Re: DSCP with GRE?

From: Jim Harrison [MSFT] (jmharr_at_online.microsoft.com)
Date: 06/18/04 

Date: Fri, 18 Jun 2004 14:44:50 -0700

Propagated, perhaps, but not used or managed as would be expected with "real" diffsrv support. 

-- 
 Jim Harrison [ISASE]
 Read the help, books and articles!
 This posting is provided "AS IS" with no warranties, and confers no rights.
"InBan" <InBan@discussions.microsoft.com> wrote in message news:988290CB-C9D1-4C5D-AC45-5F933F087340@microsoft.com...
Apparently the information provided here is incorrect; ToS field is propogated from the internal packet.
"InBan" wrote:
> Thanks for your time, I'll copy the thread into a new post in an RRAS forum.
>
> "Jim Harrison [MSFT]" wrote:
>
> > You're right; this is where I'd direct you to one of our RRAS forums.
> > ...sorry...
> >
> > -- 
> >  Jim Harrison [ISASE]
> >  Read the help, books and articles!
> >
> >  This posting is provided "AS IS" with no warranties, and confers no rights.
> >
> >
> > "InBan" <InBan@discussions.microsoft.com> wrote in message news:4F44C707-BFC7-47DE-BC0B-495B50033FFB@microsoft.com...
> > Well; that is how it was looking to me. Thank You for confirming this.
> >
> > I am still looking for methods of prioritizing VPN traffic. In a multi-site topology where VPN tunnels create the inter-site
> > backbone, a QoS method is essential. Mission critical applications running over WAN links are severely affected by things like 
> > VOIP,
> > NetMeeting, replication and large file transfers. At this point it seems that we need a third party tool to help us accomplish 
> > this,
> > but I am not aware of a product that will integrate well into our existing infrastructure.
> >
> > Another possibility is to find a method to direct different priority traffic over different tunnels; ideally priority would be 
> > based
> > on protocol, rather than user. Then find a method of prioritizing the tunnels themselves. This concept also jives more with my
> > understanding of PPP based tunnels and their requirement for continuity. As I understand it reordering a tunnel’s packets based 
> > on
> > DSCP priority would cause fragmentation that would violate the continuity requirement.
> >
> > Any suggestions on methods or resources on this topic would be greatly appreciated. Are there plans for additional support for
> > various QoS methods in ISA 2004 or future implementations of RRAS?
> >
> > Thank you for responses, I appreciate this discussion may be outside the scope of this forum.
> >
> >
> > "Jim Harrison [MSFT]" wrote:
> >
> > > Nope; RRAS doesn't "get" diffsrv either.
> > >
> > > -- 
> > >  Jim Harrison [ISASE]
> > >  Read the help, books and articles!
> > >
> > >  This posting is provided "AS IS" with no warranties, and confers no rights.
> > >
> > >
> > > "InBan" <InBan@discussions.microsoft.com> wrote in message news:169ADA9C-4293-4F2F-9F81-5F8F438ADBD5@microsoft.com...
> > > Is this possible in RRAS?
> > >
> > > "Jim Harrison [MSFT]" wrote:
> > >
> > > > ISA wasn't designed with diffsrv in mind.
> > > > ISA wasn't designed to be a router at all; Windows handles that part.
> > > >
> > > > -- 
> > > >  Jim Harrison [ISASE]
> > > >  Read the help, books and articles!
> > > >
> > > >  This posting is provided "AS IS" with no warranties, and confers no rights.
> > > >
> > > >
> > > > "InBan" <InBan@discussions.microsoft.com> wrote in message news:319C0CEC-27B5-477C-955A-899DB527D3F6@microsoft.com...
> > > > Does anyone know of a method in which ISA is capable of updating the IP headers of GRE packets with DiffServ information 
> > > > from
> > > > the
> > > > ToS field of the IP Header that is encapsulated in the GRE packet?
> > > >
> > > > This would allow DSCP aware routers on the Internet to prioritize traffic based on the ToS field of the GRE packets IP 
> > > > header.
> > > > CISCO's IOS can do it, why can't ISA?
> > > >
> > > >
> > > >
> > >
> > >
> > >
> >
> >
> >

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