Switch causes constant activity

Apr 06, 2011 2 Replies
M

Hi,



I don't know much about network harware and I've got a question regarding switches. Setup is: router -> switch1 -> switch2 Switches are Cisco SD2005 Small Business. There is nothing to configure and all works well.



Switch2 was connected recently. Since then there is constant activity. Packet sniffers on machines connected to switch2 show a unremitting stream of:



? -> (broadcast) ETHER Type=8874 (Unknown), size = 60 bytes



0: ffff ffff ffff 0180 c200 0001 8874 e23b .............t.; 16: ef2d 93c1 eaa2 b5df f000 0000 0000 0000 .-.............. 32: 0000 0000 0000 0000 0000 0000 0000 0000 ................ 48: 0000 0000 0000 0000 0000 0000 ............

Connected to switch1 they don't. I wonder what's going on there.



Regards, Michael


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S

Some Googling suggests that this might be a simple loop-detection module baked into your switch. Further Googling suggests that I hope you didn't pay a lot for it. Yikes, I've never seen such unrelentingly negative reviews.

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M

Thanks. I'll have a look into the "loop detection" thing.

As far as I know the heat issue was corrected by now.

Regards, Michael

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