BGP route tagging

[ngazzano]

I'm new to BGP routing, and my ISP is telling me that I should set up tagging on my primary and backup connections. This is what the network looks like.

7206VXR with DS3 and BGP session to ISP
3640 with 3 DS1 and BGP session to ISP <- backup router/connection.

How can I set this up?

 

[KiscoKid]

BGP prefix tagging is usually required if you want to setup BGP communities. Once a prefix is tagged in this way you can do all manner of things with those prefixes, e.g. prefix filtering, QoS, rate limiting. Traditionally however they were used as a mechanism to control which prefixes should be accepted/denied, set preferences etc.

You'll need to ask them I think what they are trying to achieve by tagging prefixes (I'm kind of surprised they've left it to you to figure out and configure) however the URLs below outlines BGP communties and how they can be used and how to configure it.

http://www.cisco.com/en/US/tech/tk3...note09186a00800c95bb.shtml#communityattribute

http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a00801475b2.shtml

 

[ngazzano]

Thanks for the Links. I figured it out. I just had to add a few neighbor commands and change the route-map to include the community.