Check your duplex settigs you may also want to test with another cable. Thanks, Mario Puras SoluNet Technical Support Mailto: mpuras@solunet.com Direct: (321) 309-1410 888.449.5766 (USA) / 888.SOLUNET (Canada) -----Original Message----- From: Drew Weaver [mailto:drew.weaver@thenap.com] Sent: Tuesday, January 07, 2003 2:19 PM To: 'nanog@merit.edu' Subject: Weird networking issue. Hi, this is kind of a newbie question but this doesn't make a whole lot of sense :P I have an etherstack hub connected to a FastEthernet port on a cisco 3660 router, these are the stats when I do a show int fast0/0: 5776 input errors, 5776 CRC, 2717 frame, 0 overrun, 0 ignored Whats weird is I just cleared the counters 12 minutes ago, and already there are almost 6000 CRC errors. This connected via a standard Cat5 ethernet cable, I have tried replacing the cable to noavail. Is this a fairly normal situation, If so that's great, but it seemed rather ridiculous to me, and if it is not a normal situation, what would cause this? Any ideas are appreciated. Thanks, -Drew Weaver