Internet Engineering Task Force H. Chen
Internet-Draft R. Li
Intended status: Informational Huawei Technologies
Expires: November 5, 2013 G. Cauchie
N. So
Tata Communications
L. Liu
UC Davis
May 4, 2013
Applicability of OSPF Topology-Transparent Zone
draft-chen-ospf-ttz-app-03.txt
Abstract
This document discusses the applicability of "OSPF Topology-
Transparent Zone". It briefs the protocol and its operations first,
and then illustrates the application scenarios of OSPF Topology-
Transparent Zone. In addition, guidelines for deployment are
presented and limitations of the protocol are indicated. This
document is intended for accompanying "OSPF Topology-Transparent
Zone" to the Internet standards track.
Status of this Memo
This Internet-Draft is submitted to IETF in full conformance with the
provisions of BCP 78 and BCP 79.
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and may be updated, replaced, or obsoleted by other documents at any
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This Internet-Draft will expire on November 5, 2013.
Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Chen, et al. Expires November 5, 2013 [Page 1]
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Conventions Used in This Document . . . . . . . . . . . . . . 4
4. Overview of Topology-Transparent Zone . . . . . . . . . . . . 4
4.1. Definitions of Topology-Transparent Zone . . . . . . . . . 4
4.2. An Example of TTZ . . . . . . . . . . . . . . . . . . . . 5
5. Applicability of Topology-Transparent Zone . . . . . . . . . . 7
5.1. TTZ for Network Scaling . . . . . . . . . . . . . . . . . 7
5.2. One Area Network . . . . . . . . . . . . . . . . . . . . . 8
5.2.1. Issues on Splitting Network into Areas . . . . . . . . 8
5.2.2. Use of TTZ in One Area Network . . . . . . . . . . . . 10
5.3. Multi-Area Network . . . . . . . . . . . . . . . . . . . . 11
5.3.1. Issues on Splitting Network into More Areas . . . . . 12
5.3.2. Use of TTZ in Multi-Area Network . . . . . . . . . . . 13
5.4. Use of TTZ on Routers in IPRAN . . . . . . . . . . . . . . 14
5.5. Use of TTZ on Routers in POP . . . . . . . . . . . . . . . 15
5.6. Use of TTZ on Routers from Same Vendor . . . . . . . . . . 15
5.7. Use of TTZ on Routers in a Power Saving Group . . . . . . 16
6. Deployment Considerations . . . . . . . . . . . . . . . . . . 16
7. Limitations . . . . . . . . . . . . . . . . . . . . . . . . . 16
8. Security Considerations . . . . . . . . . . . . . . . . . . . 16
9. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 16
10. Acknowledgement . . . . . . . . . . . . . . . . . . . . . . . 17
11. References . . . . . . . . . . . . . . . . . . . . . . . . . . 17
11.1. Normative References . . . . . . . . . . . . . . . . . . . 17
11.2. Informative References . . . . . . . . . . . . . . . . . . 17
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 18
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