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Configuration of RSTP to stop my network frequently Dying.
We have severe problems, I believe with someone in the office crossing network ports, and causing a loop somewhere. This has happened a few times now, and on most occasions, after a few hours Ive man...
Wow. This is a wealth of information, and Ive spent days searching the internet. Ive not managed to find nearly half as much as youve offered here, and IM grateful for the assistance.
Our Topology is fairly basic, as the attached diagram shows.
The office is made up of two buildings, physically joined, and networked with 2 x 10GB Fiber connections (shown above in blue). The Green lines represent gigabit uplinks from all of the switches to the two "Core" devices. connected to all of the switches are the users PCs, printers, and Phones (on the FS728TP).
Im not sure what config files you need (from which devices) but Im happy to provide those.. ?
The topology seems simple enough.
For Building Wing A. Change the Bridge priority value on GSM7328Sv2 to 0 under the spanning tree configuration.
For Building Wing B. Change the Bridge priority value on GSM7328Sv2 to 16384 under the spanning tree configuration.
That should take care of root changes immediately. make sure to do this during off production hours. Make sure all other switches are defaulted to 32768 for bridge value (This is default value)
Make sure all switches are switched to MSTP or fallback to RSTP for switches taht do not have it.
1. Make sure the uplink between the 2 core switches is ethernet and not stacking. Stacking in this specific circumstance will be ok if you want to make it unified switch setup but LAG would be preferred to prevent split brain routing since all routing will end up terminating on building A.
2. Log into the switch via telnet or SSH or serial console. At enable prompt type "show tech-support" command to generate the support file. PM this file to me for both core switches
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