draft-ietf-isis-purge-tlv-01.txt   draft-ietf-isis-purge-tlv-02.txt 
IS-IS Working Group F. Wei IS-IS Working Group F. Wei
Internet-Draft Y. Qin Internet-Draft Y. Qin
Updates: 5301, 5304, 5310 Z. Li Updates: 5301, 5304, 5310 Z. Li
(if approved) China Mobile (if approved) China Mobile
Intended status: Standards Track T. Li Intended status: Standards Track T. Li
Expires: November 15, 2010 Cisco Systems, Inc. Expires: December 9, 2010 Cisco Systems, Inc.
J. Dong J. Dong
Huawei Technologies Huawei Technologies
May 14, 2010 June 7, 2010
Purge Originator Identification TLV for IS-IS Purge Originator Identification TLV for IS-IS
draft-ietf-isis-purge-tlv-01 draft-ietf-isis-purge-tlv-02
Abstract Abstract
At present an IS-IS purge does not contain any information At present an IS-IS purge does not contain any information
identifying the Intermediate System (IS) that generates the purge. identifying the Intermediate System (IS) that generates the purge.
This makes it difficult to locate the source IS. This makes it difficult to locate the source IS.
To address this issue, this document defines a TLV to be added to To address this issue, this document defines a TLV to be added to
purges to record the system ID of the IS generating it. Since normal purges to record the system ID of the IS generating it. Since normal
LSP flooding does not change LSP contents, this TLV should propagate LSP flooding does not change LSP contents, this TLV should propagate
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on November 15, 2010. This Internet-Draft will expire on December 9, 2010.
Copyright Notice Copyright Notice
Copyright (c) 2010 IETF Trust and the persons identified as the Copyright (c) 2010 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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received the purge from. received the purge from.
This allows ISs receiving purges to log the system ID of the This allows ISs receiving purges to log the system ID of the
originator, or the upstream source of the purge. This makes it much originator, or the upstream source of the purge. This makes it much
easier for the network administrator to locate the origin of the easier for the network administrator to locate the origin of the
purge and thus the cause of the purge. Similarly, this TLV is purge and thus the cause of the purge. Similarly, this TLV is
helpful to developers in lab situations. helpful to developers in lab situations.
The Purge Originator Identification TLV is defined as: The Purge Originator Identification TLV is defined as:
CODE - XX (to be assigned) CODE - 13
LENGTH - total length of the value field. LENGTH - total length of the value field.
VALUE - VALUE -
Number of system IDs carried in this TLV (1 octet) -- Only the Number of system IDs carried in this TLV (1 octet) -- Only the
values 1 and 2 are defined. values 1 and 2 are defined.
System ID of the Intermediate System that inserted this TLV. System ID of the Intermediate System that inserted this TLV.
The system ID of the Intermediate System that the purge was The system ID of the Intermediate System that the purge was
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