Regarding no ip route-cache on Cisco 2960

Question

The users have been complaining about the network is slowness , after checking each lay2 switches, I found under each vlan the no ip route-cache is configured, the module is 2960, I am not sure if the command is there by default or configured manually, it is configured under the vlan interface only, not under each interface, will this be the reason that causing the slow performance? by the way will there be downtime by removing this command?
Thanks

Answer 1

Network Latency is hard to troubleshoot.
-Isolate which customers are complaining about slow services
-ID the services(is is just shared drive access or just web access or is it everything accross the board)
If its the entire network, you probably have issues at the core or backbone so start looking for something that changed or is not meshing with the original design baseline.
If its isolated to one leg of the network, you can look at interface counters for errors or protocol implementations(maybe STP reconverged to a new link that is slower or root bridge problems are occuring.
You can also look at the CPU on the switches supporting the laggy hosts.  If its through the roof, then you probably have a loop or broadcast storm.
Hope this helps, but latency is really hard to troubleshoot until you can isolate the problem down.
Also, ip route-cache is just a higher level of switching.  The 2960 is perfectly capable of switching traffic for all of its user ports with the default switching method.