Hi everbody
We have to trace an issue where the DSCP-values of a voice-connection get lost somewhere - the packets are marked with DSCP 46 on the sending client, but are DSCP 0 on the receiving end. On IOS, there is the very handy command 'show mls qos int x/y statistics', with which we see the DSCP-Values of the Packets transferred through a switch-port, even if we don't have a complex QoS-Configuration (mls qos trust dscp everywhere).
On Nexus, there is no such command, and the output of show policy-map tells only when packets are dropped out of queues, but nothing on the 'regular' traffic and nothing on bare DSCP-Values neither.
Is there something, which corresponds to 'show mls qos' on the nexus, or is there another way with which we can trace easily where packets are DSCP-marked and where not?
Thanks in advance and greetings from Berne
Stefan Mueller
ps: I don't mean that I suspect the Nexus of dropping the DSCP-Marking - as far as I understand, it sort of uses qos trust dscp per default. But there are numerous Firewalls, Voice-Servers and other boxes in between the connection, and I would like to isolate the problem to a single box...
ps2: Details for the Nexus: c7010 with M1-Cards, running NX-OS 4.2(4) and 5.1(3)
