05-Layer 3—IP Routing Command Reference

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06-Policy-based routing commands
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06-Policy-based routing commands 116.04 KB

Policy-based routing commands

apply next-hop

Use apply next-hop to set next hops.

Use undo apply next-hop to remove next hops.

Syntax

apply next-hop [ vpn-instance vpn-instance-name ] { ip-address [ direct ] [ track track-entry-number ] }&<1-n>

undo apply next-hop [ [ vpn-instance vpn-instance-name ] ip-address&<1-n> ]

Default

No next hop is set.

Views

Policy node view

Predefined user roles

network-admin

Parameters

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance to which the next hop belongs. The vpn-instance-name argument is a case-sensitive string of 1 to 31 characters. If the next hop belongs to the public network, do not specify this option.

ip-address: Specifies the IP address of the next hop. If you do not specify the vpn-instance vpn-instance-name option, the next hop belongs to the public network.

direct: Specifies that the next hop must be directly connected to take effect.

track track-entry-number: Specifies a track entry by its number in the range of 1 to 1024.

&<1-n>: Indicates that you can specify up to n next hops. The value for n is 2.

Usage guidelines

You can specify multiple next hops for backup or load sharing in one command line or by executing this command multiple times.

With a next hop specified, the undo apply next-hop command removes the next hop.

Without any next hop specified, the undo apply next-hop command removes all next hops.

Examples

# Set a directly-connected next hop of 1.1.1.1.

<Sysname> system-view

[Sysname] policy-based-route aa permit node 11

[Sysname-pbr-aa-11] apply next-hop 1.1.1.1 direct

Related commands

ip policy-based-route-log enable

apply output-interface

Use apply output-interface to set output interfaces.

Use undo apply output-interface to remove output interfaces.

Syntax

apply output-interface { interface-type interface-number [ track track-entry-number ] }&<1-n>

undo apply output-interface [ { interface-type interface-number }&<1-n> ]

Default

No output interface is set.

Views

Policy node view

Predefined user roles

network-admin

Parameters

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

track track-entry-number: Specifies a track entry by its number in the range of 1 to 1024.

&<1-n>: Indicates that you can specify up to n interfaces.

Usage guidelines

You can specify multiple output interfaces for backup or load sharing in one command line or by executing this command multiple times.

The output interface must be P2P type. Using a non-P2P output interface can result in forwarding failures when the interface has multiple next hops. Non-P2P interfaces include broadcast and NBMA interfaces such as Ethernet and virtual-template interfaces.

With an output interface specified, the undo apply output-interface command removes the output interface.

Without any output interface specified, the undo apply output-interface command removes all output interfaces.

Examples

# Specify GigabitEthernet 1/0/12 as the output interface for IP packets.

<Sysname> system-view

[Sysname] policy-based-route aa permit node 11

[Sysname-pbr-aa-11] apply output-interface gigabitethernet 1/0/12

Related commands

apply loadshare

display ip policy-based-route

Use display ip policy-based-route to display PBR policy information.

Syntax

display ip policy-based-route [ policy policy-name ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

policy policy-name: Specifies a policy by its name, a case-sensitive string of 1 to 19 characters. If you do not specify a policy, this command displays information for all PBR policies.

Examples

# Display all policy information.

<Sysname> display ip policy-based-route

Policy name: aaa

  node 1 permit:

    if-match acl 2000

    apply next-hop 1.1.1.1 (active)

    apply next-hop 2.2.2.2 (active)

Table 1 Command output

Field

Description

node 1 permit

The match mode of Node 1 is permit.

if-match acl

Compares packets with the ACL.

apply next-hop (active)

Specifies a next hop for permitted packets. This field also displays the state of the next hop.

·     active—The next hop is reachable.

·     inactive—The next hop is unreachable.

 

Related commands

policy-based-route

display ip policy-based-route interface

Use display ip policy-based-route interface to display interface PBR configuration and statistics.

Syntax

display ip policy-based-route interface interface-type interface-number [ slot slot-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

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

slot slot-number: Specifies an IRF member device by its member ID. If you do not specify a member device, this command displays interface PBR configuration and statistics on the master device.

Examples

# Display PBR configuration and statistics on GigabitEthernet 1/0/12.

<Sysname> display ip policy-based-route interface gigabitethernet 1/0/12

Policy based routing information for interface GigabitEthernet1/0/12(failed):

Policy name: aaa

  node 0 deny:

  Matched: 0, bytes: 0

  node 1 permit:

    if-match acl 3999

  Matched: 0, bytes: 0

  node 2 permit:

    if-match acl 2000

    apply next-hop 2.2.2.2 (active)

  Matched: 0, bytes: 0

  node 5 permit:

    if-match acl 3101

    apply next-hop 1.1.1.1 (active)

  Matched: 0, bytes: 0

Total matched: 0, total bytes: 0

<Sysname> display ip policy-based-route interface gigabitethernet 1/0/12

Policy based routing information for interface GigabitEthernet1/0/12:

Policy name: aaa

  node 0 deny:

  Matched: 0, bytes: 0

  node 1 permit:

    if-match acl 3999

  Matched: 0, bytes: 0

  node 2 permit:

    if-match acl 2000

    apply next-hop 2.2.2.2 (active)

  Matched: 0, bytes: 0

  node 5 permit:

    if-match acl 3101

    apply next-hop 1.1.1.1 (active)

  Matched: 0, bytes: 0

Total matched: 0, total bytes: 0

Table 2 Command output

Field

Description

Policy based routing information for interface xxxx

PBR configuration and statistics on the interface.

This field displays failed in brackets if none of the nodes in the policy has been successfully issued to the driver. The failed status will persist after the policy is successfully issued. To clear the failed status, you must remove the policy from the interface and then apply it on the interface again.

NOTE:

The failed status is available on a per-slot basis. To obtain this information, you must specify a slot number when you execute the command.

·     For a global interface, which might have member physical interfaces on multiple slots, specify a slot that contains its member interfaces.

·     For a physical interface, specify its slot number.

node 0 deny

node 2 permit

Match mode of the node, permit or deny.

If a node fails to be issued to the driver, the command displays the cause in brackets, which include:

·     not support—The device does not support the match criteria configured on the node.

·     no resource—No sufficient resources (for example, ACLs) are available for the node.

NOTE:

The cause is available only on a per-slot basis. To obtain this information, you must specify a slot number when you execute the command.

·     For a global interface, which might have member physical interfaces on multiple slots, specify a slot that contains its member interfaces.

·     For a physical interface, specify its slot number.

if-match acl

Compares packets with the ACL.

apply next-hop (active)

Specifies a next hop for permitted packets. This field also displays the state of the next hop.

·     active—The next hop is reachable.

·     inactive—The next hop is unreachable.

Matched: 0

Number of successful matches on the node. If the device does not have sufficient resources to count matches, this field displays no statistics resource in brackets.

If the device does not support counting successful matches on a node, this field displays N/A.

If match counting is disabled on the node, this field is not displayed.

NOTE:

The statistics collection failure cause is available only on a per-slot basis. To obtain this information, you must specify a slot number when you execute the command.

·     For a global interface, which might have member physical interfaces on multiple slots, specify a slot that contains its member interfaces.

·     For a physical interface, specify its slot number.

bytes:

Number of matching bytes on the node.

This field displays N/A if the device does not support counting matching bytes on a node.

This field is not displayed if match counting is disabled on the node.

Total matched

Total number of successful matches on all nodes.

This field displays N/A if the device does not support counting successful matches on a node.

This field is not displayed if match counting is disabled on all nodes.

total bytes:

Total number of matching bytes on all nodes.

This field displays N/A if the device does not support counting matching bytes on a node.

This field is not displayed if match counting is disabled on all nodes.

 

Related commands

reset ip policy-based-route statistics

display ip policy-based-route local

Use display ip policy-based-route local to display local PBR configuration and statistics.

Syntax

display ip policy-based-route local [ slot slot-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

slot slot-number: Specifies an IRF member device by its member ID. If you do not specify a member device, this command displays local PBR configuration and statistics on the master device.

Examples

# Display local PBR configuration and statistics.

<Sysname> display ip policy-based-route local

Policy based routing information for local:

Policy name: aaa

  node 0 deny:

  Matched: 0, bytes: 0

  node 1 permit:

    if-match acl 3999

  Matched: 0, bytes: 0

  node 2 permit:

    if-match acl 2000

    apply next-hop 2.2.2.2 (active)

  Matched: 0, bytes: 0

  node 5 permit:

    if-match acl 3101

    apply next-hop 1.1.1.1 (active)

  Matched: 0, bytes: 0

Total matched: 0, total bytes: 0

Table 3 Command output

Field

Description

Policy based routing information for local

Local PBR configuration and statistics.

node 0 deny/node 2 permit

Match mode of the node: permit or deny.

if-match acl

Compares packets with the ACL.

apply next-hop (active)

Specifies a next hop for permitted packets. This field also displays the state of the next hop.

·     active—The next hop is reachable.

·     inactive—The next hop is unreachable.

Matched: 0

Number of successful matches on the node.

This field displays N/A if the device does not support counting successful matches on a node.

This field is not displayed if match counting is disabled on the node.

bytes:

Number of matching bytes on the node.

This field displays N/A if the device does not support counting matching bytes on a node.

This field is not displayed if match counting is disabled on the node.

Total matched

Total number of successful matches on all nodes.

This field displays N/A if the device does not support counting successful matches on a node.

This field is not displayed if match counting is disabled on all nodes.

total bytes:

Total number of matching bytes on all nodes.

This field displays N/A if the device does not support counting matching bytes on a node.

This field is not displayed if match counting is disabled on all nodes.

 

Related commands

reset ip policy-based-route statistics

display ip policy-based-route setup

Use display ip policy-based-route setup to display PBR configuration.

Syntax

display ip policy-based-route setup

Views

Any view

Predefined user roles

network-admin

network-operator

Examples

# Display PBR configuration.

Policy name              Type     Interface

aaa                      Forward  GigabitEthernet1/0/12

aaa                      Forward  GigabitEthernet1/0/13

aaa                      Local    N/A

Table 4 Command output

Field

Description

Type

Type of the PBR:

·     Forward—Interface PBR.

·     Local—Local PBR.

Interface Name

Interface where the policy is applied.

 

Related commands

ip policy-based-route

if-match acl

Use if-match acl to set an ACL match criterion.

Use undo if-match acl to restore the default.

Syntax

if-match acl { acl-number | name acl-name }

undo if-match acl

Default

No ACL match criterion is set.

Views

Policy node view

Predefined user roles

network-admin

Parameters

acl-number: Specifies an ACL by its number in the range of 2000 to 2999 for a basic ACL, and in the range of 3000 to 3999 for an advanced ACL.

name acl-name: Specifies an ACL by its name, a case-insensitive string of 1 to 63 characters starting with a letter. The ACL name cannot be all.

Examples

# Configure Node 11 of policy aa to permit the packets matching ACL 2011.

<Sysname> system-view

[Sysname] policy-based-route aa permit node 11

[Sysname-pbr-aa-11] if-match acl 2011

# Configure Node 11 of policy aa to permit the packets matching ACL aaa.

<Sysname> system-view

[Sysname] policy-based-route aa permit node 11

[Sysname-pbr-aa-11] if-match acl name aaa

ip local policy-based-route

Use ip local policy-based-route to specify a policy for local PBR.

Use undo ip local policy-based-route to restore the default.

Syntax

ip local policy-based-route policy-name

undo ip local policy-based-route

Default

No policy is specified for local PBR.

Views

System view

Predefined user roles

network-admin

Parameters

policy-name: Specifies a policy by its name, a case-sensitive string of 1 to 19 characters. The specified policy must already exist.

Usage guidelines

Local PBR guides the forwarding of locally generated packets, such as ICMP packets generated by using the ping command.

Local PBR might affect local services, such as ping and Telnet. When you use local PBR, make sure you fully understand its impact on local services of the device.

You can specify only one policy for local PBR and must make sure the specified policy already exists.

Before you apply a new policy, you must first remove the current policy.

Examples

# Configure local PBR based on policy aaa.

<Sysname> system-view

[Sysname] ip local policy-based-route aaa

Related commands

display ip policy-based-route setup

policy-based-route

ip policy-based-route

Use ip policy-based-route to specify a policy for interface PBR on an interface.

Use undo ip policy-based-route to restore the default.

Syntax

ip policy-based-route policy-name

undo ip policy-based-route

Default

No policy is applied to an interface.

Views

Interface view

Predefined user roles

network-admin

Parameters

policy-name: Specifies a policy by its name, a case-sensitive string of 1 to 19 characters. The specified policy must already exist.

Usage guidelines

You can apply only one policy to an interface. Before you apply a new policy, you must first remove the current policy from the interface.

Examples

# Apply policy aaa to GigabitEthernet 1/0/12.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/12

[Sysname-GigabitEthernet1/0/12] ip policy-based-route aaa

Related commands

display ip policy-based-route setup

policy-based-route

ip policy-based-route-log enable

Use ip policy-based-route-log enable to enable the PBR logging feature.

Use undo ip policy-based-route-log enable to disable the PBR logging feature.

Syntax

ip policy-based-route-log enable

undo ip policy-based-route-log enable

Default

The PBR logging feature is disabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

The PBR logging feature helps the administrator locate and fix faults. The feature logs PBR events and sends the logs to the information center. The information center processes the logs according to output rules. For more information about the information center, see Network Management and Monitoring Configuration Guide.

Excessive PBR log messages degrade the performance of the device. To avoid this problem, disable the PBR logging feature.

Examples

# Enable the PBR logging feature.

<Sysname> system-view

[Sysname] ip policy-based-route-log enable

Related commands

apply next-hop

policy-based-route

policy-based-route

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

Use undo policy-based-route to delete a policy or policy node.

Syntax

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

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

Default

No policy nodes exist.

Views

System view

Predefined user roles

network-admin

Parameters

policy-name: Specifies a policy by its name, a case-sensitive string of 1 to 19 characters.

deny: Specifies the match mode for the policy node as deny.

permit: Specifies the match mode for the policy node as permit (default mode).

node node-number: Specifies a policy node by its number. A smaller number has a higher priority. The value range for the node-number argument is 0 to 255.

Usage guidelines

A policy that has been applied to an interface or locally cannot be deleted. To delete it, you must first cancel the application.

·     If a policy node is specified, the undo policy-based-route command deletes the specified policy node.

·     If a match mode is specified, the command deletes all nodes configured with the match mode.

·     If no policy node or match mode is specified, the command deletes the whole policy.

Examples

# Create permit-mode of Node 10 for policy policy1 and enter its view.

<Sysname> system-view

[Sysname] policy-based-route policy1 permit node 10

[Sysname-pbr-policy1-10]

Related commands

display ip policy-based-route

ip policy-based-route-log enable

reset ip policy-based-route statistics

Use reset ip policy-based-route statistics to clear PBR statistics.

Syntax

reset ip policy-based-route statistics [ policy policy-name ]

Views

User view

Predefined user roles

network-admin

Parameters

policy policy-name: Specifies a policy by its name, a case-sensitive string of 1 to 19 characters. If you do not specify a policy, this command clears PBR statistics for all policies.

Examples

# Clear all PBR statistics.

<Sysname> reset ip policy-based-route statistics

Related commands

display ip policy-based-route interface

display ip policy-based-route local

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