On 06/02/2014 20:46, Mikael Abrahamsson wrote:
> On Thu, 6 Feb 2014, Brian E Carpenter wrote:
>
>> We designed diffserv for this purpose and it works well and is quite
>> widely used in corporate networks. Wasting prefixes to distinguish
>> traffic types is an incredibly bad idea.
>
> Problem with DSCP is that you have to reset them for a non-qos service
> in your network (unless you're running some kind of encapsulation scheme
> such as tunnels or MPLS).
Sorry, what, why? DSCP is a no-op for a router that doesn't
implement diffserv, so why would you ever need to reset them?
(It's normal for border routers to clear the DSCP if they want to,
of course; no harm, no foul.)
Brian
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