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LAG link-down after restart for SG350-28MP switches

patrick.talloen
Level 1
Level 1

Hello,

Two of our SG350--28MP switches are connected by two cables.

We created a LAG for two switchports on both switches.

The LAG functions until we restart one of the switches.

The LAG link is down after the restart.

When we unplug and replug the two LAG member copper cables, the LAG link comes up.

Both SG350-28MP switches are on firmware 2.5.8.15

 

I already followed the ticket https://community.cisco.com/t5/small-business-switches/sg350xg-to-sg350-lag-not-up-after-restart/td-p/4179343

 

It doesn't helped.

 

Any advise to resolve this?

1 Accepted Solution

Accepted Solutions

balaji.bandi
Hall of Fame
Hall of Fame

what is the config on that ports, make sure you disable any smartport config on that ports ?

 

what is the case if only 1 link, is this stay all the time up ?  how about spanning tree ?

 

BB

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2 Replies 2

balaji.bandi
Hall of Fame
Hall of Fame

what is the config on that ports, make sure you disable any smartport config on that ports ?

 

what is the case if only 1 link, is this stay all the time up ?  how about spanning tree ?

 

BB

***** Rate All Helpful Responses *****

How to Ask The Cisco Community for Help

patrick.talloen
Level 1
Level 1

Problem was resolved by disabling Smartport.

 

Ticket can be closed.

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