QoS migration

[zheepern0826]

Hi Guys, 

We are migrating our 4507 (IOS 12.2) to 6807 (IOS 15.5SY). We notice the qos command is different.

below is the existing command in 4507.

qos map cos 5 to dscp 46
qos

!

interface GigabitEthernet3/1
 switchport trunk encapsulation dot1q
 switchport mode trunk
 qos trust dscp

We configure the qos trust dscp on the interface.

In the new switch 6807,  we are unable to configure the "qos map cos 5 to dscp 46" & "qos trust dscp" on the interface. 

I'm going through the release note on the 15.5SY qos part but confused over the command.

To Map cos to dscp, i will insert " table-map cos-discard-class-map 0 1 2 3 4 5 6 7 " This is to map received CoS to internal DSCP map. But how do we convert the cos 5 to dscp 46 ?

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/15-5SY/config_guide/sup6T/15_5_sy_swcg_6T/qos_global_and_if.html#40967

Please advise. 

Thank you in advance. 

Eric

[zheepern0826]

Hi All, 

I think i have found out the command in below link. 

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/15-0SY/configuration/guide/15_0_sy_swcg/qos_migration.pdf

The command to map cos to dscp in ios 15.5SY is as below. 

table-map cos-discard-class-map
 map from  5 to 46

and the qos trust dscp configure under the interface is enabled by default. 

Can anyone verify this ? 

Thank you. 

Eric