When redistributing a tagged route it loses its existing tag by default. The match & set statement is used to ensure a tag is preserved if it was already set at another point of redistribution. The style of route-map below ensures that you NEVER have routing loops if you assign each protocol its own tag and use a policy like this for redistribution every time you redistribute.
On 6/11/09 3:01 AM, "desmond Black" <[email protected]> wrote: > > Although the task seems simple enough it sort of confused me in the sense > that, I can understand that Denying of the tags, but then the MATCH & SET of > the same tag in permit 10 statement as the one below didnt quite get to me. > > R5(config)#route-map E2R deny 5 > R5(config-route-map)#match tag 25 > R5(config-route-map)#route-map E2R permit 10----------| > R5(config-route-map)#match tag 58 > |----------Didnt get this section here > R5(config-route-map)#set tag 58--------------------------| > R5(config-route-map)#route-map E2R permit 15 > R5(config-route-map)#set tag 20 Cheers, Jared Scrivener CCIE3 #16983 (R&S, Security, SP), CISSP Sr. Technical Instructor - IPexpert, Inc. URL: http://www.IPexpert.com Telephone: +1.810.326.1444 Fax: +1.810.454.0130 Mailto: [email protected]
