Is LinkedIn down?

Frank Bulk frnkblk at iname.com
Sat Aug 16 16:03:17 UTC 2014


Stuart,

You don't tell us if it's www.linkedin.com or linkedin.com, but in any case,
because they serve up that site around the world using some form of GLB it
may resolve to different IP depending on where you are.  From my perspective
it is working via Cogent, and I can hit 108.174.2.129, too:

root at nagios:# tcptraceroute www.linkedin.com
Selected device eth0.3, address 96.31.0.5, port 43355 for outgoing packets
Tracing the path to www.linkedin.com (199.101.163.129) on TCP port 80 (www),
30 hops max
 1  router-core-inside.mtcnet.net (96.31.0.254)  0.253 ms  0.193 ms  0.203
ms
 2  sxct.sxcy.mtcnet.net (167.142.156.197)  0.194 ms  0.131 ms  0.129 ms
 3  premier.sxcy-mlx.fbnt.netins.net (173.215.60.5)  1.632 ms  1.601 ms
1.583 ms
 4  38.104.184.26  7.004 ms  6.373 ms  6.437 ms
 5  te0-0-1-1.rcr11.dsm01.atlas.cogentco.com (38.104.184.25)  5.913 ms
6.083 ms  5.877 ms
 6  te0-2-0-0.ccr41.ord01.atlas.cogentco.com (154.54.46.237)  13.057 ms
13.114 ms  13.075 ms
 7  be2156.ccr21.mci01.atlas.cogentco.com (154.54.6.85)  24.995 ms  24.942
ms  25.053 ms
 8  be2012.ccr21.dfw01.atlas.cogentco.com (154.54.2.114)  35.013 ms  34.942
ms  34.928 ms
 9  be2144.ccr21.iah01.atlas.cogentco.com (154.54.25.105)  40.455 ms  40.749
ms  40.709 ms
10  be2065.ccr21.lax01.atlas.cogentco.com (154.54.5.66)  76.269 ms  76.119
ms  75.970 ms
11  * * *
12  154.24.22.126  76.351 ms  76.296 ms  76.257 ms
13  38.88.244.2  73.135 ms  73.101 ms  73.182 ms
14  border1.po1-20g-bbnet1.lax008.pnap.net (216.52.255.46)  73.354 ms
73.355 ms  73.585 ms
15  linkedin-16.border1.lax008.pnap.net (216.52.220.122)  74.017 ms  74.005
ms  73.965 ms
16  * * *
17  199.101.162.226  74.766 ms  74.391 ms  74.582 ms
18  199.101.163.129 [open]  74.528 ms  74.381 ms  74.421 ms
root at nagios:#


root at nagios:/# tcptraceroute 108.174.2.129
Selected device eth0.3, address 96.31.0.5, port 49338 for outgoing packets
Tracing the path to 108.174.2.129 on TCP port 80 (www), 30 hops max
 1  router-core-inside.mtcnet.net (96.31.0.254)  0.295 ms  0.210 ms  0.237
ms
 2  sxct.spnc.mtcnet.net (167.142.156.194)  0.206 ms  0.144 ms  0.129 ms
 3  premier.spnc-mlx.fbnt.netins.net (173.215.60.1)  15.282 ms  4.743 ms
4.750 ms
 4  ins-kb3-et-0-7-0-0.kmrr.netins.net.67.142.167.in-addr.arpa
(167.142.67.50)  8.787 ms  8.705 ms  8.505 ms
 5  ins-kc2-et-9-3.kmrr.netins.net (167.142.67.49)  7.170 ms  7.183 ms
7.189 ms
 6  ins-dc1-po20.desm.netins.net (167.142.67.29)  7.623 ms  8.936 ms  8.135
ms
 7  207.87.180.149  12.733 ms  52.226 ms  12.740 ms
 8  ae1d0.mcr1.minneapolis-mn.us.xo.net (216.156.1.85)  23.368 ms  22.132 ms
22.052 ms
 9  vb1710.rar3.chicago-il.us.xo.net (216.156.0.169)  22.984 ms  23.536 ms
24.016 ms
10  207.88.14.194.ptr.us.xo.net (207.88.14.194)  21.861 ms  21.882 ms
21.880 ms
11  206.111.2.65.ptr.us.xo.net (206.111.2.65)  23.583 ms  22.722 ms  22.876
ms
12  ae-8.r05.chcgil09.us.bb.gin.ntt.net (129.250.4.221)  22.630 ms  22.751
ms  22.817 ms
13  165.254.191.82  22.760 ms  22.726 ms  22.722 ms
14  * * *
15  * * *
16  108.174.2.129 [open]  36.065 ms  36.058 ms  36.042 ms
root at nagios:/#


root at nagios:/usr/lib/nagios/plugins# ./check_http -H www.linkedin.com -I
199.101.163.129
HTTP OK: HTTP/1.1 301 Moved Permanently - 1706 bytes in 0.167 second
response time |time=0.166917s;;;0.000000 size=1706B;;;0
root at nagios:/usr/lib/nagios/plugins#
root at nagios:/usr/lib/nagios/plugins# ./check_http -H www.linkedin.com -I
108.174.2.129
HTTP OK: HTTP/1.1 301 Moved Permanently - 1702 bytes in 0.088 second
response time |time=0.088261s;;;0.000000 size=1702B;;;0
root at nagios:/usr/lib/nagios/plugins#

Regards,

Frank

-----Original Message-----
From: NANOG [mailto:nanog-bounces at nanog.org] On Behalf Of stuart clark
Sent: Saturday, August 16, 2014 10:30 AM
To: nanog at nanog.org
Subject: Is LinkedIn down?

Trace/tcptrace to 108.174.2.129  via Level3 - last hop is on the
Linked/Level3 edge:

14  LINKEDIN-CO.edge3.Washington4.Level3.net (4.53.116.150)  76.034 ms
 76.069 ms  76.066 ms


Via telia.net

 16   236 ms   221 ms     *     linkedin-ic-301441-ash-b1.c.telia.net
[213.248.103.190]
 17     *        *        *     Request timed out.
 18   259 ms   265 ms     *     108.174.2.129
 19   257 ms   299 ms   256 ms  108.174.2.129

No reply from LinkedIn support, but i see plenty of Verizon and Level3
customers cannot access LinkedIn for 24 hrs.
216.52.242.113 works ok.


-SC (ASN25605)




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