poison-reverse enable

Function

The poison-reverse enable command enables IP FRR poison reverse.

The undo poison-reverse enable command disables IP FRR poison reverse.

By default, IP FRR poison reverse is disabled.

Format

poison-reverse enable

undo poison-reverse enable

Parameters

None

Views

100GE interface view, 10GE interface view, 25GE interface view, 40GE interface view, 50GE interface view, Eth-Trunk sub-interface view, Eth-Trunk interface view, GE sub-interface view, GE electrical interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
forwarding	write

Usage Guidelines

Usage Scenario

On an IP ring network with IP FRR, the poison-reverse enable command is used to prevent instantaneous traffic storms caused by the route convergence. For configurations details, see Configuration-BGP/MPLS IP VPN Configuration-Configuring Private Network IP FRR.

Configuration Impact

After you enable poison reverse, inter-VLAN proxy ARP does not take effect.

Precautions

In load balancing scenarios, poison reverse does not take effect.

Example

# Enable IP FRR poison reverse on GE 0/1/16.

<HUAWEI> system-view
[~HUAWEI] interface GigabitEthernet0/1/16
[*HUAWEI-GigabitEthernet0/1/16] poison-reverse enable