random-detect dscp-based in Priority class

[gauravprakash]

Hi,

I get the following error message when I configure this <random-detect dscp-based> while making a priority class policy.

Router(config-pmap)#class Premium-Class

Router(config-pmap-c)#priority percent 30

Router(config-pmap-c)#random-detect dscp-based

<<Must deconfigure priority in this class before issuing this command>>

Can anybody explain whats this..

IOS c1700-ipbase-mz.123-1a.bin

regards,

Gaurav

[pkhatri]

Hi Gaurav,

That error message simply means that you cannot enable WRED for a class that is configured as a priority classes. There are 2 reasons why it does not make sense to enable WRED here:

- the entire point of a priority class is to ensure that traffic is NOT dropped so configuring WRED is contrary to that aim

- most of the traffic requiring priority treatment is likely to be UDP, which does not benefit from WRED.

Hope that helps.

I would appreciate you rating the post if it helps.

Paresh