nexthop recursive-lookup restrain disable

Function

The nexthop recursive-lookup restrain disable command disables BGP recursion suppression in case of next hop flapping.

The undo nexthop recursive-lookup restrain disable command enables BGP recursion suppression in case of next hop flapping.

By default, BGP recursion suppression in case of next hop flapping is enabled.

Format

nexthop recursive-lookup restrain disable

undo nexthop recursive-lookup restrain disable

Parameters

None

Views

BGP-IPv4 unicast address family view, BGP-IPv6 unicast address family view, BGP-Labeled address family view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bgp	write

Usage Guidelines

Usage Scenario

If a large number of routes recurse to the same next hop that flaps frequently, the system will be busy processing changes of these routes, which consumes excessive system resources and leads to high CPU usage. To address this problem, configure BGP recursion suppression in case of next hop flapping. If you do not care about whether the system is busy processing route selection and advertisement and the possible high CPU usage, run the nexthop recursive-lookup restrain disable command to disable BGP recursion suppression in case of next hop flapping.

Example

# Disable BGP recursion suppression in case of next hop flapping in the BGP-Labeled address family view.

<HUAWEI> system-view
[~HUAWEI] bgp 100
[*HUAWEI-bgp] ipv4-family labeled-unicast
[*HUAWEI-bgp-af-ipv4-labeled] nexthop recursive-lookup restrain disable

# Disable BGP recursion suppression in case of next hop flapping in the BGP-IPv4 unicast address family view.

<HUAWEI> system-view
[~HUAWEI] bgp 100
[*HUAWEI-bgp] ipv4-family unicast
[*HUAWEI-bgp-af-ipv4] nexthop recursive-lookup restrain disable