I have a problem with my LAN network. The core switch are two 3550 Switch, and several access switches 2950 connect to these 3550, each has one port to one 3550. So one port is SPT forwarding, another port is SPT block on each access switch.
But these days I found it is so slow to ping one 2950's vlan 1's ip address on the core switch, and the other 2950 is normal, even just from the core switch 3550. But PCs and Servers' communication under this 2950 with other Server on other switch is ok.
I have already check this 2950's CPU and Memory Utilization, but it just around 5% CPU utilization and 30% memory utilizaion.
Is there any wrong on this switch? What can I do to check this switch?
Very Thanks for any reply.