[j-nsp] Setting CoS bits on ingress frames

Victor Sudakov vas at mpeks.tomsk.su
Mon Jun 15 06:09:55 EDT 2015


I have the following configuration on some Cisco switches, e.g.

interface GigabitEthernet0/10
 switchport access vlan XXX
 switchport mode access
 mls qos cos 6
 mls qos cos override

How do I do the same on a Juniper EX4200 switch, namely force a 802.1p
CoS value on all ingress frames incoming via a certain access port
and keep this value when these frames leave the EX4200 switch via a
trunk port?

I don't need to modify Juniper queues or anything sophisticated. I
just need to classify frames and pass the classified frames to the
communications equipment which understands CoS bits.

Thank you in advance for any input.

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

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