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Both BGP peers use default route for session establishment

Hi:

I know that if both BGP peers use default route to establish the TCP session, the session won't come up. BUt what is the reason behind this?

Thanks in advance for your input :)

Yours Sincerely

Allen Su

1 REPLY
Cisco Employee

Re: Both BGP peers use default route for session establishment

Allen,

The reason is that there is a check in the code preventing the session to be actively opened based on the default route.

This check has been there for a long time and was probably to prevent things such as trying to establish iBGP sessions via a default to the Internet.

Hope this helps,

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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