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Ticket ID: SIXXS #968114 Ticket Status: Resolved PoP: nlede01 - BIT BV (Ede)
Packet loss to nlede01
![[nl]](/s/countries/nl.gif) Shadow Hawkins on Saturday, 07 February 2009 14:48:22
[Admin-edit: was/is problem at ISP of user]
Since the upgrade of POP nlede01, I have noticed increased packet loss (up to 30%) on my tunnel, T17641. Checking with the SixXS latency page http://www.sixxs.net/misc/latency/, also showing loss, I noticed that nlede01 has increased packet-loss since the upgrade with all POP's (compared over the last 2 weeks).
I monitor my internet connection as well using Smokeping, showing no loss at all over the past month. Connection info:
Internet over ADSL 4MBit/1MBit, connected to bridging (no NAT) router ASUS WL604g, connected to Server eth0, bridged to "inet" interface, having the public IP-address 85.145.112.171. My handle is SDH2-SIXXS.
Output of relevant commands:
uname -a:
Linux pluk 2.6.25.14 #18 Sun Oct 19 20:06:40 CEST 2008 i686 Intel(R) Pentium(R) 4 CPU 2.80GHz GenuineIntel GNU/Linux
Distribution: Gentoo Linux x86 2008.0
ifconfig:
eth0 Link encap:Ethernet HWaddr 00:50:04:7F:C6:E4
inet6 addr: fe80::250:4ff:fe7f:c6e4/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:5558689 errors:1 dropped:0 overruns:0 frame:1
TX packets:4569776 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2208146906 (2105.8 Mb) TX bytes:404561134 (385.8 Mb)
Interrupt:17 Base address:0xe000
eth1 Link encap:Ethernet HWaddr 00:0E:A6:0C:D8:6F
inet6 addr: fe80::20e:a6ff:fe0c:d86f/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:32418193 errors:0 dropped:1 overruns:0 frame:0
TX packets:18030109 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3360560200 (3204.8 Mb) TX bytes:1264395157 (1205.8 Mb)
Interrupt:18
gn0 Link encap:Ethernet HWaddr 72:09:5F:A8:BA:FB
inet addr:192.168.253.1 Bcast:192.168.253.255 Mask:255.255.255.0
inet6 addr: fe80::7009:5fff:fea8:bafb/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:452 (452.0 b)
inet Link encap:Ethernet HWaddr 00:50:04:7F:C6:E4
inet addr:85.145.112.171 Bcast:85.145.115.255 Mask:255.255.252.0
inet6 addr: fe80::250:4ff:fe7f:c6e4/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5558684 errors:0 dropped:0 overruns:0 frame:0
TX packets:4569774 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2130112789 (2031.4 Mb) TX bytes:388156134 (370.1 Mb)
lan Link encap:Ethernet HWaddr 00:0E:A6:0C:D8:6F
inet addr:192.168.8.1 Bcast:192.168.8.255 Mask:255.255.255.0
inet6 addr: 2001:7b8:320::1/0 Scope:Global
inet6 addr: fe80::20e:a6ff:fe0c:d86f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:32531382 errors:0 dropped:0 overruns:0 frame:0
TX packets:18357557 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2776052843 (2647.4 Mb) TX bytes:1636348982 (1560.5 Mb)
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:664587 errors:0 dropped:0 overruns:0 frame:0
TX packets:664587 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:78731856 (75.0 Mb) TX bytes:78731856 (75.0 Mb)
sit1 Link encap:IPv6-in-IPv4
inet6 addr: 2001:7b8:2ff:265::2/0 Scope:Global
inet6 addr: fe80::c0a8:801/64 Scope:Link
inet6 addr: fe80::c0a8:fd01/64 Scope:Link
inet6 addr: fe80::5591:70ab/64 Scope:Link
UP POINTOPOINT RUNNING NOARP MTU:1480 Metric:1
RX packets:200285 errors:0 dropped:0 overruns:0 frame:0
TX packets:126380 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:226506556 (216.0 Mb) TX bytes:11808282 (11.2 Mb)
tap0 Link encap:Ethernet HWaddr 00:FF:03:BD:AF:D2
inet6 addr: fe80::2ff:3ff:febd:afd2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:402 errors:0 dropped:0 overruns:0 frame:0
TX packets:126095 errors:0 dropped:2538 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:50781 (49.5 Kb) TX bytes:19332850 (18.4 Mb)
brctl show:
bridge name bridge id STP enabled interfaces
gn0 8000.000000000000 no
inet 07d0.0050047fc6e4 no eth0
lan 03e8.000ea60cd86f no eth1
tap0
ip route show:
192.168.253.0/24 dev gn0 proto kernel scope link src 192.168.253.1
192.168.8.0/24 dev lan proto kernel scope link src 192.168.8.1
85.145.112.0/22 dev inet scope link metric 1000
127.0.0.0/8 dev lo scope link
default via 85.145.112.1 dev inet metric 1000
ip -f inet6 route show:
2001:7b8:320::/64 dev lan metric 1024 expires 20392608sec mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev eth0 metric 256 expires 20156217sec mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev inet metric 256 expires 20156219sec mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev eth1 metric 256 expires 20156221sec mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev lan metric 256 expires 20156222sec mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev gn0 metric 256 expires 20156242sec mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 via :: dev sit1 metric 256 expires 20391293sec mtu 1480 advmss 1420 hoplimit 4294967295
fe80::/64 dev tap0 metric 256 expires 20412791sec mtu 1500 advmss 1440 hoplimit 4294967295
ff00::/8 dev eth0 metric 256 expires 20156217sec mtu 1500 advmss 1440 hoplimit 4294967295
ff00::/8 dev inet metric 256 expires 20156219sec mtu 1500 advmss 1440 hoplimit 4294967295
ff00::/8 dev eth1 metric 256 expires 20156221sec mtu 1500 advmss 1440 hoplimit 4294967295
ff00::/8 dev lan metric 256 expires 20156222sec mtu 1500 advmss 1440 hoplimit 4294967295
ff00::/8 dev gn0 metric 256 expires 20156242sec mtu 1500 advmss 1440 hoplimit 4294967295
ff00::/8 dev sit1 metric 256 expires 20391293sec mtu 1480 advmss 1420 hoplimit 4294967295
ff00::/8 dev tap0 metric 256 expires 20412791sec mtu 1500 advmss 1440 hoplimit 4294967295
default via :: dev sit1 metric 256 expires 20391293sec mtu 1480 advmss 1420 hoplimit 4294967295
ip tunnel show:
tunl0: ip/ip remote any local any ttl inherit nopmtudisc
gre0: gre/ip remote any local any ttl inherit nopmtudisc
sit0: ipv6/ip remote any local any ttl 64 nopmtudisc
sit1: ipv6/ip remote 193.109.122.244 local any ttl 64
traceroute 193.109.122.244:
traceroute to 193.109.122.244 (193.109.122.244), 30 hops max, 40 byte packets
1 s55917001.adsl.wanadoo.nl (85.145.112.1) 31.101 ms 32.077 ms 32.931 ms
2 V748.dr3-asd6.nl.euro.net (194.134.154.217) 42.212 ms 43.759 ms 44.887 ms
3 * PC19.cr1-asd6.nl.euro.net (194.134.161.57) 47.290 ms *
4 PC16.er1-asd4.nl.euro.net (194.134.161.100) 49.534 ms 50.395 ms 52.000 ms
5 amsix-501.xe-0-0-0.jun1.galilei.network.bit.nl (195.69.144.35) 54.603 ms 55.699 ms 57.069 ms
6 nlede01.sixxs.net (193.109.122.244) 58.436 ms 45.943 ms 41.758 ms
traceroute6 2001:7b8:2ff:265::1 :
traceroute to 2001:7b8:2ff:265::1 (2001:7b8:2ff:265::1) from 2001:7b8:2ff:265::2, 30 hops max, 16 byte packets
1 gw-614.ede-01.nl.sixxs.net (2001:7b8:2ff:265::1) 42.612 ms 42.068 ms 41.669 ms
I will include firewall output in a seperate post.
Increased Packet loss since hardware replacement
Shadow Hawkins on Friday, 06 February 2009 11:09:50
I am not including the entire firewall output in this ticket, but I provided links to where they can be found:
iptables -t filter -vnL
iptables -t nat -vnL
ip6tables -t filter -vnL
Thank you in advance for your time and effort.
Kind regards,
Simon de Hartog
State change: user
The state of this ticket has been changed to user
Increased Packet loss since hardware replacement
Packetloss where?
There are most very likely quite a few hops between you and the PoP.
At any of these points there might be packetloss.
Use a tool like 'mtr' to determine where this might happen.
Increased Packet loss since hardware replacement
Shadow Hawkins on Saturday, 07 February 2009 14:45:51
After running mtr, the following information was displayed:
mtr nlede01.sixxs.net:
Host Loss%
1. s55917001.adsl.wanadoo.nl 0.0%
2. V748.dr3-asd6.nl.euro.net 0.0%
3. PC19.cr1-asd6.nl.euro.net 58.1%
4. PC16.er1-asd4.nl.euro.net 0.0%
5. amsix-501.xe-0-0-0.jun1.galilei.network.bit.nl 0.0%
6. nlede01.sixxs.net 0.0%
The third hop seems to give a lot of packet-loss. After contacting my internet provider they confirmed that KPN is having problems and are trying to fix it. My sincere apologies for bothering you with this problem. Thank you for the "mtr" tip and the great free IPv6 services.
Kind regards,
Simon de Hartog
State change: resolved
The state of this ticket has been changed to resolved
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![[ch]](/s/countries/ch.gif)
on Saturday, 07 February 2009 13:15:54
Posting is only allowed when you are