Loop prevention on LAN

[Kar_Del_Moral]

Our current network configuration, is only running ESRP (active/pasive) no stp or mstp, I'll like to implement some loop prevention configuration. Just today I had an issue in one switch that loose the uplink to the Primary Core, this turn into a failover to the secondary core, and it appear the issue was some kind of loop in a communication closet (I unplugged communication link in the whole closet). What do you suggest, do you think ELRP might help me? Thanks

[JohanHendrikx]

I use the vlan default for it.I configure all ports in vlan default tagged, except the uplinks.

Reason: If someone connects a cable in to ports that belongs to different vlan's it will be also noticed.

[Vellachery__Sum]

Karina,

Yes, we could configure ELRP to detect the loop. I have included an KB Article for your reference below:-

https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-configure-ELRP-to-disable-ports