No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Configuration Guide - IP Unicast Routing

S7700 and S9700 V200R010C00

This document describes IP Unicast Routing configurations supported by the switch, including the principle and configuration procedures of IP Routing Overview, Static Route, RIP, RIPng, OSPF, OSPFv3, IS-IS(IPv4), IS-IS(IPv6), BGP, Routing Policy ,and PBR, and provides configuration examples.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Configuring BGP Soft Reset

Configuring BGP Soft Reset

Context

After changing a BGP import policy, you must reset BGP connections for the new import policy to take effect. This, however, interrupts the BGP connections temporarily. BGP route-refresh allows the system to softly reset BGP connections to refresh a BGP routing table without tearing down any BGP connection. If a device's peer does not support route-refresh, configure the device to retain all routing updates received from the peer so that the device can refresh its routing table without tearing down the BGP connection with the peer.

Procedure

  • If a device's peer supports route-refresh, configure the device to softly reset the BGP connection with the peer and update the BGP routing table.

    1. Run:
      system-view

      The system view is displayed.

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

      The BGP view is displayed.

    3. (Optional) Run:
      peer { ipv4-address | group-name } capability-advertise route-refresh
      or run:
      peer ipv6-address capability-advertise { 4-byte-as | route-refresh }

      Route-refresh is enabled.

      By default, route-refresh is enabled.

    4. Run:
      quit

      Return to the system view.

    5. Run:
      quit

      Return to the user view.

    6. Run:
      refresh bgp [ vpn-instance vpn-instance-name ipv4-family | vpnv4 ] { all | ipv4-address | group group-name | external | internal } { export | import }
      or run:
      refresh bgp ipv6 { all | group group-name | ipv4-address | ipv6-address | external | internal } { export | import }

      BGP soft reset is configured.

  • If a device's peer does not support route-refresh, configure the device to retain all routing updates received from the peer so that the device can refresh its routing table without tearing down the BGP connection with the peer.

    1. Run:
      system-view

      The system view is displayed.

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

      The BGP view is displayed.

    3. Enter the corresponding address family view based on network type to configure BGP devices on networks.

      • Run:

        ipv4-family { unicast | multicast }

        The IPv4 address family view is displayed.

      • Run:

        ipv6-family [ unicast ]

        The IPv6 address family view is displayed.

      If the peer keep-all-routes command is used on the device for the first time, the sessions between the device and its peers are reestablished.

      The refresh bgp command takes effect when the peer keep-all-routes command is used on the device supporting route-refresh.

    4. Run:
      peer { ipv4-address | group-name | ipv6-address } keep-all-routes

      The device is configured to store all the routing updates received from its peers or peer groups.

      By default, the device stores only the routing updates that are received from peers or peer groups and match a configured import policy.

Translation
Download
Updated: 2019-08-21

Document ID: EDOC1000141900

Views: 179255

Downloads: 192

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next