BGP Aggregation Unsuppress Map


John and Jim are setting up their own ISP and start by configuring BGP between their routers. Because they want to make sure not to advertise too many prefixes they want to configure BGP aggregation. It’s up to you to make it happen.


  • All IP addresses have been preconfigured for you.
  • Configure EBGP between router John and Jim. Pick whatever AS you like.
  • Advertise all loopback interfaces on router Jim in BGP.
  • Create a summary for the loopback interfaces on router Jim. Ensure you don’t have any overlapping address space.
  • Ensure you only see the summary on router John with the exception of network /24.

It took me 1000s of hours reading books and doing labs, making mistakes over and over again until I mastered all the protocols for CCNP.

Would you like to be a master of networking too? In a short time without having to read 900 page books or google the answers to your questions and browsing through forums?

I collected all my knowledge and created a single ebook for you that has everything you need to know to become a master of CCNP.

You will learn all the secrets about BGP, External vs Internal BGP and more.

Does this sound interesting to you? Take a look here and let me show you how to Master CCNP ROUTE!




BGP Aggregation Unsuppress Map

Video Solution:

Configuration Files

You need to register to download the GNS3 topology file. (Registration is free!)

Once you are logged in you will find the configuration files right here.

Opt In Image
Do you want your CCNA or CCNP Certificate?

The How to Master series helps you to understand complex topics like spanning-tree, VLANs, trunks, OSPF, EIGRP, BGP and more.

Written by René Molenaar - CCIE #41726

You May Also Like

About the Author: Rene Molenaar

René - CCIE #41726 is the creator of where he shares CCNA, CCNP and CCIE R&S labs. He also blogs about networking on


  1. Hi,

    Wouldn’t an access-list accomplish the same thing? For example:
    access-list 1 permit
    route-map NOTTHISONE PERMIT 10
    match ip address 1
    router bgp 2
    neighbor unsuppress-map NOTHISONE
    Or is there some concept I missed? And on a non-related topic, is the RIB failure something to be concerned about when advertising networks of connecting interfaces from one router only? For example in this lab, were I to advertise the network from only one router, the other router has an RIB failure.


  2. Hi! Thanks for your labs Rene!

    I tried a different approach using the "
    aggregate-address suppress-map NOTTHISONE

    route-map NOTTHISONE permit 10
    match ip address 1

    access-list 1 permit
    access-list 1 permit

    Same results that you got 🙂

    1. aggregate-address suppress-map SUPPRESSED

      ip prefix-list UNSUPPRESS seq 5 permit

      route-map SUPPRESSED deny 10
      match ip address prefix-list UNSUPPRESS

      route-map SUPPRESSED permit 20

      Another same result 😀

  3. I did it a little differently using a simple access-list 1 for network and a match for my route-map. I don’t like using more than one WORD match to bring everything together. Makes my head hurt a little. :p

Comments are closed.