I have a 1544f switch that these two switches are plugging into with fiber directly to each location.
I have two new 1531P switches and I configured both at my desk and the worked fine and were responsive when I was plugged into Ethernet. When I took it onsite and plugged it into the sfp I was able to get the clients on the network, but when I got back to my desk I could not telnet or HTTP to the device. I switched out module, the fiber pair and even the port in our 1544f with no luck. I took it down and brought it back to the office. If I plug into another switch with the SFP port, I get normal CPU utilization. The second I plug it into the 1544f, I get high CPU utilization. Both the 1531p and the 1544f are on OS version R11.12.0. I thought it was software related on the 1531p so I took it back to factory firmware with some change. Now I can ping the device but REALLY bad response times (in the hundreds to thousands ms), but I the high CPU remains.
It's a pretty basic config and I've attached the config of one of the new switches as well as the cpu utilization. Any help would get great. Thanks!
colorroom.txt.zip 1,022 bytes