simple aggregate-address issue

mguymguy Member Posts: 167 ■■■□□□□□□□
in CCNP



R1
router bgp 1
neighbor 10.0.0.2 remote-as 1
aggregate 12.0.0.0 255.255.252.0

R2
router bgp 1
neighbor 10.0.0.1 remote-as 1

when I do a "show bgp summary" on R2 I am successfully peered but it shows that i'm not receiving any prefixes

I have the following loopbacks configured on R1: 12.0.0.0/24 - 12.0.1.0/24 - 12.0.2.0/24 - 12.0.3.0/24
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Comments

  • networker050184networker050184 Mod Posts: 11,962 Mod
    With the aggregate command the contributing prefixes must be in the BGP table. Sounds like you don't have the loopbacks in the BGP table.
    An expert is a man who has made all the mistakes which can be made.
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  • reloadedreloaded Member Posts: 235
    I believe you're having an issue in which you can't aggregate the routes because you're not announcing those specific loopbacks routes into BGP via network statement or redistribution. Try using "summary-only" at the end of your aggregate line as well, if you want to announce ONLY a summary route to your peer.
    Reloaded~4~Ever
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