number, the command clears statistics of the specified port.

The statistics of the 802.1x-enabled ports cannot be cleared.

Example

# Clear the statistics of Ethernet1/0/1.

<H3C> reset counters interface ethernet1/0/1

1.1.30 shutdown

Syntax

shutdown

undo shutdown

View

Ethernet port view

Parameter

None

Description

Use the shutdown command to disable an Ethernet port.

Use the undo shutdown command to enable an Ethernet port.

By default, an Ethernet port is enabled.

Example

# Enable Ethernet1/0/1.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] shutdown

[H3C-Ethernet1/0/1] undo shutdown

1.1.31 speed

Syntax

speed { 10 | 100 | 1000 | auto }

undo speed

View

Ethernet port view

Parameter

10: Specifies the port speed to 10 Mbps.

100: Specifies the port speed to 100 Mbps.

1000: Specifies the port speed to 1000 Mbps (this argument is valid for Gigabit ports only).

auto: Specifies the port speed to the auto-negotiation mode.

Description

Use the speed command to set the port speed.

Use the undo speed command to restore the port speed to the default setting.

By default, the port speed is in the auto-negotiation mode.

Note that the speed of a Gigabit port can be set to 1000 Mbps or auto-negotiation mode only.

Related command: duplex.

Example

# Set the speed of Ethernet1/0/1 to 10 Mbps.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] speed 10

1.1.32 unicast-suppression

Syntax

unicast-suppression { ratio | pps max-pps }

undo unicast-suppression

View

Ethernet port view

Parameter

ratio: Maximum ratio of received unknown unicast traffic to the total bandwidth on the Ethernet port. The value ranges from 1 to 100 (in step of 1) and defaults to 100. The smaller the ratio is, the lesser unknown unicast traffic is allowed to be received.

max-pps: Maximum number of unknown unicast packets allowed to be received per second on the Ethernet port (in pps). The value ranges from 1 to 148,810.

Description

Use the unicast-suppression command to limit the unknown unicast traffic allowed to be received on the current port.

Use the undo broadcast-suppression command to restore the default unknown unicast suppression setting on the port.

When incoming unknown unicast traffic exceeds the unknown unicast traffic threshold you set, the system drops the packets exceeding the threshold to reduce the unknown unicast traffic ratio to the reasonable range, so as to keep normal network service.

By default, the switch does not suppress unknown unicast traffic.

Example

# Allow unknown incoming unicast traffic on the Ethernet1/0/1 port to occupy at most 20% of the bandwidth on the port.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface ethernet 1/0/1

[H3C-Ethernet1/0/1] unicast-suppression 20

# Set the maximum number of unknown unicast packets that can be received per second by the Ethernet1/0/1 port to 1000 pps.

[H3C-Ethernet1/0/1] unicast-suppression pps 1000

1.1.33 virtual-cable-test

Syntax

virtual-cable-test

View

Ethernet port view

Parameter

None

Description

Use the virtual-cable-test command to enable the system to test the cable connected to a specific port and to display the results. The system can test these attributes of the cable:

Cable status, including normal, abnormal, abnormal-open, abnormal-short and failure

Cable length

& Note:

l If the cable is in normal state, the displayed length value is the total length of the cable.

l If the cable is in any other state, the displayed length value is the length from the port to the faulty point.

l Currently, the following testing functions are available on an S3600 series switch: cable status testing and Cable length testing.

Pair impedance mismatch

Pair skew

Pair swap

Pair polarity

Insertion loss

Return loss

Near-end crosstalk

By default, the system does not test the cable connected to the Ethernet port.

& Note:

The combo port does not support the virtual-cable-test command.

Example

# Enable the system to test the cable connected to Ethernet1/0/1.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface Ethernet1/0/1

[H3C-Ethernet0/1] virtual-cable-test

Cable status: abnormal(open), 7 metres

Pair Impedance mismatch: yes

Pair skew: 4294967294 ns

Pair swap: swap

Pair polarity: normal

Insertion loss: 7 db

Return loss: 7 db

Near-end crosstalk: 7 db

H3C S3600 Series Ethernet Switches Command Manual-Release 1510(V1.04)

1.1.15 jumboframe enable

1.1.23 port access vlan

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