Can you provide some more detail on your network configuration? I'm unclear if the linux server is your internet router or just another client computer on your local LANIt's network router.
, where the test pings to "the internet" are going (i.e. nexthop router, etc.), and if/where CIPE tunnels are involved in the equation. Perhaps a small network map would be helpful.
No CIPE (whatever is that ;-). Nexthop? You mean gateway?
eth0:1 Link encap:Ethernet HWaddr 00:50:22:B1:67:6D
inet addr:81.7.84.36 Bcast:81.255.255.255 Mask:255.0.0.0
UP BROADCAST RUNNING MULTICAST MTU:1492 Metric:1
Interrupt:10 Base address:0xd000
gateway: 81.7.84.1Map is at http://h2o.pieva.net/net.png
I'm also unclear about the pings that you've tried. After you've shown the network map, perhaps you can identify the two machines (and interfaces) involved in each of the different ping tests you've performed.
The machine is totaly random. x11@rasnet:~$ traceroute fortas.ktu.lt traceroute to fortas.ktu.lt (193.219.160.131), 30 hops max, 38 byte packets 1 adsl-213-190-40-129.takas.lt (213.190.40.129) 26.269 ms 23.333 ms 25.156 ms 2 fe22-acc0-tai.kns.telecom.lt (212.59.7.233) 63.079 ms 33.146 ms 26.117 ms 3 telecom-gw.is.lt (193.219.13.99) 35.978 ms 26.476 ms 103.138 ms 4 litnet-gw.is.lt (193.219.13.98) 22.715 ms 24.531 ms 209.984 ms 5 cat6506-p2-1.kttc.litnet.lt (193.219.62.125) 52.826 ms 98.040 ms 81.609 ms 6 ktu-lan.litnet.lt (193.219.61.252) 38.696 ms 182.582 ms 241.836 ms 7 fortas.ktu.lt (193.219.160.131) 215.523 ms 126.815 ms 29.217 ms
x11@rasnet:~$ traceroute cs.mes.lt traceroute to cs.mes.lt (193.219.67.253), 30 hops max, 38 byte packets 1 adsl-213-190-40-129.takas.lt (213.190.40.129) 748.174 ms 66.331 ms 135.586 ms 2 fe22-acc0-tai.kns.telecom.lt (212.59.7.233) 21.645 ms 21.588 ms 24.597 ms 3 telecom-gw.is.lt (193.219.13.99) 30.584 ms 31.065 ms 29.612 ms 4 litnet-gw.is.lt (193.219.13.98) 24.602 ms 143.212 ms 143.096 ms 5 cat6506-p2-1.kttc.litnet.lt (193.219.62.125) 292.196 ms 163.870 ms 84.549 ms 6 ktu-lan.litnet.lt (193.219.61.252) 84.982 ms 54.801 ms 69.143 ms 7 diz.ktu.lt (193.219.67.253) 33.831 ms 29.877 ms 30.005 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=5 ttl=59 time=34.8 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=6 ttl=59 time=32.6 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=7 ttl=59 time=33.1 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=8 ttl=59 time=324 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=9 ttl=59 time=836 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=10 ttl=59 time=850 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=11 ttl=59 time=321 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=12 ttl=59 time=147 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=13 ttl=59 time=115 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=14 ttl=59 time=118 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=15 ttl=59 time=107 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=16 ttl=59 time=107 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=17 ttl=59 time=272 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=18 ttl=59 time=312 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=19 ttl=59 time=102 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=20 ttl=59 time=107 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=21 ttl=59 time=114 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=22 ttl=59 time=89.8 ms 64 bytes from diz.ktu.lt (193.219.67.253): icmp_seq=23 ttl=59 time=91.2 ms
x11@rasnet:~$ traceroute cs.bbd.lt traceroute to cs.bbd.lt (193.219.184.7), 30 hops max, 38 byte packets 1 adsl-213-190-40-129.takas.lt (213.190.40.129) 23.803 ms 24.813 ms 56.163 ms 2 fe22-acc0-tai.kns.telecom.lt (212.59.7.233) 171.425 ms 21.174 ms 24.321 ms 3 telecom-gw.is.lt (193.219.13.99) 27.882 ms 30.782 ms 26.219 ms 4 litnet-gw.is.lt (193.219.13.98) 22.842 ms 23.025 ms 24.079 ms 5 cat6506-p2-1.kttc.litnet.lt (193.219.62.125) 24.201 ms 25.130 ms 27.256 ms 6 ktu-lan.litnet.lt (193.219.61.252) 26.811 ms 27.362 ms 27.785 ms 7 193.219.184.7 (193.219.184.7) 27.928 ms 29.185 ms 28.067 ms x11@rasnet:~$ ping cs.bbd.lt PING cs.bbd.lt (193.219.184.7) 56(84) bytes of data. 64 bytes from 193.219.184.7: icmp_seq=1 ttl=123 time=133 ms 64 bytes from 193.219.184.7: icmp_seq=2 ttl=123 time=122 ms 64 bytes from 193.219.184.7: icmp_seq=3 ttl=123 time=118 ms 64 bytes from 193.219.184.7: icmp_seq=4 ttl=123 time=109 ms 64 bytes from 193.219.184.7: icmp_seq=5 ttl=123 time=725 ms 64 bytes from 193.219.184.7: icmp_seq=6 ttl=123 time=668 ms 64 bytes from 193.219.184.7: icmp_seq=7 ttl=123 time=120 ms 64 bytes from 193.219.184.7: icmp_seq=8 ttl=123 time=102 ms 64 bytes from 193.219.184.7: icmp_seq=9 ttl=123 time=91.5 ms 64 bytes from 193.219.184.7: icmp_seq=10 ttl=123 time=91.7 ms
I had a similar problem recently. Interestingly, it turned out to be bad hardware.
Another person told me that bad hw could be reason. But it works for LAN perfectly.
> Moved the boot media to an identically
configured machine and the problem went away. Returned the boot media to the original machine and the problem returned.Sad, but i can't do that :(
My /etc/network/interfaces:
auto eth0
iface eth0 inet static
address 192.168.0.1
netmask 255.255.255.0autho eth0:1
iface eth0:1 inet static
address 81.7.84.36
netmask 255.0.0.0
gateway 81.7.84.1
mtu 1492I hadn't set mtu before. After setting it ping times decreased. (afterall it's dsl). Also, what exatcly net/ipv4/tcp_low_latency = 1 in sysctl do?
-- Sincerely, ArtÅras Ålajus ICQ: 157929934 Jabber: arturaz@xxxxxx
Oh, and please'o'please use UTF-8! :-)
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