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

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 Mon May 21 2012 - 11:01:32 ART