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  • 1.  eBGP policy and ACL in interface

    Posted 11-18-2016 09:52

    Hi Anyone can answer the question? Two routers (RouterA and B) have eBGP connection. RouterA sends the routes 10.0.0.0 and 20.0.0.0 to routerB. The routerB’ interface allow 10.0.0.0 in and routerB’ eBGP allow 20.0.0.0 in. My question is which route can come into the routerB? Thank you



  • 2.  RE: eBGP policy and ACL in interface
    Best Answer

    Posted 11-19-2016 06:00

    I'm not sure that I understand the question.  I think you are asking that if we have an ACL on an interface for blocking traffic, will that ACL have any affect on the ability of the eBGP peer to receive a route prefix of the same subnet from a neighbor.

     

    This answer would be the ACL will NOT block the advertisement but would block the actual traffic.

     

    to block the advertisement you would need to change the import policy on the recieving peer or the export policy on the sending peer.



  • 3.  RE: eBGP policy and ACL in interface

    Posted 11-23-2016 08:45

    Thank you. you are right