Subject: [Diffserv] Tunnels Draft: What's Changed

From: [email-masked]
Date: Wed, 1 Mar 2000 08:55:26 -0500

Here's a summary of what changed from the tunnels draft
presented in DC (draft-black-diffserv-tunnels-00.txt)
to the new WG version (draft-ietf-diffserv-tunnels-00.txt):

- Removed the notion of using a DSCP of 0 as an escape
	value in one IP header of a tunneled packet to
	indicate that decapsulation should use the
	DSCP value in the other.
- Reworked the text to try to make it clearer that
	traffic conditioning operating on the outer
	header, and prior or subsequent to the tunnel
	is logically independent of tunnel encap/decap.
- Added a few words on VPN as an example of the pipe
	model.
- Use "intermediate" rather than "interior" to refer
	to tunnel nodes between ingress and egress.
- Added a recommendation that tunnels support requiring
	traffic exiting a tunnel to go through diffserv
	traffic conditioning.

Lots of other editorial changes (e.g., SIIT is now an RFC).

Many thanks to Jyrki Soini for comments on the list after
the DC meeting.  There are still issues in the draft 
that need further discussion.

--David

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David L. Black, Senior Technologist
EMC Corporation, 42 South St., Hopkinton, MA  01748
+1 (508) 435-1000 x75140, FAX: +1 (508) 497-6909
[email-masked]  Cellular: +1 (978) 394-7754
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