[c-nsp] QoS VLAN Marking is not working 7600

[Arie Vayner (avayner)]

Indeed it could, but it's not a very common practice, and could also get
you into unexpected situations as many platforms have lots of default
behavior around Prec 6, assuming this is control traffic.

Arie

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Phil Mayers
Sent: Thursday, August 25, 2011 15:01
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] QoS VLAN Marking is not working 7600

On 25/08/11 12:55, Arie Vayner (avayner) wrote:
> Omar,
>
> What traffic do you expect to be marked with EXP 6?
>
> Do you have any transit traffic (i.e. traffic not originated by the 
> 7600, but sent from a remote client), which is marked with some other 
> (non EXP=6,0) value?
>
> Usually Prec 6 would be used for control traffic (routing protocols 
> etc), and this traffic is usually one hop only, and would not be 
> encapsulated with MPLS, so no EXP bits...
> The only exceptions I can think of would be transit BGP or directed 
> LDP sessions terminated on a remote router (not the adjacent CRS)

Surely it's arbitrary though? EXP/CoS==6 maps to DSCP 48 which is
internetwork-control in ToS terms, but if you wanted, it could mean
"customer 4"
_______________________________________________
cisco-nsp mailing list  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/