Re: [Pppext] TRILL, IS-IS, and System ID
Stewart Bryant <stbryant@cisco.com> Thu, 02 June 2011 10:44 UTC
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Date: Thu, 02 Jun 2011 11:44:36 +0100
From: Stewart Bryant <stbryant@cisco.com>
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To: William Allen Simpson <william.allen.simpson@gmail.com>
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Cc: PPP Extensions <pppext@ietf.org>, rbridge@postel.org
Subject: Re: [Pppext] TRILL, IS-IS, and System ID
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On 01/06/2011 17:37, William Allen Simpson wrote: > On 6/1/11 12:10 PM, Stewart Bryant wrote: >> On 01/06/2011 16:50, James Carlson wrote: >>> Stewart Bryant wrote: >>>>> All that said, I don't really care. This is a tempest in a teapot. I >>>>> can mash together both texts if the Routing ADs are willing to >>>>> accept a >>>>> passing reference here to a draft that, in their words, hasn't >>>>> even been >>>>> considered by the IS-IS community. >>>> James, >>>> >>>> I believe that any departure from the text in ISO10589 needs >>>> to be discussed in the ISIS WG. > > Please point to the text in ISO10589 on configuring System Identifiers. > > Quote the section and page. The following text: ISO/IEC 10589:2002(E) Page15 7.1.4 Administration and deployment of systems in a routeing domain "It is the responsibility of the routeing domain administrative authority to enforce the requirements stated below in this clause" ISO/IEC 10589:2002(E) Page16 section (a) point 2 "Each system in an area must have an unambiguous ID; that is, no two systems (IS or ES) in an area may use the same ID value." ISO/IEC 10589:2002(E) Page16 section (b) point 1 "Each Level 2 Intermediate system within a routeing domain must have an unambiguous value for its ID field; that is, no two level 2 ISs in a routeing domain can have the same value in their ID fields." ISO/IEC 10589:2002(E) Page148 Informational Annex B.1.1.3 The identifier (id) field para 3 "Second, a considerable savings can be obtained in manual address administration for all systems in the routeing domain. If the ID is chosen from the ISO 8802 48-bit address space (represented as a sequence of 6 octets as specified in ISO/IEC 10039), the ID is known to be globally unique. Furthermore, since LAN systems conforming to ISO 8802 often have their 48-bit MAC address stored in ROM locally, each system can be guaranteed to have a globally unambiguous NET and NSAP(s) without centralised address administration at the area level2). This not only eliminates administrative overhead, but also drastically reduces the possibility of duplicate NSAP addresses, which are illegal, difficult to diagnose, and often extremely difficult to isolate." Seems to fully describe the intent of the authors. > Please point to the text in ISO10589 on autonomously resolving > conflicting > System Identifiers. > > Quote the section and page. The text above seems to make it clear that the specifcation requires resolution at either configuration or manufacturing time. > > Heck, I've not seen any reference to duplicate System Identifiers in > ISO10589 anywhere. Perhaps the standardese escaped my notice? Please see Annex B.1.1.3 Stewart
- [Pppext] TRILL, IS-IS, and System ID James Carlson
- Re: [Pppext] TRILL, IS-IS, and System ID Donald Eastlake
- Re: [Pppext] TRILL, IS-IS, and System ID William Allen Simpson
- Re: [Pppext] TRILL, IS-IS, and System ID Stewart Bryant
- Re: [Pppext] TRILL, IS-IS, and System ID Stewart Bryant
- Re: [Pppext] TRILL, IS-IS, and System ID James Carlson
- Re: [Pppext] TRILL, IS-IS, and System ID Stewart Bryant
- Re: [Pppext] TRILL, IS-IS, and System ID James Carlson
- Re: [Pppext] TRILL, IS-IS, and System ID Stewart Bryant
- Re: [Pppext] TRILL, IS-IS, and System ID William Allen Simpson
- Re: [Pppext] TRILL, IS-IS, and System ID James Carlson
- Re: [Pppext] [rbridge] TRILL, IS-IS, and System ID Les Ginsberg (ginsberg)
- Re: [Pppext] TRILL, IS-IS, and System ID William Allen Simpson
- Re: [Pppext] [rbridge] TRILL, IS-IS, and System ID William Allen Simpson
- Re: [Pppext] [rbridge] TRILL, IS-IS, and System ID Les Ginsberg (ginsberg)
- Re: [Pppext] [rbridge] TRILL, IS-IS, and System ID Vernon Schryver
- Re: [Pppext] [rbridge] TRILL, IS-IS, and System ID Vernon Schryver
- Re: [Pppext] TRILL, IS-IS, and System ID Stewart Bryant
- Re: [Pppext] TRILL, IS-IS, and System ID James Carlson
- Re: [Pppext] TRILL, IS-IS, and System ID Jari Arkko
- Re: [Pppext] [Isis-wg] TRILL, IS-IS, and System ID Christian Hopps