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All the other ports on the switch are fine. I've tried moving it to a different port and it does the same thing. I've looked into power management settings and there are none for this printer. The port only goes down for a few seconds, then comes back up. A few minutes later, it does the same thing. The printer functions normally. I've also tried changing the switch port and the printer's NIC from auto-negotiate to 100Full, but that didn't help. Now I'm thinking it's a bad cable. Any other ideas?

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Have you tried replacing the cable? – Darth Android Aug 5 '11 at 19:13
@Darth: Not yet. I'll swap the patch cable as soon as I can find a replacement. The other possibility is the main run for that port, which is the length of the building, so replacing it will be a non-trivial task. As such I've been hoping to avoid it. – boot13 Aug 5 '11 at 19:21
@Darth: Replaced the network cable between the printer and the wall jack and it didn't help. I guess the only thing left is to move the printer to another jack temporarily - as a test. – boot13 Aug 5 '11 at 23:53
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Can you temporarily move the printer to the switch or use a different cable run? Are duplex and speed Auto or hard set on both switch and printer? Have seen a problem with duplex and speed on auto. I know it is supposed to work and normally does. Had one that was fine for ages and suddenly wanted both hard set.

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Moving the printer close to the switch to bypass the long cable run makes sense from a troubleshooting standpoint, but it's impractical in reality because the printer is used throughout the day. I suppose I could try that after hours some time. I'll keep that idea for later. As I mentioned in the original question, I've tried setting both ends to 100Full and it didn't help. – boot13 Aug 5 '11 at 20:04
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