Definition of ACH TLV Structure draftbryantmplstpachtlv01 txt Stewart

Definition of ACH TLV Structure draft-bryant-mpls-tp-ach-tlv-01. txt {Stewart Bryant, Sami Boutros, , Sivabalan, George Swallow, David Ward} @ Cisco Systems

Goals of Draft • At the Ipswich MPLS-TP editors meeting decided to split the contents of the previous version of this draft between draft-ietf-mpls-tp-gach-gal-02 and this draft. • draft-ietf-mpls-tp-gach-gal-02 described how the TLV is carried in the ACH • This draft defines a number of TLVs that are common across the MPLS-TP project. • As the authors of MPLS-TP drafts identify the need for TLVs that will be used by multiple drafts they will be included in this text.

Source Address 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Ach. Tlv. Type = 1 | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ~ Address | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Destination address is similar (type=2)

LSPI and PWI • LSP identifier and PW Identifier need to be defined in next version. • These need to include SA, DA, Instance, Other fields TBD

Address 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Add. Type = 1 | Length = 4 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | IPv 4 Address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Higher level object (which may be stand alone protocol object or a TLV) will define the existence of address TLV, but using TLV allows the instance to use the appropriate address type. Currently only define IPv 4 and IPv 6 What other address types to we need?

What next? • What other TLVs are needed? • Please supply definition ready for cut and paste here • Authors propose that this is accepted as a MEAD team document standardized thought the PWE 3 WG.