[Gllug] Weird network behaviour

[Andy Farnsworth]

Rich Walker wrote:

>This one is baffling me.
>
>I have a box at work with a 40MB email waiting for me. Fetchmail is
>downloading it at the rate of one small burst of data every 30s or more.
>
>The setup is: laptop -> wireless -> router -> adsl -> internet -> adsl
>-> router -> ethernet ->server
>
>When I ping the server, i suddenly get almost continuous transmission of
>data to fetchmail.
>
>Typical ping output:
>64 bytes from 84.45.206.219: icmp_seq=139 ttl=54 time=1018.5 ms
>64 bytes from 84.45.206.219: icmp_seq=140 ttl=54 time=1027.5 ms
>64 bytes from 84.45.206.219: icmp_seq=141 ttl=54 time=38.7 ms
>64 bytes from 84.45.206.219: icmp_seq=142 ttl=54 time=1060.7 ms
>64 bytes from 84.45.206.219: icmp_seq=143 ttl=54 time=1010.1 ms
>64 bytes from 84.45.206.219: icmp_seq=144 ttl=54 time=1014.1 ms
>64 bytes from 84.45.206.219: icmp_seq=145 ttl=54 time=1010.4 ms
>64 bytes from 84.45.206.219: icmp_seq=146 ttl=54 time=26.6 ms
>64 bytes from 84.45.206.219: icmp_seq=147 ttl=54 time=30.8 ms
>64 bytes from 84.45.206.219: icmp_seq=148 ttl=54 time=38.6 ms
>
>If I stop the ping, the connection drops to "pitiful" again.
>
>Traceroute looks like:
>
>traceroute to shadowrobot.dnsalias.org (84.45.206.219), 30 hops max, 40 byte packets
> 1  192.168.123.254 (192.168.123.254)  2.997 ms  2.511 ms  2.724 ms
> 2  * gsr01-hr.blueyonder.co.uk (62.30.144.33)  34.359 ms *
> 3  pc-62-30-250-10-ha.blueyonder.co.uk (62.30.250.10)  33.519 ms  49.224 ms  103.751 ms
> 4  * tele2-har-pos.telewest.net (194.117.136.26)  73.126 ms *
> 5  linx-gw1.enta.net (195.66.226.151)  130.830 ms *  56.106 ms
> 6  telehouse-east2.core.enta.net (84.45.193.196)  1279.980 ms  973.691 ms  1005.030 ms
> 7  gw2.dsl.enta.net (62.249.192.126)  43.975 ms  99.573 ms  808.103 ms
> 8  gw1.dsl.enta.net (62.249.255.161)  43.877 ms  48.805 ms  64.905 ms
> 9  lns10.dsl.enta.net (62.249.255.133)  891.087 ms  958.085 ms  1006.589 ms
>10  84-45-206-217.no-dns-yet.enta.net (84.45.206.217)  1002.898 ms  1000.682 ms  33.663 ms
>11  * * *
>
>Anyone got any ideas?
>
>cheers, Rich. 
>  
>
Rich,
  My company has been having very slow internet connectivy today so I 
have to wonder if this is an issue with a telewest.  Ours appears to 
have cleared up after a while.

Andy
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