From: Brian Dennis (brian@labforge.com)
Date: Fri Feb 21 2003 - 13:31:06 GMT-3
Try it as shown below.
route-map 1-AND-2 permit 10
match as-path 1
match as-path 2
This means that it must match as-path 1 AND 2. If it was written as:
route-map 1-AND-2 permit 10
match as-path 1 2
It means match 1 OR 2. You could also try this regular expression:
ip as-path access-list 3 permit (_123_)|(_456_)
Brian Dennis, CCIE #2210 (R&S/ISP Dial/Security)
brian@labforge.com
http://www.labforge.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Ram Shummoogum
Sent: Friday, February 21, 2003 6:41 AM
To: csmith@plannetconsulting.com
Cc: ccielab@groupstudy.com
Subject: RE: AS PATH AND
I have tried what you suggested and it does not work.
It is behaving like a OR.
I change 456 to a non-existent one and it still passes the filter.
Cheers,
RAM
"Cassidy D. Smith" <csmith@plannetconsulting.com>@groupstudy.com on
02/21/2003 04:31:32 AM
Please respond to "Cassidy D. Smith" <csmith@plannetconsulting.com>
Sent by: nobody@groupstudy.com
To: "'Cezar Fistik'" <cfistik@moldovacc.md>, <ccielab@groupstudy.com>
cc:
Subject: RE: AS PATH AND
The problem is that they are in different order, so a single as-path acl
won't work. Have you tried doing multiple matches in a route-map ? In
other
words you create to as-path acl's and then match on both, this should
create
your "and". If you try this please let us know if it works..
-------example---------------------------
IP as-path access-list 1 _123_
IP as-path access-list 2 _456_
Route-Map 1-AND-2 permit 10
match as-path 1 2
Route-Map 1-AND-2 deny 20
--------end example--------------------
Cassidy
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Cezar
Fistik
Sent: Thursday, February 20, 2003 10:24 PM
To: ccielab@groupstudy.com
Subject: Re:
Hi,
I don't know if there si an "and" in regular expressions, never heard of
it. In order to match AS123 AND AS456 you can try using the following
expressoin:
123.*456
Regards,
Cezar Fistik
----- Original Message -----
From: "Ram Shummoogum" <rshummoo@ca.ibm.com>
To: <ccielab@groupstudy.com>
Sent: Thursday, February 20, 2003 10:34 PM
> Hi ALL:
>
>
> I need some help on this BGP regular expression.
>
>
> Make a router only accept routes that has transit AS 123 and AS 456.
The
> keyword here is "and" and not or.
>
>
> Ex: {34 5 6 456 7 99 123 88}
> {45 123 89 456 7}
>
>
>
>
>
> I know "OR" is | but what is AND.
>
>
>
>
>
> Thanks for your help
>
>
> RAM
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