Hi All,
My client Core Switch has mls qos enabled globally, and I've also configured couple of interfaces with "mls qos trust dscp" . When I check the output of those interfaces, it says that the Trust level is No. Why is that so? Would it trust any packets with certain dscp value or re-write them to dscp 0?
See below:
interface GigabitEthernet5/2
description ***1Gig DWDM link to xxxxx***
ip address x.x.x.x 255.255.255.248
mls qos trust dscp
end
lvjxxxx#sh mls qos ip gi5/2
[In] Default. [Out] Default.
QoS Summary [IPv4]: (* - shared aggregates, Mod - switch module)
Int Mod Dir Class-map DSCP Agg Trust Fl AgForward-By AgPoliced-By
Id Id
----------------------------------------------------------------------------------------------------------
Gi5/2 7 In Default 0 0* No 0 167475571232 0
But on the other hand, if I do this, it says there's QoS Trust state for that interface
lvjxxxxx#sh mls qos module 5
QoS is enabled globally
Policy marking depends on port_trust
QoS ip packet dscp rewrite enabled globally
Input mode for GRE Tunnel is Pipe mode
Input mode for MPLS is Pipe mode
QoS Trust state is DSCP on the following interface:
Gi5/2
Vlan or Portchannel(Multi-Earl) policies supported: Yes
Egress policies supported: Yes
Which output is telling the correct behaviour?
