From: Brian (signal@xxxxxxxxxx)
Date: Mon Jun 18 2001 - 02:06:00 GMT-3
Well, for one the diagram was a bit more involved than what I simplified,
but announcing routes to AS200 with a route-map using ^$ would be
something you would do on R3. Once again, the objective said to only
mess with R2, so thus the no-export route-map.
It should be noted however, that I found I had to mess with more than R2.
When you set no-export on routes learned from AS300, and then use
"send-community" on the iBGP session to R1 (the route reflector)......R1
does not pass on the community info to R3 without specifing
"send-community" on R1 as well. So even within the AS/iBGP send-community
has to be set each hop of the way. And since R2 doesn't peer directly to
R3, but rather via the RR R1, you have to modify 2 routers to pass the
no-export to R3.
Brian
On Sun, 17 Jun 2001, Jon Carmichael wrote:
> Is there a reason why you can't use a regular expression?
>
> Something along the lines of a route-map that matches an as-path access-list
> that matches the regular expression ^$ meaning don't allow this AS to be a
> transit.
>
> Just a thot you can investigate, and let me know if that was the solution.
>
> JONC
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Brian
> Sent: Sunday, June 17, 2001 7:25 PM
> To: ccielab@groupstudy.com
> Subject: CCIE Practice Kit Scenerio 1 Question
>
>
> I have a question regarding scenerio 1 in the CCIE
> Lab Practice Kit.
>
> Step 46 is:
>
> "Under no circunstances can AS100 be used as a transit network for AS200
> to reach AS300. To acomplish this, no additional configurations should
> be added to any router other than R2."
>
>
>
>
>
> R4-AS200------R5-AS200 R6-AS300
> \ / /
> \ / /
> \ / /
> \ / /
> \/ /
> R3-AS100 R2-AS100
> \ /
> \ /
> \ /
> \ /
> \ /
> \ /
> \ /
> \ /
> \ /
> \ /
> \ /
> R1-AS100
> Route-Reflector
>
>
>
> To me, the obvious is just set a route map on R2
> to set community no-export on learned routes from R6.
>
> But when you read the solution, they start telling
> you to do this and that with R3. Yet the objective
> specifically said to mess with R2 only. Anyone else
> experience this when doing this scenerio?
>
> Brian
>
> -----------------------------------------------
> I'm buying / selling used CISCO gear!!
> email me for a quote
>
> Brian Feeny,CCDP,CCNP+VAS Scarlett Parria
> signal@netjam.net scarlett@netjam.net
> 318-213-4709 318-213-4701
>
> Netjam, LLC http://www.netjam.net
> 333 Texas St. VISA/MC/AMEX/COD
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> **Please read:http://www.groupstudy.com/list/posting.html
-----------------------------------------------
I'm buying / selling used CISCO gear!!
email me for a quote
Brian Feeny,CCDP,CCNP+VAS Scarlett Parria
signal@netjam.net scarlett@netjam.net
318-213-4709 318-213-4701
Netjam, LLC http://www.netjam.net
333 Texas St. VISA/MC/AMEX/COD
Suite 1401 30 day warranty
Shreveport, LA 71101 Cisco Channel Partner
toll free: 866-2NETJAM
phone: 318-212-0245
fax: 318-212-0246
**Please read:http://www.groupstudy.com/list/posting.html
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