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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><a href="http://www.macvendorlookup.com/">http://www.macvendorlookup.com/</a> shows:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">The eth3 device is manufactured by TP-Link Technologies<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">The eth0 device by Dell<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">The eth1 device by Intel<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">The eth2 device by Intel<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">I would check the cable to eth3. Are the lights coming up?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Run ethtool eth3 please<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Why are you choosing to use the TP-Link card instead of one of the onboard Intel interfaces?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Your call of course.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"> John Thingstad [mailto:jpthing@online.no]
<br>
<b>Sent:</b> 21 July 2015 07:10<br>
<b>To:</b> John Hearns; 'beowulf@beowulf.org'<br>
<b>Subject:</b> Re: [Beowulf] Fundamental HPC cluster problem<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">john@Pandora:~$ ip addr<br>
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
<br>
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00<br>
inet 127.0.0.1/8 scope host lo<br>
valid_lft forever preferred_lft forever<br>
inet6 ::1/128 scope host <br>
valid_lft forever preferred_lft forever<br>
2: eth3: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000<br>
link/ether 14:cc:20:05:f2:1c brd ff:ff:ff:ff:ff:ff<br>
inet 192.168.10.1/24 brd 192.168.10.255 scope global eth3<br>
valid_lft forever preferred_lft forever<br>
3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000<br>
link/ether d4:ae:52:cc:87:bb brd ff:ff:ff:ff:ff:ff<br>
inet 192.168.0.100/24 brd 192.168.0.255 scope global eth0<br>
valid_lft forever preferred_lft forever<br>
inet6 fe80::d6ae:52ff:fecc:87bb/64 scope link <br>
valid_lft forever preferred_lft forever<br>
4: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000<br>
link/ether 90:e2:ba:4c:54:b8 brd ff:ff:ff:ff:ff:ff<br>
5: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000<br>
link/ether 90:e2:ba:4c:54:b9 brd ff:ff:ff:ff:ff:ff<br>
<br>
john@Pandora:~$ ip route<br>
default via 192.168.0.1 dev eth0 <br>
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.100 <br>
192.168.10.0/24 dev eth3 proto kernel scope link src 192.168.10.1 <br>
<br>
john@Pandora:~$ sudo service isc-dhcp-server restart<br>
john@Pandora:~$ sudo tail -f /var/log/syslog<br>
...<br>
Jul 21 08:06:13 Pandora kernel: [71959.936774] init: isc-dhcp-server main process (1293) killed by TERM signal<br>
Jul 21 08:06:13 Pandora dhcpd: Not searching LDAP since ldap-server, ldap-port and ldap-base-dn were not specified in the config file<br>
Jul 21 08:06:13 Pandora dhcpd: Not searching LDAP since ldap-server, ldap-port and ldap-base-dn were not specified in the config file<br>
Jul 21 08:06:13 Pandora dhcpd: Wrote 0 leases to leases file.<br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal">Den 21. juli 2015 02:49, skrev John Hearns:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">John</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Please give is the results of ‘ip addr’</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Also look closely at the system log messages when dhcp starts.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Stop the dhcp service, then restart it when running a tail –f on the system log.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">If that does not help, stop the dhcp service and run dhcpd with the ‘-d’ flag in a separate window,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">and give it the argument eth3 on the command line ?</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
</blockquote>
<p class="MsoNormal"><o:p> </o:p></p>
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