graceful-restart peer-reset (BGP view)

Function

The graceful-restart peer-reset command enables the device to reset a BGP connection in GR mode.

The undo graceful-restart peer-reset command restores the default configuration.

By default, the device is not enabled to reset a BGP connection in GR mode.

Format

graceful-restart peer-reset

undo graceful-restart peer-reset

Parameters

None

Views

BGP view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bgp	write

Usage Guidelines

Usage Scenario

Currently, BGP does not support dynamic capability negotiation. As a result, each time the BGP capability changes, the BGP peer relationship is re-established. For example, a BGP IPv4 unicast peer relationship is established and IPv4 services are running; if the BGP capability changes, the BGP IPv4 unicast peer relationship will be re-established, which interrupts ongoing IPv4 services. To prevent the service interruptions, run the graceful-restart peer-reset command to enable the device to reset a BGP session in GR mode.

If the GR reset function and a new BGP capability are enabled on a BGP speaker, the BGP speaker enters the GR state, resets the BGP session (without deleting the routing entries for the session), and renegotiates BGP capabilities with its peer. Therefore, existing services are not interrupted.

Enable the device to reset a BGP connection in GR mode when establishing BGP peer relationships.

Example

# Enable the device to reset a BGP connection in GR mode.

<HUAWEI> system-view
[~HUAWEI] bgp 100
[*HUAWEI-bgp] graceful-restart
[*HUAWEI-bgp] graceful-restart peer-reset