Title:
PATH ESTABLISHMENT METHOD AND CONTROLLER
Document Type and Number:
WIPO Patent Application WO/2017/193569
Kind Code:
A1
Abstract:
A path establishment method and a controller, the method comprising: when detecting a path establishment request for establishing P2MP TE, calculating a P2MP TE path by using head node information and tail node information comprised in the path establishment request, the P2MP TE path comprising at least one branch node and at least two tail nodes; identifying a target branch node in the P2MP TE path and obtaining a label of the target branch node, the target branch node being a branch node in the at least one branch node; and when a third node corresponding to the head node information and the target branch node are not the same node, sending first information to the third node and sending second information to the target branch node, the first information being used for instructing the third node to encapsulate path information and the label in a packet when receiving the packet, the path information being used for instructing the third node to forward the encapsulated packet according to the path information, and the second information being used for instructing the target branch node to generate a multicast forwarding table entry. Embodiments of the present application can reduce the complexity of P2MP TE path establishment.
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Inventors:
WANG FENGMEI (CN)
LONG YONG (CN)
CHEN XIA (CN)
LONG YONG (CN)
CHEN XIA (CN)
Application Number:
PCT/CN2016/108233
Publication Date:
November 16, 2017
Filing Date:
December 01, 2016
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L45/02; H04L45/121; H04L45/125; H04L45/16; H04L45/50
Domestic Patent References:
| WO2011160498A1 | 2011-12-29 |
Foreign References:
| CN105827529A | 2016-08-03 | |||
| CN103873378A | 2014-06-18 | |||
| CN102142969A | 2011-08-03 |
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