Networking, one minute its there, next its gone
sqr
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Sqr
Overseer: alt.os.windows-xp
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http://sqr.servebeer.com
ftp://sqr.myftp.biz
"Technician" <trav...@clothes.megalink.net> wrote in message
news:MPG.18ef9c11...@news.megalink.net...
> Ok, my experience of networking is, well, quite a bit. In all that
> experience, i have never seen a computer so unstable as far as
> networking goes than this one. as far as i can tell, it is the only
> computer on the network with this problem. and it is this computer
> because it loses connections with all the other ones.
>
> Possible initiating triggers:
> shutdown/restart
> logoff, logon under different account
>
> Symptoms:
> first notice that none of the mapped network drives re-connect.
> Double clicking on the drive fails to initiate re-connect.
> no shares on network are accessible.
>
> For a bit of background, due to this computer running a mail server for
> several domains, it uses several IP addresses. 192.168.0.15 (primary)
> 192.168.0.16-17, 192.168.0.19-21.
>
> A ping from another source reveals 192.168.0.15 is, well, not there. all
> other addresses respond.
>
> BTW, this ethernet card is bridged to another one for when i plug
> another computer into the network (hub is full). i have disabled-enabled
> the connections. and have tried restarting, as well as a shutdown. if i
> go into the ip list manager, and re-enter the list. then i have a 10%
> chance that it will reinitialize the network as it should be.
>
> Any thoughts, answers?
>
> I thank you in advance for any help.
>
> ~Travis
> --
> To reply by email, remove clothes.
>
> Linux is like living in a teepee. No Windows, no Gates, Apache in house.
James
Try another network adaptor. Check cabling / connectors. If it's a
100MHz network is there any possibility that this PC has a lower grade cable
in it's connection 'path' than CAT5 (older cables CAT2-4 work fine at 10MHz
but will give strange errors at 100MHz). If you are using a
hub/switch/router move it's connection to another port that is known to be
OK. If it's a large network is there any possibility of fixed IP's with a
rogue duplicate somewhere (a PC being switched on & off).
Kadaitcha Man
> In article <b65kq2$aqi$1...@news1.mountaincable.net>, s...@sqr.sqr says...
>> Go here.... http://www.homenethelp.com/
>
> I will not even honor this "fuck-off newbie" message with a proper
> flame. given the response, you could not possibly comprehend it if i
> did.
>
> "Overseer: alt.os.windows-xp", ha, what a joke.
... wrote the fuckwit who also wrote “I would also like to point out that i
never use the help system as it is an insult to my intelligence.”
--
Finger me: fin...@kadaitcha.ath.cx
Kadaitcha Man
> I suspect the ethernet drivers for XP are reloaded every time a user
> logs in. I have noticed the secondary mail service running on this
> machine drops connections when a user is either logging out, or
> logging in.
>
> ~Twavis
If you bothered to read the help text that you so avoid like the plague,
you'd discover an article about disappearing IPs. It advises to [CENSORED]
the [CENSORED] [CENSORED] to fix it.
HTH&GL
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Finger me: fin...@kadaitcha.ath.cx
James
The normal 100baseT Cat5 limit is 90m of horizontal UTP plus 10m of drops.
You mention <150m? (10baseT was 150m). Access to a cable tester would be
useful. At the limits of the spec near end crosstalk and attenuation
limits become important and as well as cable the connectors and connector
blocks must be Cat5 rated. Can you relocate the equipment beside the
hub/router for testing purposes to eliminate cabling issues?
How complex is your network? If you have multiple routers/hubs/switches &
repeaters there are rules that have to be followed.
Can you assign a different IP for testing purposes? I generally find it's
best to assign all fixed IP's or use DHCP, not mix them.
If you disable the bridging in this machine, does it make a difference?
Ditto for the mail server.
"Technician" <trav...@clothes.megalink.net> wrote in message
news:MPG.18f185e6d...@news.megalink.net...
> In article <lFDha.5887$pK2....@news.indigo.ie>, jame...@eircom.net
> says...
> > Thoughts only:
> > Try another network adaptor. Check cabling / connectors. If it's a
> > 100MHz network is there any possibility that this PC has a lower grade
cable
> > in it's connection 'path' than CAT5 (older cables CAT2-4 work fine at
10MHz
> > but will give strange errors at 100MHz).
>
> CAT5 all the way.
>
> > If you are using a
> > hub/switch/router move it's connection to another port that is known to
be
> > OK.
>
> swapped it with the intranet server port (was off-line for an update
> anyway), same problem.
>
> > If it's a large network is there any possibility of fixed IP's with a
> > rogue duplicate somewhere (a PC being switched on & off).
> >
>
> the ip that seems to "disappear", 192.168.0.15, is only assigned to this
> machine. it is also mapped in the DNS records for the DHCP server to
> parse through. (though DHCP is only .100 - .200). the only other machine
> that uses multiple ip addresses is assigned .2 - .10, (this is .15 -
> .21, excluding .18 <- ip locked router, just easier to let it have it).
>
> I have re-terminated the cables to the hub, and verified their distance
> was not grater than the transmission line max for CAT5 ethernet @
> 100Base-T (L<150m).
>
> I have not tried another card as there is already a second ethernet card
> installed that has the same problem at the same time.
>
> I suspect the ethernet drivers for XP are reloaded every time a user
> logs in. I have noticed the secondary mail service running on this
> machine drops connections when a user is either logging out, or logging
> in.
>
Kadaitcha Man
> How complex is your network?
Tough question posed to a guy who wrote, and I quote: