Re: How to verify triple layer label stack in Inter-AS option C

Another great way to do this is via packet capture, if that is
feasible. It's nice being able to see the format of the headers and
each label in the stack.

-Yuri

On Mon, May 21, 2012 at 9:01 AM, Brian McGahan <bmcgahan_at_ine.com> wrote:
> Debug the packets in the data plane and you'll see the entire label stack. In IOS this is "debug mpls packet".
>
>
> HTH,
>
> Brian McGahan, CCIE #8593 (R&S/SP/Security)
> bmcgahan_at_INE.com
>
> Internetwork Expert, Inc.
> http://www.INE.com
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of jeremy co
> Sent: Sunday, May 20, 2012 8:15 PM
> To: Cisco certification
> Subject: How to verify triple layer label stack in Inter-AS option C LSP
>
> Hi,
>
>
> I've been struggling to verify label stack in inter-as option c.
>
>
> VPN label can be verified with "sh ip bgp vpnv4 all labels" at PE.
> outer label can be verified on P routers.
>
> How to verify IPV4 label (middle label) or the whole stack on P routers?
>
> Please refer below for OptionC explanation for how LSP being constructed.
>
> http://www.juniper.net/techpubs/en_US/junose10.0/information-products/topic-collections/swconfig-bgp-mpls/inter-as-option-c.html
> http://www.huawei.com/products/datacomm/catalog.do?id=1495
>
>
>
> Is there anyway to verify label stack on say P routers and see all 3 labels that has been assigned all the way ?
>
> Thanks.
>
>
> Jeremy
>
>
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Received on Wed May 23 2012 - 12:58:02 ART