From: Ouellette, Tim (tim.ouellette@xxxxxxx)
Date: Tue Jul 09 2002 - 21:50:47 GMT-3
Keep in mind that the ^$ allows the prefix your originating. Meaning that
the as-path acl is parsed first and then your as # is added to that after.
So really ^$ means a as-sequence with nothing in it because after it gets
matched and going outbound is when your ASN is added to it.
-----Original Message-----
From: Robert Yee [mailto:robert@bluespud.com]
Sent: Tuesday, July 09, 2002 7:51 PM
To: ccielab@groupstudy.com
Subject: Regular expression
Hi all,
Am I correct in my interpreation of the following regular expressions?
.* = everything
^$ = nothing
If the above is true, and I have the following in place:
neighbor x.x.x.x filter-list 1 out
ip as-path access-list 1 permit ^$
Does this mean, that I am filtering all outbound prefixes?
TIA,
Robert
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