ToS-like processing of the IPv6 Traffic Class?

[Merike Kaeo]

Here's two pointers that may help:

http://www.juniper.net/techpubs/en_US/junos9.4/topics/concept/cos-ipv6-protocols-overview-solution.html

http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-qos.html  [especially the troubleshooting part]

It's been a few years since I dealt with configuring and knowing how to deal with buffers and queueing but  I think you did have to specify explicitly how you'd want the queueing to be handled - there wasn't just a default 'allow strict precedence queueing'.  

And while I'd agree that using same policies and configurations for IPv4/IPv6 will reduce operational headaches and confusion, I'd be curious to know if some people out there ARE using different QoS configurations for application traffic going over v4 vs v6 and why.

- merike


On Sep 22, 2010, at 1:49 AM, Fernando Gont wrote:

> Hi, folks,
> 
> I'm told that many deployments of IPv6 use the RFC 791 ToS (Type of
> Service) semantics/definitions for the IPv6 Traffic Class field, e.g.
> allowing strict precedence queuing.
> 
> Can anybody confirm this?
> 
> If this is the case, does this thing have to be explicitly enabled, or
> is it the "default" behavior in some implementations?
> 
> Thanks!
> 
> Kind regards,
> -- 
> Fernando Gont
> e-mail: fernando at gont.com.ar || fgont at acm.org
> PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1
> 
> 
> 
>