We have been running on a 3550-48 port switch a about 2 years now with no problem. Recently, we got our new set of IP's and wanted to assign a subnet of 8 IP's to each customer. Therefore to plan ahead and to be ready for implementation, we went and created 512 VLANS on the switch as well as configuring each VLAN with its gateway IP. So we have on our switch 512 configured VLANS (along with the other vlans which are currently servicing over 400 servers).
Since we did that, there is a lag on the switch, even if we ping locally on our network from one subnet to the other we usually get something like this:
It fluctuates all the time maybe because there is a load or something ON the switch. Before doing those changes, it used to be ALL the time <1 MS (of course since it is inside the network)
Can that change we made affect our switch's performance that much?? Is it the fact that we added all those VLANs and routed them or maybe some other protocol that got more clustered because of that (like spanning tree or some other thing). CPU is running at 12 % and memory still has over half free... We are not sure where to check...
Any help would be greatly appreciated.