Re: CCIE SP Mini-Scenarios (New Site)

Hi,
That was a nice illustration of this principle.

But I guess those are the two methods for an LSA type 5. Either
change the tag as Ciprian mentioned or activate "capability vrf-lite"
on the other router R6 as Antonio pointed out.

As far as I have read "capabililty vrf-lite" will disable checking of
the down bit (type-3 LSA) and the domain-tag (type-5 LSA). Is this
correct?

Rgds,
Richard

On Fri, May 21, 2010 at 10:13 AM, Antonio Soares <amsoares_at_netcabo.pt> wrote:
> When you configure the VRFs on R1 and R6, you are making them PE routers as well. So you will need a feature to overcome the OSPF
> issue:
>
> OSPF Support for Multi-VRF on CE Routers
>
> http://www.cisco.com/en/US/docs/ios/12_0st/12_0st21/feature/guide/ospfvrfl.html
>
> It's also very important to know what to do when the feature is not available ;)
>
>
> Regards,
>
> Antonio Soares, CCIE #18473 (R&S/SP)
> amsoares_at_netcabo.pt
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of ciprian niculescu
> Sent: sexta-feira, 21 de Maio de 2010 1:33
> To: Antonio Soares
> Cc: ccie forum; comserv_at_groupstudy.com
> Subject: Re: CCIE SP Mini-Scenarios (New Site)
>
> Thanks for the site, it's great.
>
> But the help raised more questions, after some good playing around.
>
> I started from the mpls-vpn topo (
> http://www.ccie18473.net/dynamips2/7-mpls-vpn-1.zip), did lots of other
> modifications, but in the end got one that i don't fully understand we it
> don't work. The stortcut modif are:
> - between R1-R2 and R5-R6 put eBGP with the same AS on R1, R6;
> - put as-overide on R2+R5 for R1+R6
> ok ping from R1 to R6
> - add a backlink between R1-R6 (fa0/1) and run ospf on it
> - shut the link R5-R6
> - add a loop50 in vrf RED on R5 + redisp conn in bgp on R5
> - on R1 move all interfaces into a vrf-lite IUB + the ospf and bgp peer
> - on R1 redisp bgp in ospf
> - on R6 move all in vrf-lite IUB (different rd than R1, but same ospf
> process id)
> And :( on R6 i have in the DB the Loop50_R5, but not in routing table
>
> a debug ospf say that the route is ignored beacouse tag is equal VPN tag.
>
> if i change the tag on R1 with a route-map at the redistribution bgp to
> ospf, all is well.
>
> What i get is that is a default looping mechanism in action, but don't
> understand exactlly.
>
> All the modifications in the net and confs can be found here, just say
> import when dynamips starts.
> http://dl.dropbox.com/u/272548/7-mpls-vpn-1-modif.zip
>
> If someone can explain a little and/or point to some documentation that
> explains, it is much appreciate.
>
> Thanks,
>
> Ciprian
>
> P.S. little about me: i'm working on getting my first CCIE, the SP one

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Received on Fri May 21 2010 - 14:26:03 ART