I'm new in Extreme and want to know more about ELRP configuration.
I have some x440 swtches in network.
Some switches can places nearly one to another.
Users can create loop between access ports of two nearly switches.
How to prevent this?
I have next simple scenario:
On sw-1 with loop on ports 1 and 5 which placed in one vlan, elrp work fine.
On sw-2 with loop on ports 1 and 20 which placed in different vlans, elrp does not work. How i must to configure elrp in this case?
And finally - how i must to configure ELRP on sw-1 and sw-2 to detect loop between access ports of switches, if they placed in different vlans on this switches.
Should i use vlan 30 (voice vlan) for this purposes, or maybe use only RSTP with edge and restrict settings for access ports?
Given the scenario where the two ports are looped on separate VLANs, the ELRP packet is not coming back on either VLAN therefore a loop is not being detected. A workaround to this would be to create a dedicated ELRP VLAN with all ports added to it. This would lead to a loop being detected on the dedicate ELRP VLAN.
In the first scenario, with a loop connected to two ports in the same VLAN, the loop would be detected on the dedicated ELRP VLAN as well as the single VLAN where the ports are looped.