I have 2 3500XL switches in a building exhibiting problems. I am having multiple instances of link up/down state changes. Sh post tells me ports 9-12 failed loopback test as well as the Gigabit port 1. No one in the building can data out. I am able to telnet in from another route though. This happened last week on about Thursday. Just prior to this we had a pretty bad storm blow over, lots of lightning. I am thinking Electrostatic Discharge and the interfaces for both are damaged. However I can't justify that, any help would be appreciated. If I had to replace them thats fine I just want to know I have exhausted all my solutions first.
We used 2900's during the Olympics here in Salt Lake City. After losing sets of 4 ports due to what we suspected to be static from dragging cat5 over the snow and ice, we started grounding all cables before connecting them to any port. Our problems did clearly go away. We stopped blowing away ports in sets of 4. Maybe this will help your justificaiton.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
Im studying the 100-105 book by Odom and am currently on the topic of Port security. I purchased a used 2960 and I'm trying to follow a...
While deploying a number of 18xx/2802/3802 model access points (APs), which run AP-COS as their operating platform. It can be observed on some occasions that while many of their access points were able to join the fabric WLC withou...
I am going to design and build an LAN network under a tunnel underground with long distance between the switches.
I will have 2 Catalyst switches and 8 Industrial IE3000, and they will be connected with fiber.
For now I am planning on use Layer-2 s...