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[IP-Optical] GMPLS - Hierarchies

  • From: Heiles Juergen <Juergen.Heiles@icn.siemens.de>
  • Date: Thu, 14 Dec 2000 10:57:15 +0100
  • X-MIME-Autoconverted: from quoted-printable to 8bit by cell.onecall.net id EAA10780

Hi Maarten

> -----Original Message-----
> From:	Maarten Vissers [SMTP:mvissers@lucent.com]
> Sent:	Monday, December 11, 2000 10:45 AM
> To:	mpls@UU.NET; ip-optical@lists.bell-labs.com
> Subject:	Re: [IP-Optical] GMPLS - Hierarchies
> 
> Neil, Nuno,
> 
> I get the impression that a LSP is being used for both the trail and a
> tandem connection (subnetwork connection). But also as a tributary slot
> identifier. 
	[Heiles Juergen]  The label switched path (LSP) represents a connection/trail while the label itself represents a tributary slot identifier. You have to distinguish between the two.

	[Heiles Juergen]  One other point. In the transport network architecture we distinguish between network connection and trail. Basically the trail is the network connection + end-to-end supervision (e.g .connectivity, continuity). It is the question if the LSP includes this supervision or if it is just the connection. For example does the LSP automatically activate some kind of supervision in the transport plane at both end points during set-up?

	Jürgen

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