09-Security Command Reference

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20-uRPF commands
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20-uRPF commands 40.46 KB

IPv4 uRPF commands

display ip urpf

Use display ip urpf to display uRPF configuration.

Syntax

display ip urpf [ 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 uRPF configuration for all member devices.

Examples

# Display uRPF configuration for the specified slot.

<Sysname> display ip urpf slot 1

Global uRPF configuration information(failed):

   Check type: strict

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.

 

ip urpf

Use ip urpf to enable uRPF.

Use undo ip urpf to disable uRPF.

Syntax

ip urpf { loose | strict }

undo ip urpf

Default

uRPF is disabled.

Views

System view

Predefined user roles

network-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.

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

 

 

 

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