I'm looking in to a problem regarding slow response to a file server, post implementation of RSPAN source changes.
The LAN is a stack of 2/3 3750's on each floor, with a data Vlan per floor and a network wide voice Vlan 300. These access switches are gig fibre connected to two core switches, 6506's. Nortel IP handsets have been deployed and the voice Vlan 300 is being SPAN'ed to record to an IP voice recorder server. No problems there.
However, now there are Softphones deployed on various PC's and in order to facilitate staff relocation throughout the building, WITHOUT having to reconfigure any switch ports each time, the Data Vlan on each floor has also been specified as a source.
Having put additional config in to capture the data Vlan, there appears to be slow response when accessing a file server on a different Vlan. A ping -t that runs while copying a file to the Win 2003 file server actually drops and the copy hangs. If you try this again having either suspended the access switch RSPAN or shifting the file server to the other core switch, it seems to be OK and the difference in the ping response is very apparent
Has anyone come across any performance problems such as this and if so could you shed some light please?
Here's the config from only one of the floors:
DATA Vlan 112
VOICE Vlan 300
Remote SPAN dest Vlan 30
monitor session 1 source vlan 112 , 300
monitor session 1 destination remote vlan 30
Here's the config from the core switch where the voice recorder sits;
description *** SPAN destination for Witness CSS01 NIC 1 ***
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