loop detection on port of extreme x250e-24t

[Gunvant_Desai]

There is physical loop detected on Extremex250e-24t switch,due to this entire network went down at one of our customer site.
Is anybody can help me how to block the port if the loop is detected on the switch?

So that in future if physical loop detected on the switch then port will automatically blocked it.

please let me know the procedure for the same.

Thanks in advanced!!!

[Gunvant_Desai]

i was trying to configure elrp on extrem switch as per given commands below:-
enable elrp-client
configure elrp-client periodic elrp_test ports 2 log disable-port egress duration 15​
but i can only able to type command "configure elrp-client periodic elrp_test ports 2 log" there is no further command disable-port egress duration 15 and
"configure elrp-client disable-port exclude 21"

please suggest

[Jeremy_Gibbs]

Or setup STP: (Stole this from a few friends of mine. But this is a good working STP config)

# Module stp configuration. #
configure mstp region Perlman
create stpd Perlman_stm
configure stpd Perlman_stm mode dot1w
configure stpd s0 delete vlan default ports all
disable stpd s0 auto-bind vlan default
configure stpd Perlman_stm add vlan Perlman ports 1:1 emistp

#Each edge port should be configured with edge-safegaurd and bpdu-restrict
configure stpd Perlman_stm ports mode emistp 1:1
configure stpd Perlman_stm ports cost auto 1:1
configure stpd Perlman_stm ports port-priority 128 1:1
configure stpd Perlman_stm ports link-type edge 1:1
configure stpd Perlman_stm ports edge-safeguard enable 1:1
configure stpd Perlman_stm ports bpdu-restrict enable 1:1
enable stpd Perlman_stm ports 1:1
enable stpd Perlman_stm

[Gunvant_Desai]

Thanks Jeremy,

I have tried with this also but didnot work.I am if anybody is connecting cable back to back on the switch then port should be blocked on untaged port.

if you can help me in step by step configuration then that will be really great for me.

[Zdeněk_Pala]

ELRP is proprietary and many times better, but you can use standard MSTP (spanning tree) 802.1s based protection

[Karthik_Mohando]

Hi Gunvant,

You could use ELRP in this case to disable the ports.

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

Here is the article to help on how to configure it.