Ticket ID: SIXXS #845384 Ticket Status: User PoP: uschi02 - Your.Org, Inc. (Chicago, Illinois)
Packet loss / severe latency over tunnel
Shadow Hawkins on Monday, 10 November 2008 14:28:19
Folks:
My tunnel was set up earlier today (T17876) and while the tunnel comes up just fine, there is either some bad packet loss or latency over the tunnel. There does not appear to be any issues between me and the PoP over IPv4, and I can ping my own endpoint just fine. Various command outputs follow since "aiccu test" displays nothing at all on my system.
Let me know if you need more info and as always thanks for your time.
# ifconfig
eth0 Link encap:Ethernet HWaddr 00:b0:d0:71:4b:fb
inet addr:10.50.1.76 Bcast:10.50.7.255 Mask:255.255.248.0
inet6 addr: fe80::2b0:d0ff:fe71:4bfb/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:21013302 errors:0 dropped:0 overruns:1 frame:0
TX packets:13885184 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1122600222 (1.0 GiB) TX bytes:2508436607 (2.3 GiB)
Interrupt:5 Base address:0xe800
eth1 Link encap:Ethernet HWaddr 00:01:02:2b:f2:4b
inet addr:192.168.8.1 Bcast:192.168.8.255 Mask:255.255.255.0
inet6 addr: fe80::201:2ff:fe2b:f24b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:10800665 errors:2 dropped:0 overruns:84 frame:2
TX packets:9848894 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1815089087 (1.6 GiB) TX bytes:2626810198 (2.4 GiB)
Interrupt:10 Base address:0x2c00
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:18703882 errors:0 dropped:0 overruns:0 frame:0
TX packets:18703882 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1266788571 (1.1 GiB) TX bytes:1266788571 (1.1 GiB)
sixxs Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet6 addr: 2001:4978:f:1dd::2/64 Scope:Global
inet6 addr: fe80::4878:f:1dd:2/64 Scope:Link
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1280 Metric:1
RX packets:45 errors:0 dropped:0 overruns:0 frame:0
TX packets:50 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:4680 (4.5 KiB) TX bytes:5200 (5.0 KiB)
# ip -6 route show
2001:4978:f:1dd::/64 dev sixxs metric 256 expires 21334039sec mtu 1280 advmss 1220 hoplimit 4294967295
fe80::/64 dev eth1 metric 256 expires 20076317sec mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev eth0 metric 256 expires 20731146sec mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev sixxs metric 256 expires 21334039sec mtu 1280 advmss 1220 hoplimit 4294967295
ff00::/8 dev eth1 metric 256 expires 20076317sec mtu 1500 advmss 1440 hoplimit 4294967295
ff00::/8 dev eth0 metric 256 expires 20731146sec mtu 1500 advmss 1440 hoplimit 4294967295
ff00::/8 dev sixxs metric 256 expires 21334039sec mtu 1280 advmss 1220 hoplimit 4294967295
default via 2001:4978:f:1dd::1 dev sixxs metric 1024 expires 21334039sec mtu 1280 advmss 1220 hoplimit 4294967295
# netstat -unp
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
udp 0 0 10.50.1.76:1037 216.14.98.22:5072 ESTABLISHED 875/aiccu
# ping -c15 216.14.98.22
PING 216.14.98.22 (216.14.98.22) 56(84) bytes of data.
64 bytes from 216.14.98.22: icmp_seq=1 ttl=50 time=24.5 ms
64 bytes from 216.14.98.22: icmp_seq=2 ttl=50 time=23.2 ms
64 bytes from 216.14.98.22: icmp_seq=3 ttl=50 time=23.9 ms
64 bytes from 216.14.98.22: icmp_seq=4 ttl=50 time=23.2 ms
64 bytes from 216.14.98.22: icmp_seq=5 ttl=50 time=24.8 ms
64 bytes from 216.14.98.22: icmp_seq=6 ttl=50 time=23.8 ms
64 bytes from 216.14.98.22: icmp_seq=7 ttl=50 time=23.1 ms
64 bytes from 216.14.98.22: icmp_seq=8 ttl=50 time=22.9 ms
64 bytes from 216.14.98.22: icmp_seq=9 ttl=50 time=22.6 ms
64 bytes from 216.14.98.22: icmp_seq=10 ttl=50 time=22.2 ms
64 bytes from 216.14.98.22: icmp_seq=11 ttl=50 time=22.3 ms
64 bytes from 216.14.98.22: icmp_seq=12 ttl=50 time=22.4 ms
64 bytes from 216.14.98.22: icmp_seq=13 ttl=50 time=22.8 ms
64 bytes from 216.14.98.22: icmp_seq=14 ttl=50 time=26.1 ms
64 bytes from 216.14.98.22: icmp_seq=15 ttl=50 time=22.3 ms
--- 216.14.98.22 ping statistics ---
15 packets transmitted, 15 received, 0% packet loss, time 14005ms
rtt min/avg/max/mdev = 22.282/23.389/26.106/1.086 ms
# ping6 -c15 2001:4978:f:1dd::2
PING 2001:4978:f:1dd::2(2001:4978:f:1dd::2) 56 data bytes
64 bytes from 2001:4978:f:1dd::2: icmp_seq=1 ttl=64 time=0.091 ms
64 bytes from 2001:4978:f:1dd::2: icmp_seq=2 ttl=64 time=0.064 ms
64 bytes from 2001:4978:f:1dd::2: icmp_seq=3 ttl=64 time=0.098 ms
64 bytes from 2001:4978:f:1dd::2: icmp_seq=4 ttl=64 time=0.092 ms
64 bytes from 2001:4978:f:1dd::2: icmp_seq=5 ttl=64 time=0.076 ms
64 bytes from 2001:4978:f:1dd::2: icmp_seq=6 ttl=64 time=0.095 ms
64 bytes from 2001:4978:f:1dd::2: icmp_seq=7 ttl=64 time=0.092 ms
64 bytes from 2001:4978:f:1dd::2: icmp_seq=8 ttl=64 time=0.093 ms
64 bytes from 2001:4978:f:1dd::2: icmp_seq=9 ttl=64 time=0.102 ms
64 bytes from 2001:4978:f:1dd::2: icmp_seq=10 ttl=64 time=0.080 ms
64 bytes from 2001:4978:f:1dd::2: icmp_seq=11 ttl=64 time=0.095 ms
64 bytes from 2001:4978:f:1dd::2: icmp_seq=12 ttl=64 time=0.093 ms
64 bytes from 2001:4978:f:1dd::2: icmp_seq=13 ttl=64 time=0.078 ms
64 bytes from 2001:4978:f:1dd::2: icmp_seq=14 ttl=64 time=0.089 ms
64 bytes from 2001:4978:f:1dd::2: icmp_seq=15 ttl=64 time=0.088 ms
--- 2001:4978:f:1dd::2 ping statistics ---
15 packets transmitted, 15 received, 0% packet loss, time 13999ms
rtt min/avg/max/mdev = 0.064/0.088/0.102/0.012 ms
# ping6 -c15 2001:4978:f:1dd::1
PING 2001:4978:f:1dd::1(2001:4978:f:1dd::1) 56 data bytes
64 bytes from 2001:4978:f:1dd::1: icmp_seq=1 ttl=64 time=20313 ms
64 bytes from 2001:4978:f:1dd::1: icmp_seq=2 ttl=64 time=19305 ms
64 bytes from 2001:4978:f:1dd::1: icmp_seq=3 ttl=64 time=18305 ms
64 bytes from 2001:4978:f:1dd::1: icmp_seq=4 ttl=64 time=17305 ms
64 bytes from 2001:4978:f:1dd::1: icmp_seq=5 ttl=64 time=16306 ms
64 bytes from 2001:4978:f:1dd::1: icmp_seq=6 ttl=64 time=15306 ms
64 bytes from 2001:4978:f:1dd::1: icmp_seq=7 ttl=64 time=14306 ms
64 bytes from 2001:4978:f:1dd::1: icmp_seq=8 ttl=64 time=13306 ms
64 bytes from 2001:4978:f:1dd::1: icmp_seq=9 ttl=64 time=12306 ms
64 bytes from 2001:4978:f:1dd::1: icmp_seq=10 ttl=64 time=11307 ms
64 bytes from 2001:4978:f:1dd::1: icmp_seq=11 ttl=64 time=10307 ms
64 bytes from 2001:4978:f:1dd::1: icmp_seq=12 ttl=64 time=9307 ms
64 bytes from 2001:4978:f:1dd::1: icmp_seq=13 ttl=64 time=8307 ms
64 bytes from 2001:4978:f:1dd::1: icmp_seq=14 ttl=64 time=7307 ms
64 bytes from 2001:4978:f:1dd::1: icmp_seq=15 ttl=64 time=6308 ms
--- 2001:4978:f:1dd::1 ping statistics ---
15 packets transmitted, 15 received, 0% packet loss, time 14009ms
rtt min/avg/max/mdev = 6308.198/13307.318/20313.729/4320.553 ms, pipe 15
State change: user
Jeroen Massar on Monday, 10 November 2008 15:06:46
The state of this ticket has been changed to user
Packet loss / severe latency over tunnel
Jeroen Massar on Monday, 10 November 2008 15:12:48
I can't reproduce this, do you have more data?
Packet loss / severe latency over tunnel
Shadow Hawkins on Monday, 10 November 2008 16:44:19
Actually, I can't reproduce it anymore either. Maybe it was related to the initial setup of the tunnel. Anyway, sorry for the bother, everything is working great now.
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