https://wiki.preterhuman.net/index.php?title=SGI_troubleshooting_ec0_no_carrier&feed=atom&action=historySGI troubleshooting ec0 no carrier - Revision history2024-03-28T18:59:01ZRevision history for this page on the wikiMediaWiki 1.35.0https://wiki.preterhuman.net/index.php?title=SGI_troubleshooting_ec0_no_carrier&diff=10827&oldid=prevNetfreak: Created page with "Tips for troubleshooting the following problem (these notes specific for SGI O2): [ESP System Information Notification]:$(0x111)ALERT: ec0: no carrier: check Ethernet cab..."2019-07-31T07:19:54Z<p>Created page with "Tips for troubleshooting the following problem (these notes specific for <a href="/SGI_O2" title="SGI O2">SGI O2</a>): [ESP System Information Notification]:$(0x111)ALERT: ec0: no carrier: check Ethernet cab..."</p>
<p><b>New page</b></p><div>Tips for troubleshooting the following problem (these notes specific for [[SGI O2]]):<br />
<br />
[ESP System Information Notification]:$(0x111)ALERT: ec0: no carrier: check Ethernet cable<br /><br />
ALERT: ec0: no carrier: check Ethernet cable<br /><br />
<br />
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* Power-up the machine, stop at maintenance, select 'Enter Command Monitor' and run 'ide'. Sometimes this has helped to revive the network service.<br />
* If ISDN is installed: check that the RJ-45 ethernet cable is not plugged into the ISDN port.<br />
<br />
The SGI documentation has some more generic suggestions. Some may<br />
apply to your machine:<br />
<br />
* Make sure 'hinv -c network' reports ''Integral Ethernet: ec0, version 1''. Does it also report ''Integral ISDN: Basic Rate Interface unit 0, revision 1.0'' ?<br />
* Make sure that the hub supports 10BaseT 1/2-duplex or 100BaseT as needed.<br />
* If you attach both an Ethernet AUI cable and an Ethernet 10-BASE T cable to your system, and if the Ethernet 10-BASE T connection is live, the system will use Ethernet 10-BASE T.<br />
* There are earlier versions of cabling similar to 10-BASE T. These may mechanically fit the Indigo 2 connector, but do not work electrically.<br />
* Check the physical connections to the Ethernet cables for tightness and connection. If your Ethernet hardware is loose or disconnected, the /var/adm/SYSLOG file and your system console should both show messages such as 'ec0: no carrier: check Ethernet cable'.<br />
* After determining that the transceiver cable is plugged into the back of the machine and also into the transceiver box, look for other possible reasons for failure:<br />
** Check the machines transceiver.<br />
** Check the transceiver cable, and try swapping it out with one that is working on another machine.<br />
** Check for a problem with a 10baseT hub.<br />
*** Try a different port on the hub.<br />
*** Try a different cable.<br />
*** Try a different hub.<br />
** If you try all the troubleshooting techniques and you still cannot access the network, contact your service provider; the network itself may be temporarily out of order.<br />
<br />
Most common failures:<br />
* Wrong hub or hub not working.<br />
* 10BaseT ethernet cable plugged into ISDN port.<br />
* 10-BASE T port dead but AUI port is working.<br />
* Hub supports 10BaseT 1/2-duplex or 100BaseT only.<br />
* Hub *PORTS* support either 10 or 100 but not both while *HUB* connects both 10 and 100 segments internally.<br />
<br />
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[[Category:SGI]][[Category:Troubleshooting]]</div>Netfreak