BGP Reg Exp

From: Leigh Harrison (ccileigh@gmail.com)
Date: Sun Sep 18 2005 - 04:40:20 GMT-3


All,

If I wanted to allow a neighboring AS(123) and his directly connected
AS's to be seen as routes to me, could this be written as:

ip as-path access-list 1 permit ^123_[0-9]*$
OR
ip as-path access-list 1 permit ^123_.*$
OR
ip as-path access-list 1 permit ^.+_[0-9]*$
OR
ip as-path access-list 1 permit ^.+_.*$
OR
ip as-path access-list 1 permit ^[0-9]+_[0-9]*$
OR
ip as-path access-list 1 permit ^[0-9]+_.*$

Could someone have a quick look and let me know if that would be the
same thing ? I think I'm getting there!! The only niggle in the back
of my mind is ^123_.*$ (for example), would I need a "+" after the 123 ?

Many thanks,
LH



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