[RESOLVED] Networking Losing Connection

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wtjohnson

New Member
#1
We're running a small networking of five pcs at our library. Some of those PCs seem to be losing connection to the network sporadically. I've tried uninstalling and reinstalling the driver for our Ethernet (VIA Rhine II, Realtek RTL8139) which fixes the problem temporarily. Only around two of a total of five pcs has held on to the connection since fixing it. The others will be okay for a few days then lose it again.

I'm using Windows XP, SP 2 with a Linksys Wireless G Router and we're behind a Sonicwall. The Windows Firewall is disabled. In addition to the uninstalling, I've also tried updating the drivers which didn't work. I had one cut out today with the 2007 driver on it.

Could this be a bad hub? Any certain way to tell? Some of the time it's fine which makes it difficult to troubleshoot.
 
jimbo1763

jimbo1763

Moderator
#2
Welcome to the forum.

Sometimes the NIC's will lose their connection if they go to sleep, or if the computer does. Is that possible with yours? Check the power settings on the NIC's to make sure they are not set to power down.

I am not familiar with Sonicwall-but is it possible to set the other machines as "trusted" sites?
 
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wtjohnson

New Member
#3
i'm pretty sure all these are embeded ethernet adaptors. can they be set to sleep as well? how would i check this setting?
 
jimbo1763

jimbo1763

Moderator
#4
Go to Device Manager and right click the device-go to Properties. There should be a setting for power management.
 
Midknyte

Midknyte

Caffeine Fiend
#5
did you update the router firmware? could you provide specific model numbers?

is the sonicwall a router as well as a firewall?
 
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wtjohnson

New Member
#6
ah, found the power setting. it was set to sleep.

today the printer stopped working on one when the net connection got lost. i didn't have any doubt that it was network issue though ... the internet worked on others.

i'll get the model number. and we use sonicwall specifically for the firewall, not routing.
 
jimbo1763

jimbo1763

Moderator
#7
Is the printer connected to the router? If it is, that might point more to the router. Do take a look at the firmware, as per Midknyte's suggestion.
 
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wtjohnson

New Member
#9
When I un-checked the box the connection wasn't automatically re-established. I went into the device manager and uninstalled/reinstalled again. After that, I un-checked the box again ... it was selecting it by default. The connection is now active.

Should the connection have awoken immediately following un-checking the box?
 
jimbo1763

jimbo1763

Moderator
#10
Probably not. If you had lost the connection you may have needed to restart to re-establish your IP addresses.
 
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wtjohnson

New Member
#11
wow, you guys are fast.

i believe i restarted the pc but it still didn't have connection. but after the reinstall it worked fine. if this doesn't work then perhaps it is the hub.

i've never really messed with router firmware before. could you all give me tips on how to update it or check it?

i have a linksys WRT54GS with speed boost. my version number is 6. should i upgrade? i see firmware for july of 07 which i know we didn't get.
 
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wtjohnson

New Member
#12
another thing i noticed. all the ones that have lost connection either have a Realtek 8139 or VIA RHINE II adapter. The one computer on the public network that has yet to lose its connection has another card brand.

Could it perhaps be a flaw with those type of cards? Or a setting. The one that held it's connection had the power saving connection enabled.
 
whutsupdoc

whutsupdoc

Master of my Domain
#13
sounds like a router issue... update the router firmware as mentioned above ... there should be step by step instructions from linksys when u download the firmware

also... what kinda modem is being used (cable/dsl/fios)??? probably not the issue if half the computers are working...but it's still possible.
 
Leoslocks

Leoslocks

_ _ _ _ _ _ _ _
#14
The Linksys router firmware upgrade is as simple as logging in to the router and starting the Update Firmware tool. Point it to the downloaded firmware file and wait till it is finished.
 
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wtjohnson

New Member
#15
hey guys,

haven't gotten to try these tips yet. i've been battling a stomach bug the past couple days. today, i'm at our other location. will let you know if it works.
 
Tuttle

Tuttle

Resident Cynic
#16
wtjohnson said:
another thing i noticed. all the ones that have lost connection either have a Realtek 8139 or VIA RHINE II adapter. The one computer on the public network that has yet to lose its connection has another card brand.

Could it perhaps be a flaw with those type of cards? Or a setting.
Or possibly drivers -- see if there are newer drivers available for that network adapter (if it's embedded, go check the motherboard manufacturer's site).
 
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wtjohnson

New Member
#17
I actually tried newer drivers on some of them and it didn't work.

I updated the firmware yesterday and it hasn't crashed since. I think, however, that the switch is to blame. This was suggested by the man we buy our equipment from after he paid us a visit. It's a 10 year old switch, so it's about time to replace anyways.
 
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wtjohnson

New Member
#18
replaced the switch which I though helped. today, after a massive storm, a select number of the computers were down. grrr. next up, sonic wall replacement.

i also tried doing the firmware upgrade to the router which did no good.
 
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wtjohnson

New Member
#19
Well, despite replacing the switch (the switch was 10 yrs old, and only 10mps) with a sweet new 10/100/1000, and also replacing the sonicwall ... the problem still persists. We put in the Sonicwall on Friday and today two machines lost connection.

I also upgraded the router firmware in the midst of all this. Could we just have multiple nics going bad?
 
Tuttle

Tuttle

Resident Cynic
#20
It's possible; I've had a whole batch of machines start dying together at work once (that turned out to be the NICs frying the motherboards fairly quickly if the wake-on-LAN cable was connected). You mentioned a couple of posts ago a storm. What's the power quality like at this place?
 

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