I did that but no help. If fact, we have more than 40 machines with Intel 82543 gigabit network card, all of them have the same problem. So either the driver or the hardware got some kind of issues I don't understand. I'm using the general Linux kernel 2.4.26 on linux Fedora Core 1. Thanks. --Guolin -----Original Message----- From: fedora-list-bounces@xxxxxxxxxx [mailto:fedora-list-bounces@xxxxxxxxxx] On Behalf Of Yang Xiao Sent: Tuesday, September 28, 2004 4:54 PM To: For users of Fedora Core releases Subject: Re: Problem: Intel 82543 card reports lots of carrier errors Change the cable and or port on the switch. Yang ----- Original Message ----- From: Guolin Cheng <guolin@xxxxxxxxx> Date: Tue, 28 Sep 2004 10:52:58 -0700 Subject: Problem: Intel 82543 card reports lots of carrier errors To: fedora-list@xxxxxxxxxx Hi, Anyone know why Intel 82543 gigabit cards report lots of carrier problems? I don't know why Intel 82543 gigabit network card using external transceiver(reported by ethtool) since it is directly connected to HP Switch with CAT-6 RJ45 network cables. Any one can explain where is the external transceiver for the Intel 82543 cards? I tried to run "ethtool -s eth1 xcvr internal" trying to set its transreciver to internal(on-board) but the operation fails silently. Please help. In contrast, Intel 82540 gigabit cards reports no carrier problems at all, and use internal transceiver(reported by ethtool). The following are the output of commands ethtool and ifconfig: [root@dumbboy root]# ifconfig eth1 | grep carrier TX packets:56944847 errors:0 dropped:0 overruns:0 carrier:39363496 [root@dumbboy root]# ethtool -S eth1 | grep -E 'carrier|tx_packets' tx_packets: 57027012 tx_carrier_errors: 39417377 [root@dumbboy root]# ethtool eth1 Settings for eth1: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised auto-negotiation: Yes Speed: 100Mb/s Duplex: Full Port: Twisted Pair PHYAD: 0 Transceiver: externel Auto-negotiation: on Supports Wake-on: d Wake-on: d Link detected: yes [root@dumbboy root]# -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list