Latency issues through IP Phones

[cwestog]

Seeing an extra 25ms of latency on PC's behind IP phones(7940's and 7910's). This is a small pilot network consisting of a colapsed core of dual 3750's (L3) and 4 3750's (L2) at the access layer and using a 3745 loaded with CME 3.3. Each switch has two data vlans/2voice vlans for redundancy. All tests/pings on the network to the phones result in 1ms delay, same result for PC's directly connected to the switch. Tests to a PC behind a phone result in roughly 23-28ms . PC to PC tests (behind phones) result in 60ms delay. Phones appear to work fine and no issues in calling each phone. Any ideas?

[Steven Smith]

CSCee86360 notes slow performance and is fixed in the 6.0(4.0) firmware. This may be what you are experiencing.

[cwestog]

Upgraded the phones and no change in status, still have an extra 18-25 ms of delay pinging through a phone...thanks for the help though.

[cwestog]

Problem appears to have cleared...went and blew away the configuration on the L2 switches and reloaded/reconfigured them(same configs) and the problem appears to be cleared. I am now seeing <1ms delay on all network testing through the IP phones. Not doing anything different...very odd. Thanks all.