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Author Topic: LACP Problem on Stacked Switches  (Read 4210 times)

gobris

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  • Posts: 7
LACP Problem on Stacked Switches
« on: March 22, 2021, 01:42:41 AM »

Hello,
I have two 1510 switches physically stacked.
And one port from each switches configured as LACP (802.3ad) for high availability connected to a 2 port linux server.

Everything works fine , and I can see the LACP information on the OS side (Ubuntu)
But if I poweroff the master switch , LACP ID changes and my connection drops for a few seconds while LACP rebuilds with new id.

I had a similar problem with Cisco switches before, and the solution was "stack-switch persistent timer 0" parameter which holds the master switch id for LACP across the stack switches and prevent the ID change if master switch turns off.
So, the switching of the ports was so fast to notice.

I couldn't see such configuration on dlink gui or cli.
Is there another way to make it ?
Or does this need a development on firmware side?

Best Regards
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