The MPLS-OPS Archive

["Bob Arthurs" <bob_arthurs@hotmail.com>]

I'm not at all biased, but I'd also recommend 'Traffic Engineering with 
MPLS' - very comprehensive :)



>From: "Eric Osborne" <eosborne@cisco.com>
>To: "Sundeep Singh" <singh0de@ee.iitb.ac.in>, mpls-ops@mplsrc.com
>Subject: Re: [MPLS-OPS]: beginner's query
>Date: Thu, 20 May 2004 09:51:20 -0400
>
>On Thu, 20 May 2004 10:15:29 +0530 (IST), Sundeep Singh  
><singh0de@ee.iitb.ac.in> wrote:
>
>>Hi,
>>I fail to understand the format of the "Path message" as specified in RFC
>>3209. what does the different types of brackets signify?
>
>That stuff is written in Backus-Naur Form (BNF):
>
>http://cui.unige.ch/db-research/Enseignement/analyseinfo/AboutBNF.html
>
>
>>And say i wish to reserve 10kbps of bandwidth for a particular FEC, how  
>>is
>>this conveyed using a Path message?
>
>This is signalled in the SENDER_TSPEC.  On a cisco box:
>
>*Dec 23 17:57:17.029:  SENDER_TSPEC         type 2 length 36:
>*Dec 23 17:57:17.029:   version=0, length in words=7
>*Dec 23 17:57:17.029:   Token bucket fragment (service_id=1, length=6 words
>*Dec 23 17:57:17.029:     parameter id=127, flags=0, parameter length=5
>*Dec 23 17:57:17.029:     average rate=1250 bytes/sec, burst depth=1000  
>bytes
>*Dec 23 17:57:17.029:     peak rate   =1250 bytes/sec
>*Dec 23 17:57:17.029:     min unit=0 bytes, max pkt size=4294967295 bytes
>
>average rate==peak rate==1250 Bytes/sec==10,000 bits/sec==10Kbps
>
>Exactly where to put the BW isn't well specified, so it was a source of  
>confusion during the early days of TE, but seems to have all settled down  
>now.
>
>>Also is there some good reference other than the RFC, where i can look  
>>for
>>a better understanding of RSVP-TE.
>
>I can wholeheartedly recommend "Traffic Engineering with MPLS" by Osborne  
>& Simha, but I'm perhaps a little biased in that area. :)
>
>
>
>eric
>
>>Thanks,
>>Sundeep.
>
>
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