all with fiber connections. Each fiber connection runs to a single 3508G-XL.
We are having what I beleive is SPT convergence 4-5 times a day.
Portfast is enabled on the fiber ports, and it was my understanding that PortFast should be disabled on any port that connects to a switch or hub. Since the fiber connects to switches, should I have PortFast disabled on all fiber ports?
Enable portfast on all ports connected to end devices, like PC's/Servers etc. Disable portfast on all ports between switches. You shouldn't be seeing too much STP reconvergence if the network is quite stable. If the connection between switches are flapping that can cause STP to reconverge.
If you are still having problems can you elaborate what type of problem you are having and post the relevant output from the switch.
From your description I doubt it is spanning tree. If I read you correctly you have a Star like topology with the Hub swith (3508G-XL) connected via a single Gb fibre to each of the Spoke switches (2950, 3500, 2948XL).
Spanning tree convergance will only take place if you have multiple links, either there are two connections between a Spoke and the Hub, or two Spokes are connected together.
As previously stated, the switch-2-switch connections should not have PortFast enabled, on either device.
Without any further information, I would suspect a broadcast/multicast issue, are there any particular activities being performed on your network at the time you have issues. Imaging tools (Ghost etc) are regular sources of such issues.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.