<div dir="ltr">MTR began being installed by default in place of traceroute. If you don't know mtr, get it in your life. It's usually how I know when cox has saturation issues at their peering with buffers killing my internet, and replaces traceroute in any number of ways.<div><br></div><div>> mtr <a href="http://google.com">google.com</a></div><div><br></div><div><span style="font-family:monospace"><span style="color:rgb(0,0,0)">> mtr --report -c 5 <a href="http://google.com">google.com</a>
</span><br>Start: Tue Jan 3 13:11:33 2017
<br>HOST: host Loss% Snt Last Avg Best Wrst StDev
<br> 1.|-- fw1.peoria1.unifiedconver 0.0% 5 0.3 0.3 0.2 0.3 0.0
<br> 2.|-- ??? 100.0 5 0.0 0.0 0.0 0.0 0.0
<br> 3.|-- 100.127.69.154 0.0% 5 9.3 9.1 8.2 10.6 0.7
<br> 4.|-- 72.215.229.22 0.0% 5 9.1 11.0 9.1 13.4 2.0
<br> 5.|-- <a href="http://langbprj02-ae1.0.rd.la.co">langbprj02-ae1.0.rd.la.co</a> 0.0% 5 21.7 21.7 21.2 22.5 0.0
<br> 6.|-- 72.14.215.221 0.0% 5 21.1 21.4 21.1 22.1 0.0
<br> 7.|-- 216.239.51.33 0.0% 5 22.9 22.0 21.4 22.9 0.5
<br> 8.|-- 209.85.246.187 0.0% 5 22.2 21.7 20.6 22.4 0.5
<br> 9.|-- 64.233.174.207 0.0% 5 37.3 37.5 36.3 40.8 1.7
<br> 10.|-- 209.85.246.39 0.0% 5 36.4 36.8 35.7 37.8 0.7
<br> 11.|-- 108.170.243.1 0.0% 5 39.7 36.9 35.5 39.7 1.5
<br> 12.|-- 108.170.237.105 0.0% 5 35.9 36.1 35.0 37.6 0.9
<br> 13.|-- <a href="http://sfo03s01-in-f206.1e100.ne">sfo03s01-in-f206.1e100.ne</a> 0.0% 5 36.7 36.7 35.4 38.2 1.0<br>
<br></span></div><div><span style="font-family:monospace">-mb</span></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jan 3, 2017 at 12:41 PM, Carruth, Rusty <span dir="ltr"><<a href="mailto:Rusty.Carruth@smartm.com" target="_blank">Rusty.Carruth@smartm.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" link="blue" vlink="purple">
<div class="m_-6458783142473435412WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Excellent step-by-step! +100 upvotes! ;-)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">The only thing I’d add is that, if you can get an external IP address (e.g. 204.110.11.131 (<a href="http://inficad.com" target="_blank">inficad.com</a> - don’t ask) or 216.58.194.206 (one possible value for
<a href="http://google.com" target="_blank">google.com</a>) and then do a traceroute -n to that address, you can see (without needing DNS) if the packets get out, and how far they get if they don’t get all the way out….<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">So, “traceroute -n 216.58.194.206”<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Unfortunately, traceroute is not always installed by default - GO DO THAT NOW!!! ;-) Since when you need it, you won’t be able to get it!<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> PLUG-discuss [mailto:<a href="mailto:plug-discuss-bounces@lists.phxlinux.org" target="_blank">plug-discuss-bounces@<wbr>lists.phxlinux.org</a>]
<b>On Behalf Of </b>Michael Butash<br>
<b>Sent:</b> Tuesday, January 03, 2017 12:34 PM<br>
<b>To:</b> Main PLUG discussion list<br>
<b>Subject:</b> Re: Offline<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">Just work your way up the network osi model in troubleshooting. Everyone should learn some networking these days, one way or another (speaking as a bofh network guy that deals with non-networking app and developers folk commonly - don't
be part of the problem).<u></u><u></u></p>
<div>
<p class="MsoNormal"><br>
####<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">## Layer 1/2, got link? note "state"<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">> ip link<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">## If no link, check cable plugged in for blinky lights<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><br>
####<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">## Layer 3, got ip?<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">> ip addr<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">## If no ip, check dhcp on the network<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">## Optional: Set static ip for temporary troubleshooting, insert proper subnets here:<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">ip addr add 192.168.1.100 255.255.255.0 dev eth0<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">ip route add default 192.168.1.1<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><br>
####<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">## Layer 3, verify arp to gateway<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">ip nei | grep `ip route | grep default | awk '{ print $3 }'`<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">## If no arp for gateway, check router/switch network<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><br>
####<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">## Layer 3, ping the gateway (whatever that is for you)<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">ping `ip route | grep default | awk '{ print $3 }'`<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">## If no response, check prior steps again<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><br>
####<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">## Layer 3/4, verify resolv.conf dns resolution and life beyond default route<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">ping <a href="http://google.com" target="_blank">google.com</a><u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">## If no dns life outside router, check the router has connectivity to the internet<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">####<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">## pull up a browser to <a href="http://google.com" target="_blank">google.com</a> to test layer 4-7 stuff<u></u><u></u></p>
</div>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">On Tue, Jan 3, 2017 at 9:10 AM, Carruth, Rusty <<a href="mailto:Rusty.Carruth@smartm.com" target="_blank">Rusty.Carruth@smartm.com</a>> wrote:<u></u><u></u></p>
<div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I’ll guess that DHCP server on your router was dead.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">But to know for sure - are all your systems using DHCP, or are some using static?</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">IF your windows side is set for static, and the Linux side is DHCP, then this would be expected -
windows works, linux doesn’t.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">But I’m just guessing (however, I had a router once that would lose its DHCP server on a semi-regular
basis. I considered putting it on some sort of auto-reboot device (power cycle it once a day) - finally just replaced the stupid thing ;-)</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Rusty</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> PLUG-discuss [mailto:<a href="mailto:plug-discuss-bounces@lists.phxlinux.org" target="_blank">plug-discuss-bounces@<wbr>lists.phxlinux.org</a>]
<b>On Behalf Of </b>Michael<br>
<b>Sent:</b> Monday, January 02, 2017 1:42 PM<br>
<b>To:</b> PLUG<br>
<b>Subject:</b> Re: Offline</span><u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<div>
<p class="MsoNormal">I'm back. I just had to reset the router..... but why would that work if windows still worked?<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
<div>
<p class="MsoNormal">On Mon, Jan 2, 2017 at 11:31 AM, Michael <<a href="mailto:bmike1@gmail.com" target="_blank">bmike1@gmail.com</a>> wrote:<u></u><u></u></p>
<div>
<p class="MsoNormal">The TV server, also linux, is still online. It is part of the same network.<u></u><u></u></p>
</div>
<div>
<div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
<div>
<p class="MsoNormal">On Jan 2, 2017 11:22 AM, "Michael" <<a href="mailto:bmike1@gmail.com" target="_blank">bmike1@gmail.com</a>> wrote:<u></u><u></u></p>
<div>
<p class="MsoNormal">I am now offline in my Linux box. Windows is up and happy and the modem is up and happy too. Heck, the network connection shows I'm connected too. I don't know what to do. What
led up to this is I was trying something with th faulty SD card. .. grated said to run, chkdsk /f , twice so I boot into Windows to do that ,couldn't do it though. Then when I boot back to Linux to reformat it there was no connectivity.<u></u><u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
<p class="MsoNormal"><br>
<br clear="all">
<u></u><u></u></p>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<p class="MsoNormal">--
<u></u><u></u></p>
<div>
<div>
<div>
<div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt">:-)~MIKE~(-:</span><u></u><u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<p class="MsoNormal"><br>
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