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Forum Discussion
I want to disable STP on specific ports only
I want to disable STP on specific ports only. (I do not want to disable the entire STP)
In [Switchng]-[Ports]-[PortConfigration] Check the port you want to disable.
Select STPmode to Disable an...
The reason that STP is invalidated at a specific port.
I'd like to link 2 of LAN by a connection with the switch.
But when 2 of LAN is linked, a loop occurs, and a port is downed.
2 LANs use VLAN1 and VLAN245 respectively.
(I'm using AccessPort.)
A connection destination of 2 LANs is the same switch.
Dell SWICH
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NetGear(M5300)
But for a loop to occur to use different VLAN by 2 of LAN, a possibility that it's blocked in STP is considered.
The elegant solution would be the configuration of a tagged trunk (LAG), carrying traffic for both [V]LANs.
I'm thinking about setting with a trunk port, but I want to think with an access port as much as possible.
In your case and since you explained your topology later as in the initial post one 1 of the 2 links will be blocked by both STP and RSTP.
Technicaly you could consider MSTP - ignoring the originally vendor-specific PVST and RPVST/PVST+ modes - but then again, schumaku 's suggestion of creating an LAG on both ends and tag all VLANs on the LAG interface is proven to work (for me) and provides proper redundancy where both links can be used by all VLANs.
However the Dell switch needs to support link aggregation with LACP. You might also have to fiddle out what mode (dynamic or static LAG) works with both vendors.
Keep your STP configuration simple and it will work reliably when loops occur. Don't try to outsmart it ;-)
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