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Netgear switches crash network

Posted on 2013-02-05
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Last Modified: 2013-02-05
I have a Netgear GSM7312 and everytime I plug a Netgear JGS524 into a port the GSM switch stops working. I have three of these switches and it happens on all. Done all the basic checks so far...

I can see this error in the log when the network is down
6> Jan 6 19:52:05 0.0.0.0-1 UNKN[287491232]: dot1s_txrx.c(158) 70678 %% dot1sBpduReceive(): paddedBufHandle is L7_NULL

and this log when its up
<5> Jan 6 19:52:41 0.0.0.0-1 TRAPMGR[288835912]: traputil.c(663) 70679 %% Spanning Tree Topology Change: 0, Unit: 1

An help or advice?
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Question by:BerryGardens
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Expert Comment

by:Ben Hart
ID: 38855705
First thing I'd think is STP halted both interfaces.. but I'd also think that if STP was being kicked there'd be a reference to 'Spanning tree" in each event.. not just the one.
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Author Comment

by:BerryGardens
ID: 38855829
agreed. I have two other netgear l2 switches on other ports with no issues. I've compared detailed settings and both look identical. Very strange! I've plugged in an old netgear and that works on the same port. Seems to be only this model is the common factor which I can't believe.
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Expert Comment

by:Ben Hart
ID: 38856049
Is there any config on the troublesome netgear to be cleared?
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Author Comment

by:BerryGardens
ID: 38856065
No GUI on these switches. I even used one out of the box.
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Expert Comment

by:Ben Hart
ID: 38856164
wow.. so teh GSM stops forwarding packets on all ports when you plug in the JG right?  crossover cable or straight through?
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Author Comment

by:BerryGardens
ID: 38856331
My thoughts exactly. Cable is straight through Cat5e.
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Author Comment

by:BerryGardens
ID: 38856338
Sorry yes stops forwarding.
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Accepted Solution

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Ben Hart earned 500 total points
ID: 38856814
well.. I'm starting to lean towards maybe just a flaky switch then.
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Author Closing Comment

by:BerryGardens
ID: 38856978
I agree. Thanks for the help.
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