Jim, I am confused here on what u are trying to accomplish. If your target is to make downstream traffic of your client to enter your AS through the 16631 rather than the 701, then what u need to do is prepend the routes received from your client using your AS many times before advertising them inturn to 701. Like this to the rest of the world routes to your client networks through 16631 will appear as a better route than through the prepended routes advertised via 701. Which means that the route map you need to apply will be applied on your 701 neighbor not on the client neighbor.
If u meant the upstream traffic of your client then this is a different story and would take a different approach solving it. Waiting for your feedback. >From: "Jim Devane" > >Hello all, > >Long time lurker, first time poster. > >I have a router that is multi-homed between 16631 and 701. >I have a new client who is buying transit from us. >They are multi-homed to us and 1239. >A business decision was made to policy route their traffic out 16631. >As a result I will only publish 16631 routes to them. >However, if 16631 goes away, I want to be able to push the 701 routes to >them. >Injecting a default wouldn't be very effective here since 1239 will most >likely have a more specific route! >So Conditional Adv to the rescue. However..I have a few questions I am >unsure about and I don't have a lab to try it out on. > >In this config: > >router bgp XXXX >nei New_Client remote-as Client_AS >nei New_Client filter-list 4 in >nei New_Client filter-list 3 out > >ip as path access-list 3 permit .* >ip as-path access-list 4 permit ^Client_AS$ > >so far so good.... >I want to add this... > >nei New_Client advertise-map MAP1 non-exist-map MAP2 > >route-map MAP1 permit 10 >match as-path 5 >route-map MAP2 permit 10 >match as-path 6 > >ip as-path access-list 5 ^$ _16631_ >ip as-path access-list 6 ^$ _701_ > > >SO NOW THE QUESTIONS!!! > >1) What is the order of operation for the advertisement out? Will the >Filter-list showing all routes cancel any effect of the route-map? >2) Are the MAP1 and MAP2 route maps valid in this config because they use >as-path? The config's I could find as example were based on Prefix. I made >up the part about using the as-path, but it seems logical (boy, I wish I had >a couple extra routers!) >3) Is there a better way to go about this! > >Thanks in advance. And thanks to everybody who posts. I have taken away misconduct and Nondisclosure violations to [EMAIL PROTECTED] ------------------------------------------------------------------------ Help STOP SPAM with the new MSN 8 and get 2 months FREE* Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=58527&t=58428 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
