From: Curt Gregg \(cugregg\) (cugregg@cisco.com)
Date: Thu Feb 15 2007 - 15:07:34 ART
Question:
Wouldn't these two expressions be the same or you trying to match
anything originating in AS 54?
ip as-path access-list 1 permit ^54$
^ = start of a line
or
ip as-path access-list 1 permit _54$
_ = beginning of the line (or end of the line or a space)
Wouldn't _54$ also be considered the end of the path or originating AS
as the as-path describes the AS systems it has passed thru beginning
with the most recent and ending with the originating AS.
In this case AS 54 is the directly connected AS.
Are there pros or cons to using either or?
TIA
Curt
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