Presentation is loading. Please wait.

Presentation is loading. Please wait.

1 AII Types for Aggregation draft-metz-aii-aggregate-01.txt Chris Metz, Luca Martini,

Similar presentations


Presentation on theme: "1 AII Types for Aggregation draft-metz-aii-aggregate-01.txt Chris Metz, Luca Martini,"— Presentation transcript:

1 1 AII Types for Aggregation draft-metz-aii-aggregate-01.txt Chris Metz, chmetz@cisco.comchmetz@cisco.com Luca Martini, lmartini@cisco.comlmartini@cisco.com Florin Balus, balus@nortel.combalus@nortel.com Jeff Sugimoto, sugimoto@nortel.comsugimoto@nortel.com Vacouver IETF Nov. 2005

2 2 Changes from -00 Added PWid AII Type (Type 1) –compatibility with L2VPN signaling draft –FEC129 signaling support of attachment circuits provisioned with 32-bit identifier (i.e. PWid from FEC128) Short and Long Prefix AII Type fields adjustments: –Global ID is 6 bytes in length (big enough to accommodate 2 and 4 octet ASN or IPv6 /48 as global identifiers) –flags field removed Removed aggregation examples Streamlined text

3 3 PWid AII Type (Type 1) 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | AII Type=01 | Length | PWid | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | PWid (contd.) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Used where provisioning model required fixed- length 32-bit AII value –draft-ietf-l2vpn-signaling-06.txt –FEC129 signaling of older PWid-configured attachment circuits –section 2.1 of draft

4 4 Short Prefix AII Type (Type 2) 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | AII Type=02 | Length | Global ID | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Global ID (contd.) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Prefix | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | AC ID | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Used where provisioning model (e.g. inter-domain VPWS) permits distribution of AII aggregates prior to PWE3 signaling –reduced scaling burden on AII distribution mechanisms (e.g. MP- BGP) and PE memory –section 2.2 of draft

5 5 Long Prefix AII Type (Type 3) 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | AII Type=03 | Length | Global ID | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Global ID (contd.) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | | Prefix | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Same use as Short Prefix except: –larger prefix field (256 bits vs 32 bits); no AC ID –offers greater numbering flexibility given larger prefix field –section 2.3 of draft

6 6 Next Steps Synced up with L2VPN signaling and dynamic MS-PW placement drafts We need PWid AII Type for sure … and we need Prefix-based AII Types (Short, Long or both) Adopt as PWE3 WG document


Download ppt "1 AII Types for Aggregation draft-metz-aii-aggregate-01.txt Chris Metz, Luca Martini,"

Similar presentations


Ads by Google