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Forum Replies

  1. Hello Rene, will enable soft-reconfiguration take a lot of memory from my router? And what happens if i want the adj-rib-in to sync again with the loc-rib? Do i have to remove the command and do hard reset?

  2. Hi Mauro,

    Yes but it depends on the number of prefixes that you receive from your neighbor. Since you are saving an extra copy of each table that you receive, you’ll need extra memory. 100 prefixes won’t make the difference but storing entire internet routing tables will.

    It’s best to use “soft refresh” if your router supports it instead of soft reconfiguration.

    I’m not sure if disabling soft reconfiguration is enough or if we also have to reset the BGP neighbor before it takes effect. I’d have to try that…

    Rene

  3. Hi Davis,

    When you don’t have soft configuration configured then that command will use the route refresh:

    R1#clear ip bgp 192.168.12.2 soft in

    Here’s what you will see:

    R1#
    BGP: 192.168.12.2 sending REFRESH_REQ(5) for afi/safi: 1/1, refresh code is 0
    BGP: 192.168.12.2 rcv message type 5, length (excl. header) 4
    BGP: 192.168.12.2 rcvd REFRESH_REQ for afi/safi: 1/1, refresh code is 1
    BGP: 192.168.12.2 rcv message type 5, length (excl. header) 4
    BGP: 192.168.12.2 rcvd REFRESH_REQ for afi/safi: 1/1, refresh code is 2
    

    About the commands:

    • clear ip bgp x.x.x.x in: Soft reconfig inbound updates
    • clear ip bgp x.x.x.x out: Soft reconfig outbound updates
    • clear ip bgp x.x.x.x soft: Soft reconfig inbound + outbound updates
    • clear ip bgp x.x.x.x soft in: Soft reconfig inbound updates
    • clear ip bgp x.x.x.x soft out: Soft reconfig outbound updates

    When you don’t have soft reconfiguration enabled, it will use a route refresh instead.

    Rene

  4. Hi Paul,

    You are 100% correct, just fixed these errors. Thanks!

    Rene

  5. Hi Rene and Team,

    Is the adj-RIB-In-In table for each neighbor static, as in it doesn’t dynamically update once it is initially populated when neighbor first comes up?

    If we want to repopulate the adj-RIB-In can this only be done with a hard reset?

    Thanks

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