There are a two 4507s at the core of a data centre I am working on. They are running HSRP between them for various vlan interfaces, as well as OSPF as a routing protocol.
I have noticed that the CPU utilisation is sitting at around 37% normally.
CPU utilization for five seconds: 32%/2%; one minute: 37%; five minutes: 39%
The historical CPU shows regular spikes up to 90% and the odd spike to 100%. When I run an extended ping from one of these swithches to a server in the data centre on a different switch, I see spikes up to 100%
Are these CPU utilisations normal for these type of switches? Most of the other core 6500s I've been on are somewhere between 3 and 17%.
One thing I have noticed is that the vlan interfaces of these 4507s are running OSPF between each other on the LAN (ie there is no passive ospf interface config on them). Could the amount of OSPF traffic be burdening the CPU?
Any comments are welcome.