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: [email protected] [mailto:[email protected]] On Behalf Of Phil Mayers Sent: Thursday, August 25, 2011 15:01 To: [email protected] 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 [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
