Re: Mersenne: Mprime Error 2250

1999-10-12 Thread Attila Megyeri


On Mon, 11 Oct 1999, Brian J. Beesley wrote:

> Tip for diagnosis of problems: entropia.com's IP address is 
> 207.104.25.155 (though this isn't fixed, it shouldn't change often). 
> If you're getting problems connecting to entropia.com, try pinging 
> the numeric IP address; if that works, try pinging by name. If the 
> first fails, there is a network fault; if the second fails, there is 
> a fault in the DNS configuration or server; if both work, you *may* 
> have an application error (though there's still a chance that the 
> server isn't running the appropriate protocol for your application).

I've just tried to use sprime v19 under Debian 2.1 (kernel 2.2.12) and
also get the following error message immediately following 'mprime -c': 
   ^^^
---
Updating user information on the server
ERROR 2250: Server unavailable
The FAQ at http://www.entropia.com/ips/faq.html may have more information.
---

Pinging entropia.com:

PING entropia.com (207.104.25.155): 56 data bytes
64 bytes from 207.104.25.155: icmp_seq=0 ttl=110 time=591.7 ms
64 bytes from 207.104.25.155: icmp_seq=1 ttl=110 time=602.7 ms
64 bytes from 207.104.25.155: icmp_seq=3 ttl=110 time=541.7 ms
64 bytes from 207.104.25.155: icmp_seq=4 ttl=110 time=533.9 ms

--- entropia.com ping statistics ---
5 packets transmitted, 4 packets received, 20% packet loss
round-trip min/avg/max = 533.9/567.5/602.7 ms
-

Also the same with IP numbers.  It seems that the connection
error may not be caused by network or DNS configuration errors.  v18
connects without any problems on the same machine.

My /etc/nsswitch.conf file:
-
passwd: compat
group:  compat
shadow: compat

hosts:  files dns
networks:   files

protocols:  db files
services:   db files
ethers: db files
rpc:db files

netgroup:   db files
-

'/etc/host.conf' file:
-
order hosts,bind
multi on
-

Any suggestions?

Regards
Attila Megyeri

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Re: Mersenne: Mprime Error 2250

1999-10-11 Thread Brian J. Beesley

On 11 Oct 99, at 13:44, George Woltman wrote:

> The problem on this system is that /etc/host.conf was specifying
> "order hosts" instead of "order hosts,bind".  Making the change now
> allows the older mprime to contact the Primenet server.  

This may be a partial explanation, however with DNS disabled I don't 
see how it used to get a connection to a named server ...

My linux systems (Red Hat 5.1 & 6.0, installed straight from the box 
& without fiddling with the various .conf files in /etc) seem not to 
have any problems with mprime. There _is_ an issue in configuration, 
linuxconf allows you to disable DNS, if you do this I'd expect 
problems!!!

I'd also expect problems if you configure the DNS server address(es) 
incorrectly, or if there is a fault on the network which prevents the 
DNS server(s) from being reached. As a professional network operator, 
could I point out that this is actually one of the commonest causes 
of users reporting "problems with the network", especially if other 
people appear to be working normally.

Actually I found difficulty in contacting the PrimeNet server 
entropia.com yesterday morning (Sun 10th from 0700 GMT), this seems 
to have been a real problem with the server or its network connection 
as everything else was running OK. I just simulated a break in the 
network (by unplugging the LAN cable) & did "mprime -c" to force a 
connection to the server; after a couple of minutes (maybe three) it 
gave up & reported "Error 2250". So maybe the Sunday morning server 
outage is what caused the sudden rash of problems, unfortunately 
coincident with people upgrading to v19 & probably wanting to get 
more work due to the benchmark speed change caused by the upgrade.

Tip for diagnosis of problems: entropia.com's IP address is 
207.104.25.155 (though this isn't fixed, it shouldn't change often). 
If you're getting problems connecting to entropia.com, try pinging 
the numeric IP address; if that works, try pinging by name. If the 
first fails, there is a network fault; if the second fails, there is 
a fault in the DNS configuration or server; if both work, you *may* 
have an application error (though there's still a chance that the 
server isn't running the appropriate protocol for your application).

Windows users might care to try a nice program called CyberKit, which 
is freeware & does ping, traceroute & NS lookup (amongst other 
things). You should be able to find it on TUCOWS and/or NONAGS.
Unix users have these applications bundled with the OS 8-)


Regards
Brian Beesley
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