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Cell Relay Retreat>MPLS-OPS Archive>month:2002-Dec> msg00135



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Re: I need DS-TE reference

  • From: "alok" <alok.dube@apara.com>
  • Date: Mon, 16 Dec 2002 15:59:46 +0530
  • Resent-Date: Mon, 16 Dec 2002 06:49:23 -0500
  • To: =?KS_C_5601-1987?B?yKvI8byu?= <hshong@innet.co.kr>, <mpls-ops@mplsrc.com>

Hi,
 
 
DS-TE is possible end to end when:
 
1. u dont have oversubscribed links
2. u have sufficent b/width to cater to each customer SLA without inet-serv reservations required
3. u may not want to add b/wdith in terms of "assymetric incremements", for example if one link is STM-1 and u need STM-1 +2Mb, u may need to add STM-1+STM-1 in DS-TE models....(someone could clarify on this better i guess) but inetserv models (basically RSVP and OSPF opaque LSAs help here)....someone knowing LDP better could help if the same exists for LDP.
 
the methodology is ...copy the ToS bits on the IP header onto the MPLS header...thats abt it i guess..
 
or simply mark the re define the ToS bits on the MPLS header.
 
so if u have "ample bandwdith" and dont have issues with all of the above, you could look at DiffServ TE, simply the same thing as Diffserv bits usage in IP scenarios.
 
-rgds
Alok
----- Original Message -----
From: 홍희석
Sent: Monday, December 16, 2002 3:16 PM
Subject: [MPLS-OPS]: I need DS-TE reference

 
Hello .. This is Suk
 
I need your help..
 
Can I get some information about reference site  building Diffserv-TE ?
 
What is the standard of classification...
 
Does DS-TE work well  End-to-End ( CE - CE ) ?
 
I am curious how DS-TE is used in real Network .
 
Many Thanks...