IGP Routing Protocol Extensions for Discovery of Upstream Label Assignment Node Capability
draft-brevigcia-ccamp-mpls-upstream-node-cap-01
| Document | Type |
Expired Internet-Draft
(individual)
Expired & archived
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|---|---|---|---|
| Authors | Yannick Brehon , Martin Vigoureux , Laurent Ciavaglia , Mohamad Chaitou , Zafar Ali | ||
| Last updated | 2007-11-19 | ||
| RFC stream | (None) | ||
| Intended RFC status | (None) | ||
| Formats | |||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | Expired | |
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
Abstract
This document proposes an extension to [TE-NODE-CAP] in order to support additional TE node capabilities in the context of Point-to- MultiPoint (P2MP) LSP routing and fast reroute protection. As for point-to-point LSP, nesting P2MP LSPs, i.e., MPLS P2MP hierarchy, is a desirable traffic-engineering feature. However, nesting P2MP LSPs requires a mechanism to coordinate the label allocation of the inner P2MP LSP between the egress nodes of the P2MP Tunnel as described in [MPLS-UPSTREAM]. To solve this issue, a new label allocation scheme called Upstream Label Assignment (ULA) is defined. Network elements responsible for the route computation of P2MP LSP should be aware of the nodes that support this functionality. For that purpose, we define a new bit flag to the TE Node Capability Descriptor as defined in [TE-NODE-CAP]. The bit flag (U) enables a node to advertise its capability to accept Upstream Label Assignment.
Authors
Yannick Brehon
Martin Vigoureux
Laurent Ciavaglia
Mohamad Chaitou
Zafar Ali
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)