Network Testing Page

Traceroute output

Below is the output from two traceroutes as well as some descriptive text regarding how to interpret this output. Traceroute displays the hops data must travel on the Internet between routers to pass from source to destination. Each line represents one hop.

Asterisks reported instead of times in the display below are an indication that a packet is taking more than 2 seconds to travel between routers. Each line indicates one more routed segment a packet takes between site of origination and destination.

If asterisks are being displayed on line one, then GSLIS's connection from the building to the first router (the gateway) is having a problem. If astericks are occuring over the next several hops, then the University is having problems with it's network. Either way, CITES should already be working on the problem. If astericks occur later on in the traceroute, then the problem is elsewhere on the Internet.

Traceroute to argus.cso.uiuc.edu

This is a traceroute to the place at CITES that we get our information on Internet names and Internet addresses. If this fails, then anything that depends on that information is probably also having problems

Please wait while traceroute is being run. I'll put up in bold echo "the word 'FINISHED' at the end of the output

traceroute to argus.cso.uiuc.edu (128.174.5.58), 30 hops max, 38 byte packets
 1  uiuc-gslis-net.gw.uiuc.edu (128.174.154.1)  0.298 ms  0.270 ms  0.293 ms
 2  t-dist4-1.gw.uiuc.edu (172.20.23.1)  9.134 ms  0.307 ms  0.307 ms
 3  t-core1.gw.uiuc.edu (172.20.20.13)  0.433 ms  0.314 ms  0.325 ms
 4  t-core2.gw.uiuc.edu (172.20.20.2)  0.427 ms  0.411 ms  0.462 ms
 5  172.20.20.22 (172.20.20.22)  0.471 ms  0.397 ms  0.397 ms
 6  t-bd-citesdc1.gw.uiuc.edu (172.20.20.210)  0.822 ms  0.813 ms  0.816 ms
 7  argus.cso.uiuc.edu (128.174.5.58)  0.475 ms  0.465 ms  0.471 ms

FINISHED with traceroute to argus.cso.uiuc.edu

Traceroute to www.internic.net

This is a traceroute to a site out on the Internet, and should be a good indication of whether the University's outside connection is up and running. It happens to be a traceroute to one of the web server for one of the main Network Information Centers on the Internet

Please wait while traceroute is being run. I'll put up in bold the word 'FINISHED' at the end of the output

traceroute to www.internic.net (208.77.188.101), 30 hops max, 38 byte packets
 1  uiuc-gslis-net.gw.uiuc.edu (128.174.154.1)  0.321 ms  0.277 ms  0.275 ms
 2  t-dist4-2.gw.uiuc.edu (172.20.23.26)  0.430 ms  0.388 ms  0.342 ms
 3  uiuc-core2-dist41-lnk.gw.uiuc.edu (172.20.20.29)  0.391 ms  0.370 ms  0.350 ms
 4  t-exitib.gw.uiuc.edu (130.126.0.166)  0.446 ms  0.367 ms  0.361 ms
 5  t-fwo.gw.uiuc.edu (130.126.0.14)  0.495 ms  0.447 ms  0.441 ms
 6  uiuc-exite-fw-net.gw.uiuc.edu (130.126.0.30)  0.707 ms  1.026 ms  0.709 ms
 7  t-dmzo.gw.uiuc.edu (130.126.0.70)  1.318 ms  0.947 ms  1.229 ms
 8  ur1rtr-uiuc.ex.ui-iccn.org (72.36.127.1)  1.724 ms  0.738 ms  0.737 ms
 9  t-710rtr.ix.ui-iccn.org (72.36.126.102)  3.613 ms  3.406 ms  3.679 ms
10  i2-cps.ex.ui-iccn.org (72.36.127.138)  15.930 ms  4.177 ms  6.343 ms
11  equinix-chi.he.net (206.223.119.37)  4.719 ms  4.732 ms  15.272 ms
12  10gigabitethernet3-2.core1.sjc2.he.net (72.52.92.73)  66.302 ms  66.259 ms  67.385 ms
13  10gigabitethernet3-2.core1.pao1.he.net (72.52.92.69)  66.242 ms  66.788 ms  69.109 ms
14  10gigabitethernet1-1.core1.lax1.he.net (72.52.92.22)  82.295 ms  81.337 ms  76.250 ms
15  216.218.214.66 (216.218.214.66)  80.687 ms  75.097 ms  74.910 ms
16  188-101.lax.icann.org (208.77.188.101)  74.606 ms !<10>  74.461 ms !<10>  74.280 ms !<10>

FINISHED with traceroute to www.internic.net

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