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Supporting 4-octet AS Number for L2VPN Auto-Discovery

Alexander Vainshtein <Alexander.Vainshtein@ecitele.com> Tue, 02 September 2014 13:49 UTC

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From: Alexander Vainshtein <Alexander.Vainshtein@ecitele.com>
To: "giheron@cisco.com" <giheron@cisco.com>, "nabil.n.bitar@verizon.com" <nabil.n.bitar@verizon.com>
Subject: Supporting 4-octet AS Number for L2VPN Auto-Discovery
Thread-Topic: Supporting 4-octet AS Number for L2VPN Auto-Discovery
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Date: Tue, 2 Sep 2014 13:49:10 +0000
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Hi all,
Section 3.2.2.1 of RFC 6074<http://tools.ietf.org/html/rfc6074> requires encoding of VPN IDs for auto-discovery purposes as Extended BGP Community attribute of BGP.
It further specifies that the following subtypes of extended community can be used for this purpose:

*         2-octet AS specific extended community. To the best of my understanding, if this subtype is used for encoding a L2VPN ID, the provide should use the 2-octet AS number assigned to it as part

*         IP address-specific extended community.

It seems that RFC 6074 does not provide any way to use 4-octet AS numbers for encoding L2VPN IDs. Is this correct?
If yes, are there any plans to augment RFC 6074 in such a way as to facilitate usage of 4-octet AS numbers in l2VPN ID encoding?

Regards, and lots of thanks in advance
       Sasha
Email: Alexander.Vainshtein@ecitele.com
Mobile: 054-9266302

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