We're Sorry, Full Content Access is for Members Only...

If you like to keep on reading, Become a Member Now! Here is Why:

  • Learn any CCNA, CCNP and CCIE R&S Topic. Explained As Simple As Possible.
  • Try for Just $1. The Best Dollar You've Ever Spent on Your Cisco Career!
  • Full Access to our 637 Lessons. More Lessons Added Every Week!
  • Content created by Rene Molenaar (CCIE #41726)

 

374 New Members signed up the last 30 days!

satisfaction-guaranteed

100% Satisfaction Guaranteed!
You may cancel your monthly membership at any time.
No Questions Asked!

Tags:


Forum Replies

  1. Hi Rene,
    Just to be confirm , If we put the command aggregate-address 172.16.0.0 255.255.0.0 summary-only as-set on R1 then R2/R3 also get the prefix & discard based on as path , right ?Thanks

    br//zaman

  2. Hi Rene
    is there a incorrect that is the As name.
    where is the AS 3 ,in my opinion R3 will be in the AS 3

  3. Hello Laz
    thanks all
    i m lucky because if laz is here no problem

  4. I’m trying this exercise using 3 routers. R1-R2 iBGP peers, and R2-R3 eBGP peers.
    i’ve configured a loopback interface on R1, 10.10.10.10/32 and on R2 i want to aggregate that /32 network in a /24 to R3 using the “aggregate-address 10.10.10.0 255.255.255.0” cli conf but i get this error ::
    % BGP: Incorrect network or mask configurated

    I’ve also tried with 255.0.0.0 and i get the same error on R2

    Also i’ve checked with “show ip bgp” on R2 and the 10.10.10.10/32 is correctly injected in BGP table.

  5. Hello Juan

    In order to use the aggregate-address command to send an aggregate of 10.10.10.0/24, the corresponding loopback with an IP address within that range must be configured on the same router itself. The router will check your command against the IP addresses on the interfaces on the device and not against the BGP table. The problem is not the subnet mask, but the IP address that is not on a local interface.

    Without having actually implemented the lab, my feeling is that If you want to issue the aggregate command, do so in R1. Try it out and let us know your results!

    Laz

4 more replies! Ask a question or join the discussion by visiting our Community Forum