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Home Documentation Junos OS Junos CLI Reference CLI Reference G

Junos CLI Reference

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Junos CLI Reference
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graceful-restart (Protocols BGP)

date_range 19-Nov-23
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Syntax

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graceful-restart {
    disable;
    restart-time seconds;
    stale-routes-time seconds;
}

Hierarchy Level

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[edit logical-systems logical-system-name protocols bgp],
[edit logical-systems logical-system-name protocols bgp group group-name],
[edit logical-systems logical-system-name protocols bgp group group-name neighbor address],
[edit protocols bgp],
[edit protocols bgp group group-name],
[edit protocols bgp group group-name neighbor address]

Description

Configure graceful restart for BGP. Graceful restart allows a routing device undergoing a restart to inform its adjacent neighbors and peers of its condition. Graceful restart is disabled by default. However, helper mode, the ability to assist a neighboring router attempting a graceful restart, is enabled by default.

To configure the duration of the BGP graceful restart period, include the restart-time statement at the [edit protocols bgp graceful-restart] hierarchy level. To set the length of time the router waits to receive messages from restarting neighbors before declaring them down, include the stale-routes-time statement at the [edit protocols bgp graceful-restart] hierarchy level.

Note:

If you configure graceful restart after a BGP session has been established, the BGP session restarts and the peers negotiate graceful restart capabilities.

Enable graceful restart mode for BGP (and other protocols) by configuring graceful-restart at the routing-options level. Note that you cannot enable graceful restart for specific protocols unless graceful restart is also enabled globally.

For example, this configuration is required to enable graceful restart:

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routing-options {
    graceful-restart 
}

If you want to disable graceful restart for some protocols, you can do this at the protocol’s graceful-restart command. The following configuration along with the configuration above will keep graceful restart for all protocols but BGP.

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protocols{
    bgp{
    graceful-restart;  {
    disable;
}

The remaining statements are explained separately. See CLI Explorer.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

Release Information

Statement introduced before Junos OS Release 7.4.

Related Documentation

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