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Multiple BGP AS numbers on 1 router?

jdoolin
Level 1
Level 1

I have a customer consolidating two WAN routers into one. The one router will have connections to two ISPs. They want to keep their two previous AS numbers. I do not believe it is possible to run multiple AS numbers on one router, but how would I handle this problem? Customer is asking about different BGP views. Any insight would be appreciated.

2 Replies 2

Harold Ritter
Cisco Employee
Cisco Employee

John Paul,

You can do that using the local-as feature. You will have to use multi-VRF If you want your customers to have separate routing tables.

http://www.cisco.com/en/US/docs/ios/12_3t/ip_route/command/reference/ip2_n1gt.html#wp1098123

Regards,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México

John Paul,

Sorry I misread your question. It is one customer, so no need for multi VRF. You will need to use local-as though.

Regards,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
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