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MPLS PE routers in diff AS

Quick one. Can PE routers in an MPLS cloud running MP-BGP be in diff AS? If yes whats the effect on redisctributes CE routes. Just Curious!

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Re: MPLS PE routers in diff AS

Hello Just,

it is possible to implement MPLS VPN services with an inter-AS model, there are different options to do this.

see

http://www.cisco.com/en/US/docs/ios/mpls/configuration/guide/mp_vpn_connect_asbr_ps6441_TSD_Products_Configuration_Guide_Chapter.html

first level LSPs have to be built end-to-end to provide effective MPLS VPN connectivity for customers from PE nodes of AS1 to PE nodes of AS2 and viceversa.

BGP with labels can be used for label exchange on ASBR routers at border links.

Hope to help

Giuseppe

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