Tracing route to 24.29.97.25 over a maximum of 30 hops



  1    <1 ms    <1 ms    <1 ms  mudd-edge-1-vlan236-5.net.columbia.edu [128.59.51.1] 

  2     *       39 ms     1 ms  nyser-gw.net.columbia.edu [128.59.1.4] 

  3   187 ms   183 ms   190 ms  67.99.58.193 

  4   201 ms   199 ms   200 ms  216.140.10.29 

  5   225 ms   216 ms   200 ms  pop1-nye-P12-2.atdn.net [66.185.149.201] 

  6   186 ms   185 ms   187 ms  bb1-nye-P0-0.atdn.net [66.185.151.48] 

  7   202 ms   209 ms   210 ms  bb2-new-P5-0.atdn.net [66.185.152.197] 

  8   215 ms   224 ms   214 ms  pop1-new-P1-0.atdn.net [66.185.137.3] 

  9   214 ms   214 ms   206 ms  rr-queens.atdn.net [66.185.137.14] 

 10   221 ms   220 ms   212 ms  pos0-0-nycmnyc-rtr2.nyc.rr.com [24.29.97.18] 

 11   221 ms   222 ms   225 ms  pos4-0.nycmnyc-rtr2.nyc.rr.com [24.29.101.218] 

 12   221 ms   225 ms   219 ms  pos4-0-nycmnya-rtr2.nyc.rr.com [24.29.101.249] 

 13   221 ms   217 ms   205 ms  24.29.97.25 



Trace complete.




: bart.cs.columbia.edu ;ping -P 0x06 24.29.97.25
24.29.97.25 is alive
: bart.cs.columbia.edu ;

: bart.cs.columbia.edu ;tcpdump -n -v -v
14:09:58.661178 128.59.19.191 > 24.29.97.25: icmp: echo request (DF) [tos 0x6,ECT(0)]  (ttl 255, id 6862, len 84)
14:09:58.883864 24.29.97.25 > 128.59.19.191: icmp: echo reply (DF) [tos 0x2,ECT(0)]  (ttl 250, id 6862, len 84)