Marking SIP Messages to be Logged
draft-ietf-insipid-logme-marking-01
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2015-01-28
(latest revision 2014-08-28)
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WG Document
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Gonzalo Salgueiro
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"Gonzalo Salgueiro" <gsalguei@cisco.com>
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Internet Engineering Task Force P. Dawes
Internet-Draft Vodafone Group
Intended status: Standards Track August 28, 2014
Expires: March 1, 2015
Marking SIP Messages to be Logged
draft-ietf-insipid-logme-marking-01
Abstract
SIP networks use signalling monitoring tools to diagnose user
reported problems and for regression testing if network or user agent
software is upgraded. As networks grow and become interconnected,
including connection via transit networks, it becomes impractical to
predict the path that SIP signalling will take between user agents,
and therefore impractical to monitor SIP signalling end-to-end.
This document describes an indicator for the SIP protocol which can
be used to mark signalling as of interest to logging. Such marking
will typically be applied as part of network testing controlled by
the network operator and not used in regular user agent signalling.
However, such marking can be carried end-to-end including the SIP
user agents, even if a session originates and terminates in different
networks.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on March 1, 2015.
Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the
document authors. All rights reserved.
Dawes Expires March 1, 2015 [Page 1]
Internet-Draft log me marking August 2014
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 3
3. Motivating Scenario . . . . . . . . . . . . . . . . . . . . . 3
4. Skeleton Diagnostic Procedure . . . . . . . . . . . . . . . . 4
5. Protocol for Log-Me Marking . . . . . . . . . . . . . . . . . 5
5.1. Configuration for Log-Me Marking . . . . . . . . . . . . 5
5.2. Starting and Stopping Log-Me Marking . . . . . . . . . . 5
5.3. End Points of Log-Me Marking . . . . . . . . . . . . . . 6
5.3.1. Originating and Terminating User Agent . . . . . . . 6
5.3.2. Originating Edge Proxy and Terminating Edge Proxy . . 7
5.4. Maintaining State . . . . . . . . . . . . . . . . . . . . 7
5.5. Missing Log-me Marker in Dialog Being Logged . . . . . . 9
5.6. Logging Multiple Simultaneous Dialogs . . . . . . . . . . 10
5.7. Forked Requests . . . . . . . . . . . . . . . . . . . . . 10
5.8. B2BUA Handling of Log-Me Marked Dialogs . . . . . . . . . 10
5.8.1. All B2BUA Roles . . . . . . . . . . . . . . . . . . . 10
5.8.2. Proxy-B2BUA . . . . . . . . . . . . . . . . . . . . . 10
5.8.2.1. Terminating Behaviour . . . . . . . . . . . . . . 10
5.8.3. Signaling-only and SDP-Modifying Signaling-only . . . 11
5.8.3.1. Terminating Behaviour . . . . . . . . . . . . . . 11
5.8.3.2. Originating Behaviour . . . . . . . . . . . . . . 11
5.8.4. Media Relay, Media Aware, Media Termination . . . . . 11
5.9. 'Log-Me' Marker . . . . . . . . . . . . . . . . . . . . . 11
5.9.1. Header Field Parameter for Session-ID . . . . . . . . 11
5.9.2. Identifying Test Cases . . . . . . . . . . . . . . . 12
6. Security Considerations . . . . . . . . . . . . . . . . . . . 12
6.1. Trust Domain . . . . . . . . . . . . . . . . . . . . . . 12
6.2. Security Threats . . . . . . . . . . . . . . . . . . . . 12
6.2.1. The Log-Me Marker . . . . . . . . . . . . . . . . . . 12
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