Re: [OSPF] Review Request: New Version Notification for draft-hegde-ospf-node-admin-tag-00.txt

Hannes Gredler <hannes@juniper.net> Mon, 21 October 2013 13:52 UTC

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Date: Mon, 21 Oct 2013 15:51:53 +0200
From: Hannes Gredler <hannes@juniper.net>
To: Acee Lindem <acee.lindem@ericsson.com>
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Cc: OSPF List <ospf@ietf.org>, Rob Shakir <rob.shakir@bt.com>, Harish Raghuveer <hraghuveer@juniper.net>
Subject: Re: [OSPF] Review Request: New Version Notification for draft-hegde-ospf-node-admin-tag-00.txt
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On Mon, Oct 21, 2013 at 01:32:54PM +0000, Acee Lindem wrote:
| Hannes, 
| 
| On Oct 21, 2013, at 9:26 AM, Hannes Gredler wrote:
| 
| > acee,
| > 
| > why should we give an upper boundary on things which
| > - might be subject to change and
| > - which have a historic track record of being underestimated.
| 
| You don't have to - just request a separate OSPFv2 opaque LSA and IPv6 OSPFv3 LSA from IANA.
| Another alternative would be to extend the RI LSA to be multi-instance and relegate the variable length tags to an instance other than instance 0. 

again the question why i do have to ?
i can perfectly fit in single-digit as well as a few dozens of colors in a single RI LSA
- what is your concern - except that we may use inappropriate large space for TE ?
any reasonable implementation SHOULD restrict the node color set, such
that overwhelming the 64K of RI LSPs is not going to happen.

| > the 'per-link' admin-groups serve as a good example here:
| > initially conceived as "you won't ever need more than 32" we have
| > now arrived at a variable length (unbounded) extension.
| > 
| > http://tools.ietf.org/html/draft-osborne-mpls-extended-admin-groups-00
| > 
| > for a humorous take to it, have a look at
| > http://tools.ietf.org/html/rfc1925
| > rule (9) and (10)
| > 
| > /hannes
| > 
| > On Oct 21, 2013, at 3:12 PM, Acee Lindem wrote:
| > 
| >> Hi Shraddha, 
| >> Since the size of the tag data is unbounded, could you either put it in a separate OSPFv2 opaque LSA and OSPFv3 LSA or limit the size to some maximum number of tags, e.g., 16?  
| >> Thanks,
| >> Acee 
| >> On Oct 21, 2013, at 7:05 AM, Shraddha Hegde wrote:
| >> 
| >>> Hi All,
| >>> 
| >>> We have posted a draft on " Advertising per-node administrative tags in OSPF" and would like to hear your views on it. Please feel free to raise any suggestion/comment on the content.
| >>> 
| >>> Rgds
| >>> Shraddha
| >>> 
| >>> -----Original Message-----
| >>> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org] 
| >>> Sent: Monday, October 21, 2013 4:24 PM
| >>> To: Harish Raghuveer; Shraddha Hegde; British Telecom; Hannes Gredler; Rob Shakir
| >>> Subject: New Version Notification for draft-hegde-ospf-node-admin-tag-00.txt
| >>> 
| >>> 
| >>> A new version of I-D, draft-hegde-ospf-node-admin-tag-00.txt
| >>> has been successfully submitted by Shraddha Hegde and posted to the IETF repository.
| >>> 
| >>> Filename:	 draft-hegde-ospf-node-admin-tag
| >>> Revision:	 00
| >>> Title:		 Advertising per-node administrative tags in OSPF
| >>> Creation date:	 2013-10-21
| >>> Group:		 Individual Submission
| >>> Number of pages: 6
| >>> URL:             http://www.ietf.org/internet-drafts/draft-hegde-ospf-node-admin-tag-00.txt
| >>> Status:          http://datatracker.ietf.org/doc/draft-hegde-ospf-node-admin-tag
| >>> Htmlized:        http://tools.ietf.org/html/draft-hegde-ospf-node-admin-tag-00
| >>> 
| >>> 
| >>> Abstract:
| >>> This document describes an extension to OSPF protocol [RFC2328] to
| >>> add an optional operational capability, that allows tagging and
| >>> grouping of the nodes in an OSPF domain.  This allows
| >>> simplification,ease of management and control over route and path
| >>> selection based on configured policies.
| >>> 
| >>> This document describes the protocol extensions to disseminate per-
| >>> node admin-tags to the OSPFv2 and OSPFv3 protocols.
| >>> 
| >>> 
| >>> 
| >>> 
| >>> 
| >>> Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org.
| >>> 
| >>> The IETF Secretariat
| >>> 
| >>> 
| >>> 
| >>> _______________________________________________
| >>> OSPF mailing list
| >>> OSPF@ietf.org
| >>> https://www.ietf.org/mailman/listinfo/ospf
| >> 
| >> _______________________________________________
| >> OSPF mailing list
| >> OSPF@ietf.org
| >> https://www.ietf.org/mailman/listinfo/ospf
| >> 
| >> 
| > 
| > 
| 
| 
|