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Application Aware LDP Targeted session draft-esale-mpls-appl-aware-ldp-targeted-session-00

draft-esale-mpls-appl-aware-ldp-targeted-session-00. Application Aware LDP Targeted session draft-esale-mpls-appl-aware-ldp-targeted-session-00. Santosh Esale ( sesale@juniper.net ) Raveendra Torvi ( rtorvi@juniper.net ) Chris Bowers ( cbowers@juniper.net ). IETF-90 (Toronto)

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Application Aware LDP Targeted session draft-esale-mpls-appl-aware-ldp-targeted-session-00

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  1. draft-esale-mpls-appl-aware-ldp-targeted-session-00 Application Aware LDP Targeted sessiondraft-esale-mpls-appl-aware-ldp-targeted-session-00 Santosh Esale (sesale@juniper.net)RaveendraTorvi (rtorvi@juniper.net) Chris Bowers (cbowers@juniper.net) IETF-90 (Toronto) speaker: Santosh Esale

  2. draft-esale-mpls-appl-aware-ldp-targeted-session-00 Agenda • -Background • - Problem and Solution • - Use cases • - Protocol extensions

  3. draft-esale-mpls-appl-aware-ldp-targeted-session-00 Background • LDP uses extended discovery to establish a targeted adjacency and subsequent session. • An LSR initiates extended discovery by sending the targeted hello to a remote peer address. • The remote LSR decides either to accept or ignore the hellobased on local configuration only. • For an application such as FEC 128 pseudowire and LDP over RSVP tunneling, the remote LSR is configured with the source LSR address.

  4. draft-esale-mpls-appl-aware-ldp-targeted-session-00 Problem • Applications such as remote LFA and FEC 129 • pseudowireautomatically initiate asymmetric • extended discovery to any LSR in the core network • based on local state only. • Remote LSR responds or ignores all such LDP hello packet. • Lack of administrative control over Targeted LDP session. • Unnecessary advertisement of FEC-Label bindings • over Targeted LDP session.

  5. draft-esale-mpls-appl-aware-ldp-targeted-session-00 Solution - Advertise and negotiate targeted application list during initialization of a targeted session. - Targeted application is mapped to LDP FEC elements to advertise only necessary LDP FEC label bindings over the session.

  6. draft-esale-mpls-appl-aware-ldp-targeted-session-00 Use cases 1. Remote LFA 2. FEC 129 3. LDP over RSVP tunneling

  7. draft-esale-mpls-appl-aware-ldp-targeted-session-00 Protocol Extensions +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |U|F| Targeted App. Cap.(IANA)| Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |S| Reserved | | +-+-+-+-+-+-+-+-+ | | | ~ Targeted App. Cap. data ~ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Targ. Appl. Id|E| Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Refer to the draft for details.

  8. draft-esale-mpls-appl-aware-ldp-targeted-session-00 Next Steps Authors would like to request WG feedback.

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