IS-IS Extensions to Support Transport Network Slices using Segment Routing
draft-zch-lsr-isis-network-slicing-06
Networking Working Group Y. Zhu
Internet-Draft China Telecom
Intended status: Standards Track R. Chen
Expires: March 9, 2021 S. Peng
ZTE Corporation
F. Qin
China Mobile
September 05, 2020
IS-IS Extensions to Support Transport Network Slices using Segment
Routing
draft-zch-lsr-isis-network-slicing-06
Abstract
[I-D.nsdt-teas-ns-framework] provides a framework of transport
slices.
This draft describes the IS-IS extensions required to support
transport slices using Segment Routing.
Status of This Memo
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Conventions used in this document . . . . . . . . . . . . . . 3
3. Router Capabilities for TN-slice Identifier . . . . . . . . . 3
4. Advertising TN-slice Identifier as a new TE parameter of a
link . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4.1. Advertising Dedicated Bandwidth Resouce of a Link for
Each VN . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1.1. Unidirectional Residual Bandwidth per TN-slice
Identifier Sub-TLV . . . . . . . . . . . . . . . . . 6
4.1.2. Unidirectional Available Bandwidth per TN-slice
Identifier Sub-TLV . . . . . . . . . . . . . . . . . 7
4.1.3. Unidirectional Utilized Bandwidth per TN-slice
Identifier Sub-TLV . . . . . . . . . . . . . . . . . 8
5. Advertising TN-slice Identifier for L2 Bundle Member . . . . 8
5.1. Advertising Bandwidth Information of member Link . . . . 9
6. Advertising prefix-SID per TN-slice Identifier . . . . . . . 9
7. Advertising Adjacency-SID per TN-slice Identifier . . . . . . 11
8. Advertising Adjacency-SID per TN-slice Identifier in LANs . . 12
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 13
9.1. Router Capabilities for TN-slice Identifier . . . . . . . 13
9.2. TN-slice Identifier list sub-TLV . . . . . . . . . . . . 13
9.3. Unidirectional Residual Bandwidth per TN-slice Identifier
Sub-TLV . . . . . . . . . . . . . . . . . . . . . . . . . 13
9.4. Unidirectional Available Bandwidth per TN-slice
Identifier Sub-TLV . . . . . . . . . . . . . . . . . . . 14
9.5. Unidirectional Utilized Bandwidth per TN-slice Identifier
Sub-TLV . . . . . . . . . . . . . . . . . . . . . . . . . 14
9.6. L2 Bundle Member TN-slice Identifier sub-TLV . . . . . . 14
9.7. Prefix-SID for TN-slice Identifier sub-TLV . . . . . . . 14
9.8. Adjacency-SID for TN-slice Identifier sub-TLV . . . . . . 14
9.9. LAN-Adj-SID for TN-slice Identifier sub-TLV . . . . . . . 14
10. Security Considerations . . . . . . . . . . . . . . . . . . . 15
11. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 15
12. References . . . . . . . . . . . . . . . . . . . . . . . . . 15
12.1. Normative references . . . . . . . . . . . . . . . . . . 15
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