The IESG has approved the following document: - 'LDP Extensions to Support Maximally Redundant Trees' (draft-ietf-mpls-ldp-mrt-07.txt) as Proposed Standard This document is the product of the Multiprotocol Label Switching Working Group. The IESG contact persons are Alvaro Retana, Alia Atlas and Deborah Brungard. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-ldp-mrt/ Technical Summary The document specify an extensions to the Label Distribution Protocol (LDP) that support the creation of label-switched paths for Maximally Redundant Trees (MRT). The most obvious use of MRT is for Fast-Resoute for IP/LDP uni- and multicast. This is referred to as MRT-FRR. This document specifies the ability of LDP to advertise MRT Capability and the associated behavior expected for LSRs (Label Switching Routers) and LERs (Label Edge Routers) advertising the MRT Capability. MRT-FRR uses LDP multi-topology extensions and requires three different multi-topology IDs to be allocated from the MPLS MT-ID space. Working Group Summary The working group supported this document. The progress was a bit slow, since we were waiting for other MRT documents in other working groups. Document Quality We are aware of two prototype implementations of this protocol specification. An implementation poll has been sent out to the working group, as soon as we have more information we will update the shepherd write-up. The document has been through the normal wg process, no other types are necessary. Personnel Who is the Document Shepherd for this document? Loa Andersson Who is the Responsible Area Director? Deborah Brungard
