hi! I've a stack of 4 cisco3524(IOS) switches with 2 of these switches (the bottom and the top) connected to the 2 core switches (6509-CatOS) by fiber link.
I noticed that both of these interfaces connected to the core switches are in forwarding state. I would like to have one of them as a standby and not forwarding traffic for both. The reason is because i noticed that one of the link is not that stable, there are intermittent packet lost. So, i would like all the traffic to go to the other fiber link and the one with problem as standby.
What need to be done to achieve this? Btw how do i check whether the link with intermittent problem is it caused by the hardware or something else. From the interface it will show link and protocol up, but when i do a continous ping to other devices outside of the 4 edge switches, there's intermittent timeout.
Are your 6500 core switches connected to each other via L2 trunk ?
If they are and the vlans are the same across all your 3524 switches then if both links are forwarding they must be being blocked somewhere else. Have you set STP root and secondary for your vlans on the 6500 switches ?
Attached is a troubleshooting doc on interface problems which may give you some pointers.
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...