Date: Mon, 26 Apr 2004 17:58:29 +0800 From: Eugene Grosbein <eugen@kuzbass.ru> To: net@freebsd.org Cc: tackerman@freebsd.org Subject: em(4) link flapping Message-ID: <408CDD45.4EFA2085@kuzbass.ru>
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Hi! My Intel motherboard contains on-boad NIC: em0: <Intel(R) PRO/1000 Network Connection, Version - 1.7.25> port 0xac00-0xac1f mem 0xfe9e0000-0xfe9fffff irq 10 at device 1.0 on pci2 It it connected to Allied Telesyn AT FS724i unmanaged switch, media is autodetected correctly - 100baseTX full-duplex. It worked nice for 3 months. Today morning switch and em0 start to loose/establish link every 5-10 seconds. They do it with autosensed media and with manually set 100baseTX (both half-duplex or full-duplex variants) now. I've forced it to 10mbit/half duplex, it seems to be much stable. This box has two more PCI ethernet cards, each of which is two-port em(4), so I have em0 (that has problems) and em1, em2, em3 and em4 (that keep working OK). I tried to replace a cable, to reset the switch, to reboot this 4.9-STABLE box - nothing helps. What should I try next? Eugene Grosbein
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