I have the following topology:
DEVICE X <---- trunk vlan 10,20,30 ----> in.p C4500 out.p <---- trunk vlan 10,20,30,40,50 ----> DEVICE Y
I need to change the cos value for specific vlan (vlan 20) on Catalyst 4500. But only for vlan 20.
Received cos vaule on input port of c4500 for vlan 20 is 0,
output cos value on output port of c4500 for vlan 20 have to be 5.
According documentation i need to set internal dscp, which have to be copied to the cos field on output port.
But it doesn't work as it is expected.