qos-passthrough-mode

[Marcus J]

Hi,
We have several 2824 & 2848 switches.
The command qos-passthrough-mode was enabled several years ago because of performance problems.
Now we need qos due to a voip installation.

Can we do qos even though we are running qos-passthrough-mode?

or do i have to remove qos-passthrough-mode and live with slow transfers but with qos?

hp states the follwing which seems really bad.

"NOTE: As stated earlier, use of this QoS-Passthrough-Mode feature generally assumes that QoS tagged packets are not being sent through the 2800 Switch. The receipt of priority 6 or 7 packets may in fact suffer packet drops depending on the traffic load of non-priority 6 or 7 packets."