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Forum Replies

  1. Hi bhargavi,

    In our lessons, we used route-map with different routing protocols for routing redistribution and/or filtering. I haven’t found a specific chapter explaining specifically about route-map in our website, but you can see how Rene has used it in different routing protocols on the following 2 lessons:

    EIGRP Route-map Filtering
    OSPF LSA Type 5 Filtering on Cisco IOS

    I can refer you also to this article from Cisco website where you can find all information needed about route-map:

    Route-map explanation from cisco.com

    Hope this can help.

  2. Hi Rene,
    NAT inside source Process, the routing is processed first then NAT.
    in the example i think we do not need the route Map. because every packet pass through the interface will be translated. the following will work.
    please correct me if wrong

    NAT(config)#ip nat inside source list 1  int fa 0/1 overload  
    NAT(config)#ip nat inside source list 1  int fa 1/0 overload 

  3. Hello Mahmoud!

    Your logic makes sense, however, it wouldn’t work as it should. If you insert the second command you have above, the first one will be overwritten. You require a route map in order to determine: which addresses will be NATed, which outside interface these addresses will be routed from and which NAT translation will occur.

    For a proper NAT load balancing configuration with optimized edge routing, take a look at this Cisco support document: http://www.cisco.com/c/en/us/support/docs/ip/network-address-translation-nat/99427-ios-nat-2isp.html

    I hope this has been helpful!


  4. Hi Laz,
    Yes its clear and thanks for the explanation.


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