Title:
PCEP SEGMENT ROUTING PATH SEGMENT LABEL BINDING EXTENSION
Document Type and Number:
WIPO Patent Application WO/2019/007390
Kind Code:
A1
Abstract:
A method to support Segment Routing Traffic Engineering Label Switched Path (SRTE LSP) setup, irrespective of forwarding nodes' limitation on Maximum Segment Depth (MSD) is disclosed. A Path Computation Element (PCE) learns SRIDs (i.e. labels) from all the Path Computation Client (PCCs), as the PCC runs Interior Gateway Protocol (IGP), and maintains the same along with Traffic Engineering DataBase (TEDB). Conventional techniques limit label allocation to just PCE. They do not teach or suggest label allocation by PCC. The subject invention associates the incoming label to outgoing label-stack and label-range used by PCE for the sub-LSP (i.e., part of LSP). The PCE is able to generate label-bindings from a defined label-range (i.e., label-type 3) and send said label-binding to network apparatuses.
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Inventors:
NEGI MAHENDRA SINGH (IN)
KALADHARAN PREJEETH (IN)
KALADHARAN PREJEETH (IN)
Application Number:
PCT/CN2018/094637
Publication Date:
January 10, 2019
Filing Date:
July 05, 2018
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L45/50
Domestic Patent References:
| WO2016102008A1 | 2016-06-30 |
Foreign References:
| US20160308761A1 | 2016-10-20 | |||
| CN106330714A | 2017-01-11 |
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