BGP advertised-routes question

Unanswered Question
Jul 1st, 2010


I still do not understand how BGP advese the routes.

I have logged into B router and it advices b class address to external link A router with eBGP:




which from iBGP in another internal router, C router, and 111.222.333.0/24 is a interface in B router.

if the link between B and C down, than what will happen for route will it dispear, or it still existed becase of is existed?

Any comments will be appreicated

Thanks in advace


I have this problem too.
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Richard Burts Thu, 07/01/2010 - 23:21


BGP can only advertise routes which are present in the routing table of the local router. If the link to router C goes down and if there is not anything that will maintain the route for in the routing table of router B then BGP will withdraw the advertisement for




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