I am a Systems Engineer working with a Cisco Channel Partner.
A client of ours has a fiber backbone between two buildings on their campus.
The fiber terminates on a Catalyst 6509 (at the data centre) and a Catalyst 3750 at the other end. Users at the far-end connect to servers located at the data center over this fiber.
This connection has been working fine for the past 2 years, until a recent problem came up.
For two weeks now, the usual occurrence is for the fiber link to stop passing traffic while working until the 3750 is rebooted or the fiber connectors removed from the SFP port and replugged.
Meanwhile, the interface and line protocol remain UP on both switches during this abnormal behaviour. There are also no log messages occurring. Everything look fine on both switches. They just wouldnt pass traffic. The problem occurs about twice each day.
It's difficult diagnosing the problem now. I need help pls.
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...