Forum Discussion

Aspirant

Oct 30, 2017

M4300-52G-PoE+ loop error

Hello, i have a stack of 2 netgear m4300 switches. i also have a second stack of 2 m4300 switches. these stack is connected with a lag to the first stack. on the second stack is port 51 of each swi...

Troubleshooting

Retired_Member

Nov 07, 2017

Hi knarfer

I notice that L2 Loop Protection is enabled on all ports.

interface 1/0/34
keepalive
keepalive action log
exit

So could you please remove 'keepalive' and 'keepalive action log' for all ports, and try again.

Thanks.

knarfer

Aspirant

Nov 09, 2017

Hi Eric,

i change this to disabled:

still the same,

regards

Frank

knarfer
Aspirant
Nov 15, 2017
Hi,
any update on this issue?

regards
Frank
DaneA
NETGEAR Employee Retired
Nov 15, 2017
knarfer,

Since you mentioned that you have 2 stacks of M4300 switches connected to each other via LAG as well as other switches connected to the stack(s), just want to verify if you did the suggestion of Retired_Member to remove 'keepalive' and 'keepalive action log' for all ports on each stack and other switches?

Also, since you mentioned that you see "loop error" in all switches, I suggest that you try to disconnect the switch(es) connected to the 2 stacks of M4300 switches connected to each other via LAG and observe if the "loop error" will still appear. In this way, we'll know if the loop error originates on these 2 stacks of M4300 switches. Do this outside production hours.

Regards,

DaneA

NETGEAR Community Team
DaneA
NETGEAR Employee Retired
Nov 21, 2017
knarfer,

I just want to follow-up on this. Were you able to try my suggestions? If yes, let us know the result.

Regards,

DaneA

NETGEAR Community Team