RE: NAT with route-map

From: M S (michaelgstout@hotmail.com)
Date: Tue Jun 05 2007 - 22:02:56 ART


Thanks for the question. I can now question my own notes.
Route maps are used with NAT when you want certin traffic streams to use
certian outside interfaces or if you want certian source to destination
traffic to be natted and not other traffic.
The route-map form of NAT also produces a better sho ip nat translations
output. Configure nat using an access-list and configure the same nat
using an extended access-list and a route-map. Your translation table
will have a different appearence. ( I believe the route-map form of
translation table adds functionallity to the router. It allows the router
to know more about the source and destination translation. This adds
stability ).

http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/hiad_c/ch20/ntbaddrs.htm#wp1048785

  --------------------------------------------------------------------

  From: ccie anees <ccieanees@yahoo.com>
  Reply-To: ccie anees <ccieanees@yahoo.com>
  To: ccielab@groupstudy.com
  Subject: NAT with route-map
  Date: Tue, 5 Jun 2007 16:33:00 -0700 (PDT)
  Hi,

  I don't understand the route-map usage in the nat.

  If I configure the below statement, it it suppose to block ICMP?

  ip nat inside source static 173.1.4.9 10.1.4.4 route-map test1

  access-list 115 permit icmp any any

  route-map test1 deny 10
    match ip address 115

  Thanks,

  Anees.

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