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Title : Mandatory Features of Virtual Circuit Connectivity Verification Implementations
Author(s) : V. Manral, N. Del Regno
Filename : draft-delregno-pwe3-vccv-mandatory-features-01.txt
Pages : 9
Date : 2010-4-25
Pseudowire Virtual Circuit Connectivity Verification (VCCV) [RFC5085]
defines several Control Channel (CC) Types for MPLS PW's for Virtual
Circuit Connectivity Verification, none of which are preferred or
mandatory. As a result, independent implementations of different
subsets of the three options have resulted in interoperability
challenges. In the RFC5085 the CV type of LSP Ping is made the
default for MPLS PW's and ICMP Ping is made optional. This however,
is a reccomendation and not a requirement for implementations which
can lead to interoperability challenges.
To enable interoperability between implementations, this document
defines a subset of control channels that is considered mandatory for
VCCV implementation. This will ensure that VCCV remains the valuable
tool it was designed to be in multi-vendor, multi-implementation and
multi-carrier networks. This document also states requirements for
the CV type too.
This draft is specific to MPLS PW's and not L2TPv3 PW. For the
L2TPv3 PW only one CC and CV type are specified and the issues raised
in this draft do not arise.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-delregno-pwe3-vccv-mandatory-features-01.txt
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