[j-nsp] Setting CoS bits on ingress frames

Victor Sudakov vas at mpeks.tomsk.su
Wed Jun 17 10:10:24 EDT 2015

Mark Tinka wrote:
> > Oh, but I was talking about 802.1p CoS, not about IP and dscp. And
> > the interfaces I need to classify incoming frames on are configured as
> > "family ethernet-switching port-mode access", not as "family inet".
> >
> > The good thing is that when an EX4200 receives a frame with a
> > non-default CoS via a trunk port, it does not stip or alter it, but
> > just passes it on via the egress trunk port. Now I need to classify
> > frames coming via access ports.
> Policy Map also supports 802.1p, but on the MX.
> Ingress marking on any other Juniper platform is not supported. You can
> only mark/re-mark on egress, which is why we pushed Cisco to develop
> Policy Map, given how limiting egress marking is.

All right, if I have Internet traffic in VLAN10 and video cameras in
VLAN20, how do I mark on egress frames belonging to VLAN20 with CoS=1
and those belonging to VLAN20 with CoS=4 ?

Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
sip:sudakov at sibptus.tomsk.ru

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