11-Security Command Reference

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18-uRPF commands
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18-uRPF commands 49.97 KB

IPv4 uRPF commands

display ip urpf

Use display ip urpf to display uRPF configuration.

Syntax

In standalone mode:

display ip urpf [ slot slot-number ]

In IRF mode:

display ip urpf  [ chassis chassis-number slot slot-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

slot slot-number: Specifies a card by its slot number. If you do not specify a card, this command displays uRPF configuration for all cards. (In standalone mode.)

chassis chassis-number slot slot-number: Specifies a card on an IRF member device. The chassis-number argument represents the member ID of the IRF member device. The slot-number argument represents the slot number of the card. If you do not specify a card, this command displays uRPF configuration for all cards. (In IRF mode.)

Examples

# (In standalone mode.) Display uRPF configuration for the specified slot.

<Sysname> display ip urpf slot 1

Global uRPF configuration information(failed):

   Check type: strict

   Allow default route

Table 1 Command output

Field

Description

(failed)

The system failed to deliver the uRPF configuration to the forwarding chip because of insufficient chip resources.

This field is not displayed if the delivery is successful.

Check type

uRPF check mode: loose or strict.

Allow default route

Using the default route is allowed.

 

ip urpf

Use ip urpf to enable uRPF.

Use undo ip urpf to disable uRPF.

Syntax

ip urpf { loose [ allow-default-route ] | strict [ allow-default-route ] }

undo ip urpf

Default

uRPF is disabled.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

loose: Enables loose uRPF check. To pass loose uRPF check, the source address of a packet must match the destination address of a FIB entry.

strict: Enables strict uRPF check. To pass strict uRPF check, the source address and receiving interface of a packet must match the destination address and output interface of a FIB entry. You can enable strict uRPF check only in VLAN interface view.

allow-default-route: Allows using the default route for uRPF check.

Usage guidelines

uRPF can be deployed on a PE connected to a CE or an ISP, or on a CE.

Examples

# Enable strict uRPF check globally.

<Sysname> system-view

[Sysname] ip urpf strict

Related commands

display ip urpf

 


IPv6 uRPF commands

display ipv6 urpf

Use display ipv6 urpf to display IPv6 uRPF configuration.

Syntax

In standalone mode:

display ipv6 urpf  [ slot slot-number ]

In IRF mode:

display ipv6 urpf  [ chassis chassis-number slot slot-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

slot slot-number: Specifies a card by its slot number. If you do not specify a card, this command displays IPv6 uRPF configuration for all cards. (In standalone mode.)

chassis chassis-number slot slot-number: Specifies a card on an IRF member device. The chassis-number argument represents the member ID of the IRF member device. The slot-number argument represents the slot number of the card. If you do not specify a card, this command displays IPv6 uRPF configuration for all cards. (In IRF mode.)

Examples

# (In standalone mode.) Display IPv6 uRPF configuration for the specified slot.

<Sysname> display ipv6 urpf slot 1

Global IPv6 uRPF configuration information(failed):

   Check type: strict

   Allow default route

Table 2 Command output

Field

Description

(failed)

The system failed to deliver the IPv6 uRPF configuration to the forwarding chip because of insufficient chip resources. This field is not displayed if the delivery is successful.

Check type

IPv6 uRPF check mode: loose or strict.

Allow default route

Using the default route is allowed.

 

ipv6 urpf

Use ipv6 urpf to enable IPv6 uRPF.

Use undo ipv6 urpf to disable IPv6 uRPF.

Syntax

ipv6 urpf { loose | strict } [ allow-default-route ]

undo ipv6 urpf

Default

IPv6 uRPF is disabled.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

loose: Enables loose IPv6 uRPF check. To pass loose IPv6 uRPF check, the source address of a packet must match the destination address of an IPv6 FIB entry.

strict: Enables strict IPv6 uRPF check. To pass strict IPv6 uRPF check, the source address and receiving interface of a packet must match the destination address and output interface of an IPv6 FIB entry.

allow-default-route: Allows using the default route for IPv6 uRPF check.

Usage guidelines

IPv6 uRPF can be deployed on a CE or on a PE connected to either a CE or an ISP.

Examples

# Enable strict IPv6 uRPF check globally.

<Sysname> system-view

[Sysname] ipv6 urpf strict

Related commands

display ipv6 urpf

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