RE: _100$ OR ^100$

From: Sharifi, Reza (Reza.Sharifi@gdit.com)
Date: Wed Dec 12 2007 - 18:04:14 ART

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How about Null AS Path "()"
You can use AS Path regular expressions to create a null AS Path that
matches routes that have originated in your AS.

HTH
Reza

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Mohammad Saeed
Sent: Wednesday, December 12, 2007 3:04 PM
To: Cisco certification
Subject: _100$ OR ^100$

Hi,

If I have R1 in AS 50 peering with R2 in AS 100. if I want R1 to learn
routes only originated in AS100 only from R2, which as-path acl will
be correct?

ip as-path access-list 1 match _100$

OR

ip as-path access-list 1 match ^100$

route-map FIL permit 10
match as-path 1

on R1 I apply this route-map incoming to R2

Regards,

Mohammad Zahed Saeed

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