Signaling Entropy Label Capability and Readable Label-stack Depth Using OSPF
draft-ietf-ospf-mpls-elc-05
| Document | Type | Expired Internet-Draft (lsr WG) | |
|---|---|---|---|
| Authors | Xiaohu Xu , Sriganesh Kini , Siva Sivabalan , Clarence Filsfils , Stephane Litkowski | ||
| Last updated | 2018-07-16 (Latest revision 2018-01-03) | ||
| Stream | Internet Engineering Task Force (IETF) | ||
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Expired & archived
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| Stream | WG state | WG Document | |
| Document shepherd | (None) | ||
| IESG | IESG state | Expired | |
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https://www.ietf.org/archive/id/draft-ietf-ospf-mpls-elc-05.txt
Abstract
Multiprotocol Label Switching (MPLS) has defined a mechanism to load balance traffic flows using Entropy Labels (EL). An ingress Label Switching Router (LSR) cannot insert ELs for packets going into a given tunnel unless an egress LSR has indicated via signaling that it has the capability of processing ELs, referred to as Entropy Label Capability (ELC), on that tunnel. In addition, it would be useful for ingress LSRs to know each LSR's capability of reading the maximum label stack depth, referred to as Readable Label-stack Depth (RLD), in the cases where stacked LSPs are used for whatever reasons. This document defines mechanisms to signal these two capabilities using OSPF. These mechanisms are useful when the label advertisement is also done via OSPF. In addition, this document introduces the Router Non-OSPF Functional Capabilities TLV for advertising OSPF router's actual non-OSPF functional capabilities. ELC is one of such non-OSPF functional capabilities.
Authors
Xiaohu Xu
Sriganesh Kini
Siva Sivabalan
Clarence Filsfils
Stephane Litkowski
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)