Grade mit meinem Multi-Link-AP kurz nach dem Halt in Hannover Hbf ausprobiert, als der USB-Stick mir Vodafone-SIM LTE signalisierte:
Tue Apr 24 07:34:48 CEST 2012 PING gw-d2.uu.org (193.26.120.206) 56(84) bytes of data. --- gw-d2.uu.org ping statistics --- 10 packets transmitted, 10 received, 0% packet loss, time 9082ms rtt min/avg/max/mdev = 38.021/42.213/51.538/4.231 ms
Zum Vergleich, D1 mit baugleichem Stick (Huawei K5005) und o2 mit Huawei E1550:
Tue Apr 24 07:34:49 CEST 2012 PING gw-d1.uu.org (193.26.120.204) 56(84) bytes of data. --- gw-d1.uu.org ping statistics --- 10 packets transmitted, 10 received, 0% packet loss, time 11814ms rtt min/avg/max/mdev = 216.279/3340.028/7213.291/2193.227 ms, pipe 8/
Tue Apr 24 07:34:49 CEST 2012 PING gw-o2.uu.org (193.26.120.208) 56(84) bytes of data. --- gw-o2.uu.org ping statistics --- 10 packets transmitted, 10 received, 0% packet loss, time 9778ms rtt min/avg/max/mdev = 208.762/291.890/508.182/78.296 ms
Alles, wohlgemerkt, aus dem schon wieder fahrenden ICE.
(Die Verbindung läuft über OpenVPN (per UDP) über dedizierte Endpunkt-IPs an einem Server im ‘Festnetz’, die über die jeweile PPP-Verbindung der USB-Mobilfunkmodems geroutet werden. Das alleine ist schon ein Big Win bei den laufend abbrechenden PPP-Sessions wegen Abdeckungsmangel …)
Ein bißchen später, so in Höhe Gifhorn im ICE 541, sieht das dann allerdings auch anders aus:
Tue Apr 24 07:57:09 CEST 2012 PING gw-d1.uu.org (193.26.120.204) 56(84) bytes of data. --- gw-d1.uu.org ping statistics --- 10 packets transmitted, 10 received, 0% packet loss, time 9006ms rtt min/avg/max/mdev = 10064.308/12367.812/15869.452/1888.586 ms, pipe 10
Tue Apr 24 07:57:08 CEST 2012 PING gw-d2.uu.org (193.26.120.206) 56(84) bytes of data. --- gw-d2.uu.org ping statistics --- 10 packets transmitted, 8 received, 20% packet loss, time 57635ms rtt min/avg/max/mdev = 984.208/2262.540/3884.146/834.960 ms, pipe 3
Tue Apr 24 07:57:07 CEST 2012 PING gw-o2.uu.org (193.26.120.208) 56(84) bytes of data. --- gw-o2.uu.org ping statistics --- 10 packets transmitted, 10 received, 0% packet loss, time 85126ms rtt min/avg/max/mdev = 590.445/1558.000/4091.427/1151.067 ms, pipe 2
Internet im ICE — noch immer ein Abenteuer ;) Zum Abschluß — auch der Reise ;) — nochmal Pings aus dem stehenden ICE im Bahnhof Berlin.-SPandau, mit LTE bei D2:
Tue Apr 24 08:58:11 CEST 2012 PING gw-d1.uu.org (193.26.120.204) 56(84) bytes of data. 64 bytes from gw-d1.uu.org (193.26.120.204): icmp_req=1 ttl=64 time=886 ms 64 bytes from gw-d1.uu.org (193.26.120.204): icmp_req=2 ttl=64 time=1327 ms 64 bytes from gw-d1.uu.org (193.26.120.204): icmp_req=3 ttl=64 time=334 ms 64 bytes from gw-d1.uu.org (193.26.120.204): icmp_req=4 ttl=64 time=107 ms 64 bytes from gw-d1.uu.org (193.26.120.204): icmp_req=5 ttl=64 time=107 ms 64 bytes from gw-d1.uu.org (193.26.120.204): icmp_req=6 ttl=64 time=155 ms 64 bytes from gw-d1.uu.org (193.26.120.204): icmp_req=7 ttl=64 time=94.9 ms 64 bytes from gw-d1.uu.org (193.26.120.204): icmp_req=8 ttl=64 time=103 ms 64 bytes from gw-d1.uu.org (193.26.120.204): icmp_req=9 ttl=64 time=112 ms 64 bytes from gw-d1.uu.org (193.26.120.204): icmp_req=10 ttl=64 time=221 ms --- gw-d1.uu.org ping statistics --- 10 packets transmitted, 10 received, 0% packet loss, time 9494ms rtt min/avg/max/mdev = 94.927/345.152/1327.262/399.590 ms, pipe 2
Tue Apr 24 08:58:11 CEST 2012 PING gw-d2.uu.org (193.26.120.206) 56(84) bytes of data. 64 bytes from gw-d2.uu.org (193.26.120.206): icmp_req=1 ttl=64 time=69.6 ms 64 bytes from gw-d2.uu.org (193.26.120.206): icmp_req=2 ttl=64 time=65.4 ms 64 bytes from gw-d2.uu.org (193.26.120.206): icmp_req=3 ttl=64 time=69.4 ms 64 bytes from gw-d2.uu.org (193.26.120.206): icmp_req=4 ttl=64 time=65.5 ms 64 bytes from gw-d2.uu.org (193.26.120.206): icmp_req=5 ttl=64 time=57.1 ms 64 bytes from gw-d2.uu.org (193.26.120.206): icmp_req=6 ttl=64 time=59.9 ms 64 bytes from gw-d2.uu.org (193.26.120.206): icmp_req=7 ttl=64 time=62.1 ms 64 bytes from gw-d2.uu.org (193.26.120.206): icmp_req=8 ttl=64 time=60.8 ms 64 bytes from gw-d2.uu.org (193.26.120.206): icmp_req=9 ttl=64 time=61.0 ms 64 bytes from gw-d2.uu.org (193.26.120.206): icmp_req=10 ttl=64 time=71.0 ms --- gw-d2.uu.org ping statistics --- 10 packets transmitted, 10 received, 0% packet loss, time 9006ms rtt min/avg/max/mdev = 57.137/64.225/71.063/4.502 ms
Tue Apr 24 08:58:12 CEST 2012 PING gw-o2.uu.org (193.26.120.208) 56(84) bytes of data. 64 bytes from gw-o2.uu.org (193.26.120.208): icmp_req=1 ttl=64 time=687 ms 64 bytes from gw-o2.uu.org (193.26.120.208): icmp_req=2 ttl=64 time=729 ms 64 bytes from gw-o2.uu.org (193.26.120.208): icmp_req=3 ttl=64 time=229 ms 64 bytes from gw-o2.uu.org (193.26.120.208): icmp_req=4 ttl=64 time=559 ms 64 bytes from gw-o2.uu.org (193.26.120.208): icmp_req=5 ttl=64 time=319 ms 64 bytes from gw-o2.uu.org (193.26.120.208): icmp_req=6 ttl=64 time=239 ms 64 bytes from gw-o2.uu.org (193.26.120.208): icmp_req=7 ttl=64 time=239 ms 64 bytes from gw-o2.uu.org (193.26.120.208): icmp_req=8 ttl=64 time=239 ms 64 bytes from gw-o2.uu.org (193.26.120.208): icmp_req=9 ttl=64 time=239 ms 64 bytes from gw-o2.uu.org (193.26.120.208): icmp_req=10 ttl=64 time=239 ms --- gw-o2.uu.org ping statistics --- 10 packets transmitted, 10 received, 0% packet loss, time 9367ms rtt min/avg/max/mdev = 229.667/372.074/729.099/193.154 ms
Leider ist o2 derzeit, was die RTT angeht, deutlichst im Hintertreffen; 200ms bei einer HSPA-Verbindung ist … unzureichend :-(