Sehr lahme Verbindung bei Unitymedia

Vor kurzem hatte ich über Tage eine sehr langsame Internetanbindung via Unitymedia.

Eine kurze Recherche ergab:

host ~ $ ping 98.125.3.18
PING 98.125.3.18 (98.125.3.18): 56 data bytes
Request timeout for icmp_seq 0
64 bytes from 98.125.3.18: icmp_seq=0 ttl=241 time=1025.347 ms
64 bytes from 98.125.3.18: icmp_seq=1 ttl=241 time=632.486 ms
64 bytes from 98.125.3.18: icmp_seq=2 ttl=241 time=1025.632 ms
64 bytes from 98.125.3.18: icmp_seq=3 ttl=241 time=1024.346 ms
64 bytes from 98.125.3.18: icmp_seq=4 ttl=241 time=756.945 ms
64 bytes from 98.125.3.18: icmp_seq=5 ttl=241 time=1023.994 ms
64 bytes from 98.125.3.18: icmp_seq=6 ttl=241 time=22.835 ms
64 bytes from 98.125.3.18: icmp_seq=7 ttl=241 time=1022.648 ms
64 bytes from 98.125.3.18: icmp_seq=8 ttl=241 time=21.347 ms
64 bytes from 98.125.3.18: icmp_seq=9 ttl=241 time=1025.470 ms
64 bytes from 98.125.3.18: icmp_seq=10 ttl=241 time=1023.611 ms
64 bytes from 98.125.3.18: icmp_seq=11 ttl=241 time=1025.044 ms
64 bytes from 98.125.3.18: icmp_seq=12 ttl=241 time=1027.253 ms
64 bytes from 98.125.3.18: icmp_seq=13 ttl=241 time=1025.359 ms
64 bytes from 98.125.3.18: icmp_seq=14 ttl=241 time=1023.642 ms
64 bytes from 98.125.3.18: icmp_seq=15 ttl=241 time=1023.628 ms
64 bytes from 98.125.3.18: icmp_seq=16 ttl=241 time=1024.995 ms
64 bytes from 98.125.3.18: icmp_seq=17 ttl=241 time=1026.398 ms
64 bytes from 98.125.3.18: icmp_seq=18 ttl=241 time=1021.975 ms
64 bytes from 98.125.3.18: icmp_seq=19 ttl=241 time=1023.811 ms
^C
--- 98.125.3.18 ping statistics ---
21 packets transmitted, 20 packets received, 4.8% packet loss
round-trip min/avg/max/stddev = 21.347/891.338/1027.253/306.618 ms
host ~ $ ping 85.198.240.100
PING 85.198.240.100 (85.198.240.100): 56 data bytes
64 bytes from 85.198.240.100: icmp_seq=0 ttl=246 time=39.489 ms
Request timeout for icmp_seq 1
64 bytes from 85.198.240.100: icmp_seq=1 ttl=246 time=1028.623 ms
64 bytes from 85.198.240.100: icmp_seq=2 ttl=246 time=1032.219 ms
64 bytes from 85.198.240.100: icmp_seq=3 ttl=246 time=1031.648 ms
64 bytes from 85.198.240.100: icmp_seq=4 ttl=246 time=30.382 ms
64 bytes from 85.198.240.100: icmp_seq=5 ttl=246 time=1030.838 ms
64 bytes from 85.198.240.100: icmp_seq=6 ttl=246 time=542.186 ms
64 bytes from 85.198.240.100: icmp_seq=7 ttl=246 time=1037.318 ms
64 bytes from 85.198.240.100: icmp_seq=8 ttl=246 time=1029.478 ms
64 bytes from 85.198.240.100: icmp_seq=9 ttl=246 time=1031.004 ms
64 bytes from 85.198.240.100: icmp_seq=10 ttl=246 time=1032.399 ms
64 bytes from 85.198.240.100: icmp_seq=11 ttl=246 time=31.234 ms
^C
--- 85.198.240.100 ping statistics ---
13 packets transmitted, 12 packets received, 7.7% packet loss
round-trip min/avg/max/stddev = 30.382/741.402/1037.318/429.772 ms
host ~ $ ping 85.198.240.100
PING 85.198.240.100 (85.198.240.100): 56 data bytes
Request timeout for icmp_seq 0
64 bytes from 85.198.240.100: icmp_seq=0 ttl=246 time=1031.981 ms
64 bytes from 85.198.240.100: icmp_seq=1 ttl=246 time=1031.126 ms
64 bytes from 85.198.240.100: icmp_seq=2 ttl=246 time=1031.990 ms
64 bytes from 85.198.240.100: icmp_seq=3 ttl=246 time=441.734 ms
64 bytes from 85.198.240.100: icmp_seq=4 ttl=246 time=1031.156 ms
64 bytes from 85.198.240.100: icmp_seq=5 ttl=246 time=1030.737 ms
64 bytes from 85.198.240.100: icmp_seq=6 ttl=246 time=29.710 ms
64 bytes from 85.198.240.100: icmp_seq=7 ttl=246 time=1030.131 ms
64 bytes from 85.198.240.100: icmp_seq=8 ttl=246 time=444.157 ms
^C
--- 85.198.240.100 ping statistics ---
10 packets transmitted, 9 packets received, 10.0% packet loss
round-trip min/avg/max/stddev = 29.710/789.191/1031.990/360.241 ms
host ~ $ ping 85.198.240.100
PING 85.198.240.100 (85.198.240.100): 56 data bytes
ping: sendto: No route to host
ping: sendto: No route to host
Request timeout for icmp_seq 0
^C
--- 85.198.240.100 ping statistics ---
2 packets transmitted, 0 packets received, 100.0% packet loss

lange und unregelmässige ping-Zeiten und ca. 10% packet lost.

Ein Reboot des Kabelmodems hat geholfen:

host ~ $ ping 85.198.240.100
PING 85.198.240.100 (85.198.240.100): 56 data bytes
64 bytes from 85.198.240.100: icmp_seq=0 ttl=246 time=30.620 ms
64 bytes from 85.198.240.100: icmp_seq=1 ttl=246 time=32.083 ms
64 bytes from 85.198.240.100: icmp_seq=2 ttl=246 time=30.796 ms
64 bytes from 85.198.240.100: icmp_seq=3 ttl=246 time=30.066 ms
64 bytes from 85.198.240.100: icmp_seq=4 ttl=246 time=29.093 ms
64 bytes from 85.198.240.100: icmp_seq=5 ttl=246 time=29.972 ms
64 bytes from 85.198.240.100: icmp_seq=6 ttl=246 time=30.649 ms
64 bytes from 85.198.240.100: icmp_seq=7 ttl=246 time=28.182 ms
64 bytes from 85.198.240.100: icmp_seq=8 ttl=246 time=29.747 ms
64 bytes from 85.198.240.100: icmp_seq=9 ttl=246 time=27.457 ms
64 bytes from 85.198.240.100: icmp_seq=10 ttl=246 time=30.196 ms
64 bytes from 85.198.240.100: icmp_seq=11 ttl=246 time=32.013 ms
64 bytes from 85.198.240.100: icmp_seq=12 ttl=246 time=28.708 ms
^C
--- 85.198.240.100 ping statistics ---
13 packets transmitted, 13 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 27.457/29.968/32.083/1.306 ms
host ~ $ ping 85.198.240.100
PING 85.198.240.100 (85.198.240.100): 56 data bytes
64 bytes from 85.198.240.100: icmp_seq=0 ttl=246 time=29.859 ms
64 bytes from 85.198.240.100: icmp_seq=1 ttl=246 time=38.574 ms
64 bytes from 85.198.240.100: icmp_seq=2 ttl=246 time=27.871 ms
64 bytes from 85.198.240.100: icmp_seq=3 ttl=246 time=26.464 ms
64 bytes from 85.198.240.100: icmp_seq=4 ttl=246 time=29.330 ms
64 bytes from 85.198.240.100: icmp_seq=5 ttl=246 time=108.001 ms
64 bytes from 85.198.240.100: icmp_seq=6 ttl=246 time=30.294 ms
^C
--- 85.198.240.100 ping statistics ---
7 packets transmitted, 7 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 26.464/41.485/108.001/27.391 ms