Invention Grant
- Patent Title: Using border gateway protocol to expose maximum segment identifier depth to an external application
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Application No.: US16869391Application Date: 2020-05-07
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Publication No.: US11271855B2Publication Date: 2022-03-08
- Inventor: Evgeny Tantsura , Gregory Mirsky
- Applicant: Telefonaktiebolaget LM Ericsson (publ)
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Nicholson, De Vos, Webster & Elliott, LLP
- Main IPC: H04L12/721
- IPC: H04L12/721 ; H04L12/751 ; H04L12/723 ; H04L45/00 ; H04L45/02 ; H04L45/50

Abstract:
A method of exposing a maximum segment identifier depth (MSD) value of the network device is described. The method comprises transmitting to a centralized controller an attribute Type Length Value (TLV). A type of the attribute TLV includes a type of a maximum segment identifier depth (MSD) indicating that the MSD is a link MSD, a length of the attribute TLV includes a length of the MSD, and a value of the attribute TLV includes the MSD, which is a maximum number of segment routing (SR) labels supported at a link of the network node. The centralized controller is to use the attribute TLV to compute an SR tunnel with one or more SR labels, a label stack depth of the SR tunnel does not exceed the MSD, and the SR labels are used for steering a packet through an SR network.
Public/Granted literature
- US20200267079A1 USING BORDER GATEWAY PROTOCOL TO EXPOSE MAXIMUM SEGMENT IDENTIFIER DEPTH TO AN EXTERNAL APPLICATION Public/Granted day:2020-08-20
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