05-Layer 3-IP Routing Command Reference

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12-Routing policy commands
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12-Routing policy commands 159.40 KB

Routing policy commands

Common routing policy commands

apply as-path

Use apply as-path to set the AS_PATH attribute for BGP routes.

Use undo apply as-path to restore the default.

Syntax

apply as-path as-number&<1-32> [ replace ]

undo apply as-path

Default

No AS_PATH attribute is set.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

as-number&<1-32>: Specifies an AS by its number in the range of 1 to 4294967295. &<1-32> indicates that you can specify a maximum of 32 AS numbers.

replace: Replaces the original AS numbers. If you do not specify this keyword, the command adds the specified AS numbers before the original AS_PATH attribute.

Examples

# Configure node 10 in permit mode for routing policy policy1 to add AS number 200 before the original AS_PATH attribute of BGP routes matching AS path list 1.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match as-path 1

[Sysname-route-policy-policy1-10] apply as-path 200

Related commands

display ip as-path

if-match as-path

ip as-path

apply comm-list delete

Use apply comm-list delete to delete the COMMUNITY attributes from BGP routes.

Use undo apply comm-list to restore the default.

Syntax

apply comm-list { comm-list-number | comm-list-name } delete

undo apply comm-list

Default

No COMMUNITY attributes are deleted from BGP routes.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

comm-list-number: Specifies a basic community list by its number in the range of 1 to 99 or an advanced community list by its number in the range of 100 to 199.

comm-list-name: Specifies a community list by its name, a case-sensitive string of 1 to 63 characters that cannot contain only numbers.

Examples

# Configure node 10 in permit mode for routing policy policy1 to delete the COMMUNITY attributes specified in community list 1 from BGP routes.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] apply comm-list 1 delete

Related commands

ip community-list

apply community

Use apply community to set the COMMUNITY attribute for BGP routes.

Use undo apply community to remove the specified COMMUNITY attribute for BGP routes.

Syntax

apply community { none | additive | { community-number&<1-32> | aa:nn&<1-32> | internet | no-advertise | no-export | no-export-subconfed } * [ additive ] }

undo apply community [ none | additive | { community-number&<1-32> | aa:nn&<1-32> | internet | no-advertise | no-export | no-export-subconfed } * [ additive ] ]

Default

No COMMUNITY attribute is set for BGP routes.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

none: Removes the COMMUNITY attributes of BGP routes.

community-number&<1-32>: Specifies a community sequence number in the range of 1 to 4294967295. &<1-32> indicates that you can specify a maximum of 32 community sequence numbers.

aa:nn&<1-32>: Specifies a community number. Both aa and nn are in the range of 0 to 65535. &<1-32> indicates that you can specify a maximum of 32 community numbers.

internet: Sets the INTERNET community attribute for BGP routes. Routes with this attribute can be advertised to all BGP peers. By default, all routes have this attribute.

no-advertise: Sets the NO_ADVERTISE community attribute for BGP routes. Routes with this attribute cannot be advertised to any peers.

no-export: Sets the NO_EXPORT community attribute for BGP routes. Routes with this attribute cannot be advertised out of the AS or confederation, but can be advertised to other sub-ASs in the confederation.

no-export-subconfed: Sets the NO_EXPORT_SUBCONFED community attribute for BGP routes. Routes with this attribute cannot be advertised out of the local AS or to other sub-ASs in the confederation.

additive: Adds the specified COMMUNITY attribute to the original COMMUNITY attribute of BGP routes.

Examples

# Configure node 16 in permit mode for routing policy setcommunity to set the NO_EXPORT community attribute for BGP routes.

<Sysname> system-view

[Sysname] route-policy setcommunity permit node 16

[Sysname-route-policy-setcommunity-16] apply community no-export

Related commands

if-match community

ip community-list

apply cost

Use apply cost to set a cost for routes.

Use undo apply cost to restore the default.

Syntax

apply cost [ + | - ] cost-value

undo apply cost

Default

No cost is set for routes.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

+: Increases a cost value.

-: Decreases a cost value.

cost-value: Specifies a cost in the range of 0 to 4294967295.

Examples

# Configure node 10 in permit mode for routing policy policy1 to set a cost of 120 for OSPF external routes.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match route-type external-type1or2

[Sysname-route-policy-policy1-10] apply cost 120

apply cost-type

Use apply cost-type to set a cost type for routes.

Use undo apply cost-type to restore the default.

Syntax

apply cost-type { external | internal | type-1 | type-2 }

undo apply cost-type

Default

No cost type is set for routes.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

external: Sets the cost type to IS-IS external route.

internal: Sets the cost type to IS-IS internal route, or sets the MED value for a matching BGP route to the IGP metric of the route's next hop.

type-1: Sets the cost type to OSPF Type-1 external route.

type-2: Sets the cost type to OSPF Type-2 external route.

Usage guidelines

For IS-IS, the apply cost-type internal command sets the cost type for a matching IS-IS route to IS-IS internal route.

For BGP, the apply cost-type internal command sets the MED for a matching BGP route learned from an IBGP peer to the IGP metric of the route's next hop. The MED is modified when BGP advertises the route to an EBGP peer.

Examples

# Configure node 10 in permit mode for routing policy policy1 to set the cost type for routes that have a tag of 8 to OSPF Type-1 external routes.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match tag 8

[Sysname-route-policy-policy1-10] apply cost-type type-1

apply extcommunity rt

Use apply extcommunity rt to set the RT extended community attribute for BGP routes.

Use undo apply extcommunity rt to remove the RT extended community attribute for BGP routes.

Syntax

apply extcommunity { rt route-target }&<1-32> [ additive ]

undo apply extcommunity [ { rt route-target }&<1-32> ]

Default

No RT extended community attribute is set for BGP routes.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

{ rt route-target }&<1-32>: Sets the RT extended community attribute, a string of 3 to 21 characters. &<1-32> indicates that you can specify a maximum of 32 RT extended community attributes.

An RT attribute has the following forms:

·          16-bit AS number:32-bit self-defined number. For example, 101:3. The AS number is in the range of 0 to 65535, and the self-defined number is in the range of 0 to 4294967295.

·          32-bit IP address:16-bit self-defined number. For example, 192.168.122.15:1. The self-defined number is in the range of 0 to 65535.

·          32-bit AS number:16-bit self-defined number. For example, 70000:3. The AS number is in the range of 65536 to 4294967295, and the self-defined number is in the range of 0 to 65535.

additive: Adds the specified attribute to the original extended community attribute.

Usage guidelines

If you do not specify any parameters, the undo form of the command removes all extended community attributes for BGP routes.

Examples

# Configure node 10 in permit mode for routing policy policy1 to add the RT extended community attribute 100:2 to the original extended community attribute of BGP routes matching AS path list 1.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match as-path 1

[Sysname-route-policy-policy1-10] apply extcommunity rt 100:2 additive

apply extcommunity soo

Use apply extcommunity soo to set the SoO extended community attribute for BGP routes.

Use undo apply extcommunity soo to remove the SoO extended community attribute for BGP routes.

Syntax

apply extcommunity soo { site-of-origin }&<1-32> [ additive ]

undo apply extcommunity [ soo ]

Default

No SoO extended community attribute is set for BGP routes.

Views

Routing policy node view

Predefined user roles

network-admin

mdc-admin

Parameters

site-of-origin: Sets the SoO extended community attribute, a string of 3 to 21 characters. &<1-32> indicates that you can specify a maximum of 32 SoO extended community attributes.

An SoO attribute has the following forms:

·          16-bit AS number:32-bit self-defined number. For example, 101:3. The AS number is in the range of 0 to 65535, and the self-defined number is in the range of 0 to 4294967295.

·          32-bit IP address:16-bit self-defined number. For example, 192.168.122.15:1. The self-defined number is in the range of 0 to 65535.

·          32-bit AS number:16-bit self-defined number. For example, 70000:3. The AS number is in the range of 65536 to 4294967295, and the self-defined number is in the range of 0 to 65535.

additive: Adds the specified attribute to the original extended community attribute.

Usage guidelines

If you do not specify any parameters, the undo form of the command removes all extended community attributes for BGP routes.

Examples

# Configure node 10 in permit mode for routing policy policy1 to add the SoO extended community attribute 1:100 to the original extended community attribute of BGP routes matching AS path list 1.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match as-path 1

[Sysname-route-policy-policy1-10] apply extcommunity soo 1:100 additive

apply ip-precedence

Use apply ip-precedence to set an IP precedence for matching routes.

Use undo apply ip-precedence to restore the default.

Syntax

apply ip-precedence { value | clear }

undo apply ip-precedence

Default

No IP precedence is set.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

value: Specifies an IP precedence in the range of 0 to 7.

clear: Clears the IP precedence of matching routes.

Examples

# Configure node 10 in permit mode for routing policy policy1 to set an IP precedence of 3 for routes matching prefix list 100.

<Sysname> system-view

[Sysname] ip prefix-list 100 permit 192.168.10.1 24

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match ip address prefix-list 100

[Sysname-route-policy-policy1-10] apply ip-precedence 3

apply isis

Use apply isis to redistribute routes into the specified IS-IS level.

Use undo apply isis to restore the default.

Syntax

apply isis { level-1 | level-1-2 | level-2 }

undo apply isis

Default

No IS-IS level is set.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

level-1: Redistributes routes into IS-IS Level-1.

level-1-2: Redistributes routes into both IS-IS Level-1 and Level-2.

level-2: Redistributes routes into IS-IS Level-2.

Examples

# Configure node 10 in permit mode for routing policy policy1 to redistribute routes that have a tag of 8 to IS-IS level-2.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match tag 8

[Sysname-route-policy-policy1-10] apply isis level-2

apply local-preference

Use apply local-preference to set a local preference for BGP routes.

Use undo apply local-preference to restore the default.

Syntax

apply local-preference preference

undo apply local-preference

Default

No local preference is set for BGP routes.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

preference: Specifies a local preference in the range of 0 to 4294967295.

Examples

# Configure node 10 in permit mode for routing policy policy1 to set a local preference of 130 for BGP routes matching AS path list 1.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match as-path 1

[Sysname-route-policy-policy1-10] apply local-preference 130

apply origin

Use apply origin to set the ORIGIN attribute for BGP routes.

Use undo apply origin to restore the default.

Syntax

apply origin { egp as-number | igp | incomplete }

undo apply origin

Default

No ORIGIN attribute is set for BGP routes.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

egp as-number: Sets the ORIGIN attribute to EGP. The as-number argument specifies an AS number in the range 1 to 4294967295 for EGP routes.

igp: Sets the ORIGIN attribute to IGP.

incomplete: Sets the ORIGIN attribute to UNKNOWN.

Examples

# Configure node 10 in permit mode for routing policy policy1 to set the ORIGIN attribute to IGP for BGP routes matching AS path list 1.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match as-path 1

[Sysname-route-policy-policy1-10] apply origin igp

apply preference

Use apply preference to set a preference for a routing protocol.

Use undo apply preference to restore the default.

Syntax

apply preference preference

undo apply preference

Default

No preference is set for a routing protocol.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

preference: Specifies a preference in the range of 1 to 255.

Usage guidelines

If you have set preferences for routing protocols by using the preference command, the apply preference command sets a new preference for the matching routing protocol. Unmatched routing protocols still use the preferences set by using the preference command.

Examples

# Configure node 10 in permit mode for routing policy policy1 to set the preference for OSPF external routes to 90.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match route-type external-type1or2

[Sysname-route-policy-policy1-10] apply preference 90

apply preferred-value

Use apply preferred-value to set a preferred value for BGP routes.

Use undo apply preferred-value to restore the default.

Syntax

apply preferred-value preferred-value

undo apply preferred-value

Default

No preferred value is set for BGP routes.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

preferred-value: Specifies a preferred value in the range of 0 to 65535.

Examples

# Configure node 10 in permit mode for routing policy policy1 to set a preferred value of 66 for BGP routes matching AS path list 1.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match as-path 1

[Sysname-route-policy-policy1-10] apply preferred-value 66

apply prefix-priority

Use apply prefix-priority to set a prefix priority for routes.

Use undo apply prefix-priority to restore the default.

Syntax

apply prefix-priority { critical | high | medium }

undo apply prefix-priority

Default

No prefix priority is set, which means the prefix priority is low.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

critical: Sets the critical prefix priority for routes.

high: Sets the high prefix priority for routes.

medium: Sets the medium prefix priority for routes.

Examples

# Configure node 10 in permit mode for routing policy policy1 to set prefix priority critical for routes matching prefix list abc.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match ip address prefix-list abc

[Sysname-route-policy-policy1-10] apply prefix-priority critical

apply tag

Use apply tag to set a tag for IGP routes.

Use undo apply tag to restore the default.

Syntax

apply tag tag-value

undo apply tag

Default

No routing tag is set for IGP routes.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

tag-value: Specifies the tag value in the range of 0 to 4294967295.

Examples

# Configure node 10 in permit mode for routing policy policy1 to set a tag of 100 for IGP routes.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] apply tag 100

apply traffic-index

Use apply traffic-index to set a traffic index for BGP routes.

Use undo apply traffic-index to restore the default.

Syntax

apply traffic-index { value | clear }

undo apply traffic-index

Default

No traffic index is set for BGP routes.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

value: Specifies the traffic index in the range of 1 to 64.

clear: Clear the traffic index of BGP routes.

Examples

# Configure node 10 in permit mode for routing policy policy1 to set a traffic index of 6 for BGP routes matching extended community list 100.

<Sysname> system-view

[Sysname] ip extcommunity-list 100 permit rt 100:100

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match extcommunity 100

[Sysname-route-policy-policy1-10] apply traffic-index 6

continue

Use continue to specify the next node to be matched.

Use undo continue to restore the default.

Syntax

continue [ node-number ]

undo continue

Default

No next node is specified.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

node-number: Specifies the routing policy node number in the range of 0 to 65535.

Usage guidelines

The specified next node must have a larger number than the current node.

Example

# Specify the next node 20 for node 10 of the routing policy policy1.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] continue 20

display ip as-path

Use display ip as-path to display BGP AS path list information.

Syntax

display ip as-path [ as-path-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

as-path-number: Specifies an AS path list by its number in the range of 1 to 256. If you do not specify this argument, the command displays information about all BGP AS path lists.

Examples

# Display information about BGP AS path list 1.

<Sysname> display ip as-path 1

ListID    Mode      Expression

1         Permit    2

Table 1 Command output

Field

Description

ListID

AS path list ID.

Mode

Match mode:

·         Permit.

·         Deny.

Expression

Regular expression used to match routes.

 

display ip community-list

Use display ip community-list to display BGP community list information.

Syntax

display ip community-list [ basic-community-list-number | adv-community-list-number | name comm-list-name ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

basic-community-list-number: Specifies a basic community list by its number in the range of 1 to 99.

adv-community-list-number: Specifies an advanced community list by its number in the range of 100 to 199.

name comm-list-name: Specifies a community list by its name, a case-sensitive string of 1 to 63 characters that cannot contain only numbers.

Usage guidelines

If no community list is specified, this command displays information about all BGP community lists.

Examples

# Display information about all BGP community lists.

<Sysname> display ip community-list

Community List Basic aaa

        Permit

Community List Advanced bbb

        Permit  3333

Table 2 Command output

Field

Description

Community List Basic

Basic community list.

Community List Advanced

Advanced community list.

permit

Match mode:

·         Permit.

·         Deny.

 

display ip extcommunity-list

Use display ip extcommunity-list to display BGP extended community list information.

Syntax

display ip extcommunity-list [ ext-comm-list-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

ext-comm-list-number: Specifies an extended community list by its number in the range of 1 to 199. If you do not specify this argument, the command displays information about all BGP extended community lists.

Examples

# Display information about BGP extended community list 1.

<Sysname> display ip extcommunity-list 1

Extended Community List Number 1

         Permit rt: 9:6

         Permit soo: 9:6

Table 3 Command output

Field

Description

Extended Community List Number

Extended community list.

permit

Match mode:

·         Permit.

·         Deny.

rt

Route Target (RT) extended community attribute.

soo

Site of Origin (SoO) extended community attribute.

 

display route-policy

Use display route-policy to display routing policy information.

Syntax

display route-policy [ name route-policy-name ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

name route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters. If you do not specify this option, the command displays information about all routing policies.

Examples

# Display information about routing policy policy1.

<Sysname> display route-policy name policy1

Route-policy: policy1

  Permit : 1

          if-match cost 10

          continue: next node 11

          apply preference 10

Table 4 Command output

Field

Description

Route-policy

Routing policy name.

permit

Match mode:

·         Permit.

·         Deny.

if-match

Match criterion.

continue

Specify the next node to be matched.

apply

Action.

 

if-match as-path

Use if-match as-path to match BGP routes whose AS_PATH attribute matches a specified AS path list.

Use undo if-match as-path to remove the specified AS path list match criterion.

Syntax

if-match as-path as-path-number&<1-32>

undo if-match as-path [ as-path-number&<1-32> ]

Default

No AS path list match criterion is configured.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

as-path-number&<1-32>: Specifies an AS path list by its number in the range of 1 to 256. &<1-32> indicates that you can specify a maximum of 32 AS path lists.

Examples

# Configure AS path list 2 to permit BGP routes containing AS number 200 or 300 to pass. Configure node 10 in permit mode for routing policy test to match AS path list 2.

<Sysname> system-view

[Sysname] ip as-path 2 permit _*200.*300

[Sysname] route-policy test permit node 10

[Sysname-route-policy-policy1-10] if-match as-path 2

Related commands

apply as-path

ip as-path

if-match community

Use if-match community to match BGP routes whose COMMUNITY attribute matches a specified community list.

Use undo if-match community to remove the specified community list match criterion.

Syntax

if-match community { { basic-community-list-number | name comm-list-name } [ whole-match ] | adv-community-list-number }&<1-32>

undo if-match community [ { basic-community-list-number | name comm-list-name } [ whole-match ] | adv-community-list-number ]&<1-32>

Default

No community list match criterion is configured.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

basic-community-list-number: Specifies a basic community list by its number in the range of 1 to 99.

adv-community-list-number: Specifies an advanced community list by its number in the range of 100 to 199.

comm-list-name: Specifies a community list by its name, a case-sensitive string of 1 to 63 characters that cannot contain only numbers.

whole-match: Exactly matches the specified community list. All of the communities and only those communities specified must be present.

&<1-32>: Indicates that you can specify a maximum of 32 community lists.

Examples

# Configure community list 1 to permit BGP routes with community number 100 or 200. Then configure node 10 in permit mode for routing policy test to use community list 1 to match BGP routes.

<Sysname> system-view

[Sysname] ip community-list 1 permit 100 200

[Sysname] route-policy test permit node 10

[Sysname-route-policy-test-10] if-match community 1

Related commands

apply community

ip community-list

if-match cost

Use if-match cost to match routes that have the specified cost.

Use undo if-match cost to restore the default.

Syntax

if-match cost cost-value

undo if-match cost

Default

No cost match criterion is configured.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

cost-value: Specifies a cost in the range of 0 to 4294967295.

Examples

# Configure node 10 in permit mode for routing policy policy1 to permit routes with a cost of 8.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match cost 8

if-match extcommunity

Use if-match extcommunity to match BGP routes whose extended community attribute matches a specified extended community list.

Use undo if-match extcommunity to remove the specified extended community list match criterion.

Syntax

if-match extcommunity ext-comm-list-number&<1-32>

undo if-match extcommunity [ ext-comm-list-number&<1-32> ]

Default

No extended community list match criterion is configured.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

ext-comm-list-number&<1-32>: Specifies an extended community list by its number in the range of 1 to 199. &<1-32> indicates that you can specify a maximum of 32 extended community lists.

Examples

# Configure node 10 in permit mode for routing policy policy1 to match BGP routes whose extended community attribute matches extended community lists 100 and 150.

<Sysname> system-view

[Sysname] ip extcommunity-list 100 permit rt 100:100

[Sysname] ip extcommunity-list 150 permit rt 150:150

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match extcommunity 100 150

Related commands

apply extcommunity

ip extcommunity-list

if-match interface

Use if-match interface to match routes that have the specified output interfaces.

Use undo if-match interface to remove the specified output interface match criterion.

Syntax

if-match interface { interface-type interface-number }&<1-16>

undo if-match interface [ interface-type interface-number ]&<1-16>

Default

No output interface match criterion is configured.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

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

&<1-16>: Indicates that you can specify a maximum of 16 interfaces.

Usage guidelines

BGP does not support criteria for matching the output interfaces of routes.

Examples

# Configure node 10 in permit mode for routing policy policy1 to permit routes with the output interface VLAN-interface 1.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match interface vlan-interface 1

if-match local-preference

Use if-match local-preference to match BGP routes that have the specified local preference.

Use undo if-match local-preference to restore the default.

Syntax

if-match local-preference preference

undo if-match local-preference

Default

No local preference match criterion is configured.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

preference: Specifies a local preference in the range of 0 to 4294967295.

Examples

# Create node 10 in permit mode for routing policy policy1 to match BGP routes that have a local preference of 2.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match local-preference 2

if-match route-type

Use if-match route-type to set a route-type match criterion.

Use undo if-match route-type to remove the specified route-type match criterion.

Syntax

if-match route-type { bgp-evpn-imet | bgp-evpn-ip-prefix | bgp-evpn-mac-ip | external-type1 | external-type1or2 | external-type2 | internal | is-is-level-1 | is-is-level-2 | nssa-external-type1 | nssa-external-type1or2 | nssa-external-type2 } *

undo if-match route-type [ bgp-evpn-imet | bgp-evpn-ip-prefix | bgp-evpn-mac-ip | external-type1 | external-type1or2 | external-type2 | internal | is-is-level-1 | is-is-level-2 | nssa-external-type1 | nssa-external-type1or2 | nssa-external-type2 ] *

Default

No route-type match criterion is set.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

bgp-evpn-imet: Matches BGP EVPN Inclusive Multicast Ethernet Tag (IMET) routes.

bgp-evpn-ip-prefix: Matches BGP EVPN IP prefix advertisement routes.

bgp-evpn-mac-ip: Matches BGP EVPN MAC/IP advertisement routes.

external-type1: Matches OSPF Type 1 external routes.

external-type1or2: Matches OSPF Type 1 and Type 2 external routes.

external-type2: Matches OSPF Type 2 external routes.

internal: Matches OSPF internal routes (including OSPF intra-area and inter-area routes).

is-is-level-1: Matches IS-IS Level-1 routes.

is-is-level-2: Matches IS-IS Level-2 routes.

nssa-external-type1: Matches OSPF NSSA Type 1 external routes.

nssa-external-type1or2: Matches OSPF NSSA Type 1 and 2 external routes.

nssa-external-type2: Matches OSPF NSSA Type 2 external routes.

Examples

# Configure node 10 in permit mode for routing policy policy1 to match OSPF internal routes.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match route-type internal

if-match tag

Use if-match tag to match IGP routes that have the specified tag.

Use undo if-match tag to restore the default.

Syntax

if-match tag tag-value

undo if-match tag

Default

No tag match criterion is configured.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

tag-value: Specifies a tag in the range of 0 to 4294967295.

Examples

# Configure node 10 in permit mode for routing policy policy1 to match IGP routes that have a tag of 8.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match tag 8

ip as-path

Use ip as-path to configure an AS path list.

Use undo ip as-path to remove an AS path list.

Syntax

ip as-path as-path-number { deny | permit } regular-expression

undo ip as-path as-path-number [ regular-expression | deny | permit ]

Default

No AS path lists exist.

Views

System view

Predefined user roles

network-admin

Parameters

as-path-number: Specifies an AS path list number in the range of 1 to 256.

deny: Specifies the match mode for the AS path list as deny.

permit: Specifies the match mode for the AS path list as permit.

regular-expression: Specifies an AS path regular expression, a string of 1 to 63 characters.

Usage guidelines

BGP routing updates contain an AS_PATH attribute field that identifies the ASs through which the routes have passed. An AS path regular expression, for example, ^200.*100$, matches the AS_PATH attribute that starts with AS 200 and ends with AS 100. For more information about regular expressions, see Fundamentals Configuration Guide.

Examples

# Configure AS path list 1 to permit routes whose AS_PATH attribute starts with 10.

<Sysname> system-view

[Sysname] ip as-path 1 permit ^10

Related commands

apply as-path

display ip as-path

if-match as-path

ip community-list

Use ip community-list to configure a community list.

Use undo ip community-list to remove a community list.

Syntax

ip community-list { basic-comm-list-num | basic basic-comm-list-name } { deny | permit } [ community-number&<1-32> | aa:nn&<1-32> ] [ internet | no-advertise | no-export | no-export-subconfed ] *

undo ip community-list { basic-comm-list-num | basic basic-comm-list-name } [ deny | permit ] [ community-number&<1-32> | aa:nn&<1-32> ] [ internet | no-advertise | no-export | no-export-subconfed ] *

ip community-list { adv-comm-list-num | advanced adv-comm-list-name } { deny | permit } regular-expression

undo ip community-list { adv-comm-list-num | advanced adv-comm-list-name } [ deny | permit ] [ regular-expression ]

Default

No community lists exist.

Views

System view

Predefined user roles

network-admin

Parameters

basic-comm-list-num: Specifies a basic community list number in the range of 1 to 99.

basic basic-comm-list-name: Specifies a basic community list name, a case-sensitive string of 1 to 63 characters that cannot contain only numbers.

advanced adv-comm-list-name: Specifies an advanced community list name, a case-sensitive string of 1 to 63 characters that cannot contain only numbers.

adv-comm-list-num: Specifies an advanced community list number in the range of 100 to 199.

regular-expression: Specifies a regular expression for the advanced community list, a string of 1 to 63 characters. For more information about regular expressions, see Fundamentals Configuration Guide.

deny: Specifies the match mode for the community list as deny.

permit: Specifies the match mode for the community list as permit.

community-number&<1-32>: Specifies a community sequence number in the range of 1 to 4294967295. &<1-32> indicates that you can specify a maximum of 32 community sequence numbers.

aa:nn&<1-32>: Specifies a community number. Both aa and nn are in the range of 0 to 65535. &<1-32> indicates that you can specify a maximum of 32 community numbers.

internet: Specifies the INTERNET community attribute. Routes with this attribute can be advertised to all BGP peers. By default, all routes have this attribute.

no-advertise: Specifies the NO_ADVERTISE community attribute. Routes with this attribute cannot be advertised to other BGP peers.

no-export: Specifies the NO_EXPORT community attribute. Routes with this attribute cannot be advertised out of the local AS or the local confederation but can be advertised to other ASs in the confederation.

no-export-subconfed: Specifies the NO_EXPORT_SUBCONFED community attribute. Routes with this attribute cannot be advertised out of the local AS, or to other sub-ASs in the local confederation.

Examples

# Configure basic community list 1 to permit routes with the INTERNET community attribute.

<Sysname> system-view

[Sysname] ip community-list 1 permit internet

# Configure advanced community list 100 to permit routes with the COMMUNITY attribute starting with 10.

<Sysname> system-view

[Sysname] ip community-list 100 permit ^10

Related commands

apply comm-list delete

apply community

display ip community-list

if-match community

ip extcommunity-list

Use ip extcommunity-list to configure an extended community list.

Use undo ip extcommunity-list to remove an extended community list.

Syntax

ip extcommunity-list ext-comm-list-number { deny | permit } { rt route-target | soo site-of-origin }&<1-32>

undo ip extcommunity-list ext-comm-list-number [ { deny | permit } [ rt route-target | soo site-of-origin ]&<1-32> ]

Default

No extended community lists exist.

Views

System view

Predefined user roles

network-admin

Parameters

ext-comm-list-number: Specifies an extended community list number in the range of 1 to 199.

deny: Specifies the match mode for the extended community list as deny.

permit: Specifies the match mode for the extended community list as permit.

rt route-target: Specifies a space-separated list of up to 32 RT extended community attribute items. Each item is a string of 3 to 21 characters.

soo site-of-origin: Specifies a space-separated list of up to 32 SoO extended community attribute items. Each item is a string of 3 to 21 characters.

An RT or SoO attribute has the following forms:

·          16-bit AS number:32-bit self-defined number. For example, 101:3. The AS number is in the range of 0 to 65535, and the self-defined number is in the range of 0 to 4294967295.

·          32-bit IP address:16-bit self-defined number. For example, 192.168.122.15:1. The self-defined number is in the range of 0 to 65535.

·          32-bit AS number:16-bit self-defined number. For example, 70000:3. The AS number is in the range of 65536 to 4294967295, and the self-defined number is in the range of 0 to 65535.

Examples

# Configure extended community list 1 to permit routes with RT 200:200 to pass.

<Sysname> system-view

[Sysname] ip extcommunity-list 1 permit rt 200:200

# Configure extended community list 2 to permit routes with SoO 100:100 to pass.

<Sysname> system-view

[Sysname] ip extcommunity-list 2 permit soo 100:100

Related commands

apply extcommunity

display ip extcommunity-list

if-match extcommunity

route-policy

Use route-policy to create a routing policy and a node and enter routing policy node view, or enter the view of an existing routing policy node.

Use undo route-policy to remove a routing policy or a node of it.

Syntax

route-policy route-policy-name { deny | permit } node node-number

undo route-policy route-policy-name [ deny | permit ] [ node node-number ]

Default

No routing policies exist.

Views

System view

Predefined user roles

network-admin

Parameters

route-policy-name: Specifies a routing policy name, a case-sensitive string of 1 to 63 characters.

deny: Specifies the deny match mode for the routing policy node. If a route matches all the if-match clauses of the node, it is denied without being compared with the next node. If a route does not match any if-match clauses of the node, the route is compared with the next node.

permit: Specifies the permit match mode for the routing policy node. If a route matches all the if-match clauses of the node, it is handled by the apply clauses of the node. If a route does not match any if-match clauses of the node, the route is compared with the next node.

node node-number: Specifies a node number in the range of 0 to 65535. A node with a smaller number is matched first.

Usage guidelines

Use a routing policy to filter routing information. A routing policy can contain several nodes and each node contains a set of if-match and apply clauses. The if-match clauses define the match criteria of the node and the apply clauses define the actions to be taken on packets matching the criteria. The relation between the if-match clauses of a node is logical AND. All the if-match clauses must be met. The relation between nodes is logical OR. A packet passing a node passes the routing policy. If a packet does not pass any nodes, the packet does not pass the routing policy.

Examples

# Create node 10 in permit mode for routing policy policy1 and enter routing policy node view.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10]

Related commands

display route-policy

IPv4 routing policy commands

apply fast-reroute

Use apply fast-reroute to set a backup link for fast reroute (FRR).

Use undo apply fast-reroute to restore the default.

Syntax

apply fast-reroute { backup-interface interface-type interface-number [ backup-nexthop ip-address ] | backup-nexthop ip-address }

undo apply fast-reroute

Default

No backup link for FRR is configured.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

backup-interface interface-type interface-number: Specifies a backup output interface by its type and number. If the specified interface is a non-P2P interface, you must also specify a backup next hop. Non-P2P interfaces include NBMA and broadcast interfaces.

backup-nexthop ip-address: Specifies a backup next hop.

Examples

# Configure node 10 of routing policy policy1 to set the backup output interface VLAN-interface 1 and backup next hop 193.1.1.8 for the route destined for 100.1.1.0/24.

<Sysname> system-view

[Sysname] ip prefix-list abc index 10 permit 100.1.1.0 24

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match ip address prefix-list abc

[Sysname-route-policy-policy1-10] apply fast-reroute backup-interface vlan-interface 1 backup-nexthop 193.1.1.8

apply ip-address next-hop

Use apply ip-address next-hop to set a next hop for IPv4 routes.

Use undo apply ip-address next-hop to restore the default.

Syntax

apply ip-address next-hop ip-address [ public | vpn-instance vpn-instance-name ]

undo apply ip-address next-hop

Default

No next hop is set for IPv4 routes.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

ip-address: Specifies the next hop IP address.

public: Specifies the public network.

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters.

Usage guidelines

If you use this command to set a next hop for redistributed routes, the configuration does not take effect.

If you do not specify the public keyword and the vpn-instance vpn-instance-name option, the next hop belongs to the public network.

Examples

# Configure node 10 in permit mode for routing policy policy1 to set next hop 193.1.1.8 for routes matching prefix list 100.

<Sysname> system-view

[Sysname] ip prefix-list 100 permit 192.168.10.1 24

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match ip address prefix-list 100

[Sysname-route-policy-policy1-10] apply ip-address next-hop 193.1.1.8

display ip prefix-list

Use display ip prefix-list to display IPv4 prefix list statistics.

Syntax

display ip prefix-list [ name prefix-list-name ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

name prefix-list-name: Specifies an IP prefix list by its name, a case-sensitive string of 1 to 63 characters. If you do not specify this option, the command displays statistics for all IPv4 prefix lists.

Examples

# Display the statistics for IPv4 prefix list abc.

<Sysname> display ip prefix-list name abc

Prefix-list: abc

 Permitted 0

 Denied 0

         index: 10        Deny   6.6.6.0/24              ge  26  le  28

Table 5 Command output

Field

Description

Prefix-list

Name of the IPv4 prefix list.

Permitted

Number of routes matching the criterion.

Denied

Number of routes not matching the criterion.

index

Index of an item.

deny

Match mode of the item:

·         Permit.

·         Deny.

6.6.6.0/24

IP address and mask.

ge

Greater-equal, the lower mask length limit.

le

Less-equal, the upper mask length limit.

 

Related commands

ip prefix-list

reset ip prefix-list

if-match ip

Use if-match ip to match IPv4 routes whose destination, next hop, or source address matches an ACL or IPv4 prefix list.

Use undo if-match ip to remove the specified ACL or IPv4 prefix list match criterion.

Syntax

if-match ip { address | next-hop | route-source } { acl ipv4-acl-number | prefix-list prefix-list-name }

undo if-match ip { address | next-hop | route-source } [ acl | prefix-list ]

Default

No ACL or IPv4 prefix list match criterion is configured.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

address: Matches the destination address of IPv4 routes.

next-hop: Matches the next hop of IPv4 routes.

route-source: Matches the source address of BGP routes. This keyword corresponds to the Neighbor field in the output from the display ip routing-table verbose command.

acl ipv4-acl-number: Specifies an ACL by its number. The value range for the ipv4-acl-number argument is 2000 to 3999 for the address keyword, and 2000 to 2999 for the next-hop keyword and route-source keyword.

prefix-list prefix-list-name: Specifies an IP prefix list by its name, a case-sensitive string of 1 to 63 characters.

Examples

# Configure node 10 of routing policy policy1 to match IPv4 routes whose next hop matches IP prefix list p1.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match ip next-hop prefix-list p1

ip prefix-list

Use ip prefix-list to configure an IPv4 prefix list or an item for the list.

Use undo ip prefix-list to remove an IPv4 prefix list or an item of it.

Syntax

ip prefix-list prefix-list-name [ index index-number ] { deny | permit } ip-address mask-length [ greater-equal min-mask-length ] [ less-equal max-mask-length ]

undo ip prefix-list prefix-list-name [ index index-number ]

Default

No IPv4 prefix lists exist.

Views

System view

Predefined user roles

network-admin

Parameters

prefix-list-name: Specifies an IPv4 prefix list name, a case-sensitive string of 1 to 63 characters.

index index-number: Specifies an index number for an IPv4 prefix list item, in the range of 1 to 65535. An item with a smaller index number is matched first. If you do not specify this option, the index number starts from 10 and increments by 10 for each of the consecutive prefix list items.

deny: Specifies the deny mode. If a route matches the item, the route is denied without being compared with the next item. If a route does not match the item, the route is compared with the next item.

permit: Specifies the permit mode. If a route matches the item, it passes the IPv4 prefix list. If a route does not match the item, the route is compared with the next item.

ip-address mask-length: Specifies an IPv4 prefix and mask length. The value range for the mask-length argument is 0 to 32.

greater-equal min-mask-length, less-equal max-mask-length: Specifies a prefix length range. The greater-equal keyword means "greater than or equal to" and the less-equal keyword means "less than or equal to." The prefix length range relation is mask-length <= min-mask-length <= max-mask-length <= 32.

·          If only the min-mask-length argument is specified, the prefix length range is [ min-mask-length, 32 ].

·          If only the max-mask-length argument is specified, the prefix length range is [ mask-length, max-mask-length ].

·          If both the min-mask-length and max-mask-length arguments are specified, the prefix length range is [ min-mask-length, max-mask-length ].

Usage guidelines

An IPv4 prefix list is used to filter IPv4 addresses. It can contain multiple items, each of which specifies a range of IPv4 prefixes. The relation between the items is logical OR. If an item is passed, the IPv4 prefix list is passed. If no item is passed, the IP prefix list cannot be passed.

If both the ip-address and mask-length arguments are specified as 0.0.0.0 0, only the default route will be matched.

To match all routes, use 0.0.0.0 0 less-equal 32.

Examples

# Configure IP prefix list p1 to permit routes destined for network 10.0.0.0/8 and with mask length 17 or 18.

<Sysname> system-view

[Sysname] ip prefix-list p1 permit 10.0.0.0 8 greater-equal 17 less-equal 18

Related commands

display ip prefix-list

reset ip prefix-list

reset ip prefix-list

Use reset ip prefix-list to clear IPv4 prefix list statistics.

Syntax

reset ip prefix-list [ prefix-list-name ]

Views

User view

Predefined user roles

network-admin

Parameters

prefix-list-name: Specifies an IP prefix list by its name, a case-sensitive string of 1 to 63 characters. If you do not specify this argument, the command clears statistics for all IPv4 prefix lists.

Examples

# Clear the statistics for IPv4 prefix list abc.

<Sysname> reset ip prefix-list abc

Related commands

display ip prefix-list

ip prefix-list

IPv6 routing policy commands

apply ipv6 fast-reroute

Use apply ipv6 fast-reroute to set a backup link for fast reroute (FRR).

Use undo apply ipv6 fast-reroute to restore the default.

Syntax

apply ipv6 fast-reroute { backup-interface interface-type interface-number [ backup-nexthop ipv6-address ] | backup-nexthop ipv6-address }

undo apply ipv6 fast-reroute

Default

No backup link for FRR is configured.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

backup-interface interface-type interface-number: Specifies a backup output interface by its type and number. If the specified interface is a non-P2P interface, you must also specify a backup next hop. Non-P2P interfaces include NBMA and broadcast interfaces.

backup-nexthop ipv6-address: Specifies an IPv6 backup next hop.

Examples

# Configure node 10 of routing policy policy1 to set the backup next hop 1::1/64 for the route destined for 100::1/64.

<Sysname> system-view

[Sysname] ipv6 prefix-list abc index 10 permit 100::1 64

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match ipv6 address prefix-list abc

[Sysname-route-policy-policy1-10] apply ipv6 fast-reroute backup-nexthop 1::1

apply ipv6 next-hop

Use apply ipv6 next-hop to set a next hop for IPv6 routes.

Use undo apply ipv6 next-hop to restore the default.

Syntax

apply ipv6 next-hop ipv6-address

undo apply ipv6 next-hop

Default

No next hop is set for IPv6 routes.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

ipv6-address: Specifies the next hop IPv6 address.

Usage guidelines

If you use this command to set a next hop for redistributed routes, the configuration does not take effect.

Examples

# Configure node 10 in permit mode for routing policy policy1 to set next hop 3ffe:506::1 for IPv6 routes matching prefix list 100.

<Sysname> system-view

[Sysname] ipv6 prefix-list 100 permit 2::2 64

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match ipv6 address prefix-list 100

[Sysname-route-policy-policy1-10] apply ipv6 next-hop 3ffe:506::1

display ipv6 prefix-list

Use display ipv6 prefix-list to display IPv6 prefix list statistics.

Syntax

display ipv6 prefix-list [ name prefix-list-name ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

name prefix-list-name: Specifies an IPv6 prefix list by its name, a case-sensitive string of 1 to 63 characters. If you do not specify this option, the command displays statistics for all IPv6 prefix lists.

Examples

# Display the statistics for all IPv6 prefix lists.

<Sysname> display ipv6 prefix-list

Prefix-list6: 666

 Permitted 0

 Denied 0

         index: 10        Permit 6::/64                  ge  66  le  88

Table 6 Command output

Field

Description

Prefix-list6

Name of the IPv6 prefix list.

Permitted

Number of routes matching the criterion.

Denied

Number of routes not matching the criterion.

index

Index number of an item.

permit

Match mode of the item:

·         Permit.

·         Deny.

6::/64

IPv6 address and prefix length for matching.

ge

Greater-equal, the lower prefix length limit.

le

Less-equal, the upper prefix length limit.

 

Related commands

ipv6 prefix-list

reset ipv6 prefix-list

if-match ipv6

Use if-match ipv6 to match IPv6 routes whose destination, next hop, or source address matches an ACL or IPv6 prefix list.

Use undo if-match ipv6 to remove the specified ACL or IPv6 prefix list match criterion.

Syntax

if-match ipv6 { address | next-hop | route-source } { acl ipv6-acl-number | prefix-list prefix-list-name

undo if-match ipv6 { address | next-hop | route-source } [ acl | prefix-list ]

Default

No ACL or IPv6 prefix list match criterion is configured.

Views

Routing policy node view

Predefined user roles

network-admin

Parameters

address: Matches the destination address of IPv6 routes.

next-hop: Matches the next hop of IPv6 routes.

route-source: Matches the source address of IPv6 routes.

acl ipv6-acl-number: Specifies an IPv6 ACL by its number. The value range for the ipv6-acl-number argument is 2000 to 3999 for the address keyword, and 2000 to 2999 for the next-hop and route-source keywords.

prefix-list prefix-list-name: Specifies an IPv6 prefix list by its name, a case-sensitive string of 1 to 63 characters.

Examples

# Configure node 10 of routing policy policy1 to permit routes whose next hop matches IPv6 prefix list p1.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy-policy1-10] if-match ipv6 next-hop prefix-list p1

ipv6 prefix-list

Use ipv6 prefix-list to configure an IPv6 prefix list or an item for it.

Use undo ipv6 prefix-list to remove an IPv6 prefix list or an item.

Syntax

ipv6 prefix-list prefix-list-name [ index index-number ] { deny | permit } ipv6-address { prefix-length [ greater-equal min-prefix-length ] [ less-equal max-prefix-length ] | inverse inverse-prefix-length }

undo ipv6 prefix-list prefix-list-name [ index index-number ]

Default

No IPv6 prefix lists exist.

Views

System view

Predefined user roles

network-admin

Parameters

prefix-list-name: Specifies an IPv6 prefix list name, a case-sensitive string of 1 to 63 characters.

index index-number: Specifies an index number for an IPv6 prefix list item, in the range of 1 to 65535. An item with a smaller index number is matched first. If you do not specify this option, the index number starts from 10 and increments by 10 for each of the consecutive IPv6 prefix list items.

deny: Specifies the deny mode. If a route matches the item, the route is denied without being compared with the next item. If a route does not match the item, the route is compared with the next item.

permit: Specifies the permit mode. If a route matches the item, it passes the IPv6 prefix list. If a route does not match the item, the route is compared with the next item.

ipv6-address: Specifies an IPv6 address.

prefix-length: Specifies the IPv6 prefix length. The value range for the prefix-length argument is 0 to 128.

greater-equal min-mask-length, less-equal max-mask-length: Specifies a prefix length range. The greater-equal keyword means "greater than or equal to" and the less-equal keyword means "less than or equal to."

The prefix length range relation is mask-length <= min-mask-length <= max-mask-length <= 128.

·          If only the min-prefix-length argument is specified, the prefix length range is [ min-prefix-length, 128 ].

·          If only the max-prefix-length argument is specified, the prefix length range is [ prefix-length, max-prefix-length ].

·          If both the min-prefix-length and max-prefix-length arguments are specified, the prefix length range is [ min-prefix-length, max-prefix-length ].

inverse inverse-prefix-length: Matches IPv6 addresses from the least significant bit to the specified length. The value range for the inverse-prefix-length argument is 1 to 128.

Usage guidelines

An IPv6 prefix list is used to filter IPv6 addresses. An IPv6 prefix list can have multiple items, and each of them specifies a range of IPv6 prefixes. The relation between the items is logical OR. A route passing an item passes the IPv6 prefix list. A route passing no item does not pass the IPv6 prefix list.

If the ipv6-address prefix-length argument is specified as :: 0, only the default route matches.

To match all routes, configure :: 0 less-equal 128.

Examples

# Permit IPv6 addresses with a mask length between 32 bits and 64 bits.

<Sysname> system-view

[Sysname] ipv6 prefix-list abc permit :: 0 greater-equal 32 less-equal 64

# Deny IPv6 addresses with a prefix 3FFE:D00::/32 and a prefix length greater than or equal to 32 bits.

<Sysname> system-view

[Sysname] ipv6 prefix-list abc deny 3FFE:D00:: 32 less-equal 128

Related commands

display ipv6 prefix-list

reset ipv6 prefix-list

reset ipv6 prefix-list

Use reset ipv6 prefix-list to clear IPv6 prefix list statistics.

Syntax

reset ipv6 prefix-list [ prefix-list-name ]

Views

User view

Predefined user roles

network-admin

Parameters

prefix-list-name: Specifies an IPv6 prefix list by its name, a case-sensitive string of 1 to 63 characters. If you do not specify this argument, the command clears statistics for all IPv6 prefix lists.

Examples

# Clear the statistics for IPv6 prefix list abc.

<Sysname> reset ipv6 prefix-list abc

Related commands

display ipv6 prefix-list

ipv6 prefix-list