topic Is there a command to check the incoming DSCP value entering the switch? in ExtremeSwitching (EXOS/Switch Engine)

Is there a command to check the incoming DSCP value entering the switch?

CodeRed_Red — Sat, 12 Nov 2016 06:30:00 GMT

Any command to check the incoming DSCP value entering the switch in ExtremeXOS version 16.1.3.6?

RE: Is there a command to check the incoming DSCP value entering the switch?

OscarK — Mon, 14 Nov 2016 15:37:00 GMT

There is no command to do that. I would suggest to enable diffserv examinition, configure every codepoint to match the right QP (qosprofile) and see which qosprofiles are hit using 'show qosprofile '.

RE: Is there a command to check the incoming DSCP value entering the switch?

Jason_Parker — Mon, 14 Nov 2016 19:22:00 GMT

i also suggest using wireshark (free) and set a basic filter such as
ip.addr == (ipaddress of the pc reviewing)
maybe set up a port mirror to capture the packets for review

RE: Is there a command to check the incoming DSCP value entering the switch?

Henrique — Thu, 17 Nov 2016 00:06:00 GMT

There is no CLI to check the incoming DSCP value.

The best way is to mirror ingressing packets and analyze them through the wireshark.

Articles about mirroring:

https://gtacknowledge.extremenetworks.com/articles/How_To/How-To-Enable-And-Configure-Mirroring-In-E...

https://gtacknowledge.extremenetworks.com/articles/How_To/How-To-Mirror-Specific-Type-of-Traffic

You can check if the packets are egressing in the correct queue with the command below:

show ports qosmonitor

Article about QoS:

https://gtacknowledge.extremenetworks.com/articles/How_To/Configuring-QOS-profiles-and-verify-QOS-is...