Liaison statement
Liaison on creating a globally unique ICC for MPLS-TP (ref # 057.01)

State Posted
Posted Date 2011-07-28
From Group mpls
From Contact Loa Andersson
To Group ITU-T-SG-15
To Contacts
Response Contact
Technical Contact
Purpose For action
Deadline 2011-09-30 Action Taken
Attachments (None)
ITU-T SG 15 for Action

ITU-T SG2 for Information

As we informed ITU-T in a recent liaison (ref # 056.01) the MPLS working group

as part of MPLS-TP adopted draft-ietf-mpls-tp-itu-t-identifiers-00 as a
group document.

The purpose of this document is to specify how MPLS-TP objects can be
identified using identifiers based on ITU-T Carrier Codes (ICCs). The
intention is to advance this document for publication as an RFC that
can be referenced from ITU-T MPLS-TP Recommendations.

In the course of this work we have found that we need globally unique
identifiers and we understand that the ICC is not globally unique.

Can you please confirm to us that ICCs are guaranteed unique within a country,

and that combining an ICC with a country code is an appropriate way to use 
produce a globally unique identifier. Please also indicate to us the ITU-T 
Recommendations that we can use as normative references in support of this 

Loa Andersson
George Swallow
Ross Callon

MPLS Working Group co-chairs