Title:
EXPLICIT ROUTING WITH NETWORK FUNCTION ENCODING
Document Type and Number:
WIPO Patent Application WO/2019/210769
Kind Code:
A1
Abstract:
A method of routing a data packet through a network comprises updating at least one router local forwarding table to include path IDs of network segments defining paths between network nodes and network function bit encoding/decoding information. In response to a data packet arriving at an ingress network node, an encapsulation header including a path ID identifying at least one network segment of an explicit routing path and a bit encoding specifying network functions to be performed on the data packet are encapsulated in unused portions of the source address and/or the destination address in the encapsulation header. A network node in the explicit routing path performs a network function encoded in the source address and/or the destination address of the encapsulation header of the data packet and forwards the data packet based on network function bit encoding/decoding and path ID information in the network node's local updated local forwarding table.
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Inventors:
RETANA ALVARO (US)
LI RENWEI (US)
QU YINGZHEN (US)
LI RENWEI (US)
QU YINGZHEN (US)
Application Number:
PCT/CN2019/082207
Publication Date:
November 07, 2019
Filing Date:
April 11, 2019
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L45/74
Foreign References:
| US20160099864A1 | 2016-04-07 | |||
| US20170237656A1 | 2017-08-17 | |||
| CN105337785A | 2016-02-17 | |||
| CN107579838A | 2018-01-12 |
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