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Configuration Guide - IP Unicast Routing

CloudEngine 12800 and 12800E V200R002C50

This document describes the configurations of IP Unicast Routing, including IP Routing, Static Route, RIP, RIPng, OSPF, OSPFv3, IPv4 IS-IS, IPv6 IS-IS, BGP, Routing Policy, and PBR.

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Configuring the BGP GR Function

Configuring the BGP GR Function


BGP restart causes peer relationship reestablishment and traffic interruption. Graceful restart (GR) ensures uninterrupted traffic interruption in the case of BGP restart.


Currently, devices support only the GR helper function, and the GR restarter function is implemented using non-stop routing (NSR). NSR does not need to be configured.


  1. Run system-view

    The system view is displayed.

  2. Run bgp { as-number-plain | as-number-dot }

    The BGP view is displayed.

  3. Run graceful-restart

    BGP GR is enabled.

    By default, BGP GR is disabled.

  4. (Optional) Run graceful-restart timer wait-for-rib timer

    The time during which the restarting speaker and receiving speaker wait for End-of-RIB messages is set.

    By default, the time for waiting for End-of-RIB messages is 600 seconds.

  5. (Optional) Run graceful-restart peer-reset

    The device is enabled to reset a BGP session in GR mode.

    By default, a device is disabled from resetting a BGP connection in GR mode.

  6. (Optional) Run graceful-restart timer restart time

    The maximum delay to reestablish a BGP session after a peer detects the restart of the local device is set.

    By default, the maximum delay to reestablish a BGP session after a peer detects the restart of the local device is 150 seconds.

  7. Run commit

    The configuration is committed.

Verifying the Configuration

  • Run the display bgp peer verbose command to check detailed information about BGP GR.

Updated: 2019-03-21

Document ID: EDOC1000166601

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