Archetecture is as follows:
- 3560G-48TS as the core (L3 routing, VTP server, etc...), running IP Base. Very basic configs, Vlan1 for management, another VLAN for about 25 IP Phones, another VLAN with about 50 desktops/servers.
- All other switches are uplinked to this core 3560. Another 3560G-48TS, a pair of 3560POE-48S, a 3560POE-24, a 2970 and a 2950.
I recently setup a NMS box running OpenNMS, Cacti, and Rancid to do some basic management functions for the network and noticed a couple of things.
Cacti shows a few of the switches (mostly the core) as unavailable via SNMP, and VERY high latency. I ran an extended ping and dropped about .8% of packets. Also note, that both Cacti and OpenNMS show drops to not only switches, but to servers as well. This coorelates with another NMS box running some Dell IT Assistant SNMP client which also shows the same connectivity issues (servers "bounce" up and down all day)
All switches are sitting at around 5-10% CPU utilization, and this network should be sleeping.
Right now, the NMS box is connected via a "edge" swtich. I will connect it directly to the core to eliminate the possibility of an uplink problem on the switch the box is currently connected to, but I am also loosing connectivity to servers connected to other switches.