Message boards : Number crunching : Can't reach LCH@home
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Gary Charpentier

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Message 20643 - Posted: 10 Oct 2008, 17:44:51 UTC
Last modified: 10 Oct 2008, 17:46:07 UTC

I have machines at two locations. At one I have no problem getting to LHC@home. The other can't reach it. I reach as far as dewberry-ebrc.core-net.qmul.ac.uk [138.37.3.204] as hop 19. I see my other machine gets there as hop 16. Don't know why one stops there and the other gets through.

Gary
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Message 20645 - Posted: 11 Oct 2008, 2:01:19 UTC - in response to Message 20643.  

I have machines at two locations. At one I have no problem getting to LHC@home. The other can\'t reach it. I reach as far as dewberry-ebrc.core-net.qmul.ac.uk [138.37.3.204] as hop 19. I see my other machine gets there as hop 16. Don\'t know why one stops there and the other gets through.

Gary



Well, it works from Canada. connecting thru sprintlink, telia, and \'ja\'.

7]
20 194 ms 191 ms 191 ms dewberry-ebr3.core-net.qmul.ac.uk [138.37.3.204]

21 195 ms 191 ms 191 ms hepboinc.ph.qmul.ac.uk [138.37.50.115]

Trace complete.

C:\\Users\\a>When you run that tracert command, does the first line verify that IP that you\'re connecting to? If not, then perhaps the second computer\'s DNS is different.
Does your tracert have a maximum number of hops equal to where it stops?

\"Tracing route to hepboinc.ph.qmul.ac.uk [138.37.50.115]
over a maximum of 30 hops:\"
Myself, I use openDNS.

You could also make sure that your IP configuration doesn\'t have a TTL value set to 20.
http://secfr.nerim.net/docs/fingerprint/en/ttl_default.html



I'm not the LHC Alex. Just a number cruncher like everyone else here.
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Gary Charpentier

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Message 20653 - Posted: 12 Oct 2008, 17:44:06 UTC - in response to Message 20645.  
Last modified: 12 Oct 2008, 17:44:41 UTC

I have machines at two locations. At one I have no problem getting to LHC@home. The other can\\\'t reach it. I reach as far as dewberry-ebrc.core-net.qmul.ac.uk [138.37.3.204] as hop 19. I see my other machine gets there as hop 16. Don\\\'t know why one stops there and the other gets through.

Gary



Well, it works from Canada. connecting thru sprintlink, telia, and \\\'ja\\\'.

7]
20 194 ms 191 ms 191 ms dewberry-ebr3.core-net.qmul.ac.uk [138.37.3.204]

21 195 ms 191 ms 191 ms hepboinc.ph.qmul.ac.uk [138.37.50.115]

Trace complete.

C:\\\\Users\\\\a>When you run that tracert command, does the first line verify that IP that you\\\'re connecting to? If not, then perhaps the second computer\\\'s DNS is different.
Does your tracert have a maximum number of hops equal to where it stops?

\\\"Tracing route to hepboinc.ph.qmul.ac.uk [138.37.50.115]
over a maximum of 30 hops:\\\"
Myself, I use openDNS.

You could also make sure that your IP configuration doesn\\\'t have a TTL value set to 20.
http://secfr.nerim.net/docs/fingerprint/en/ttl_default.html



IP numbers match, not a DNS problem (my first thought)
Tracert shows 30 returns. All the rest were the * * * kind.
Only recent local change is SP3 for XP Pro. Web page you sent me to is so out of date it doesn't even list XP however another reference indicates the default is 128.
The machine is trying to report a completed work unit so it obviously has connected in the past.
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Message boards : Number crunching : Can't reach LCH@home


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