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Posted

I have a normal 100 Mbit LAN.

Several times per day I can't connect to a other computer or internet.

After a few minutes everything is ok again.

All computer have static IP

All computer are always connected to the same port on the router

What I did try:

plug in and out the network cable

plug in and out the router and ADSL modem

:didn't help anything the problem resolves itself neither faster nor slower.

I changed on the two network cards from Speed: Auto Negotiate to 100 Mb Full Duplex (these are 1000, 100, 10 MBit cards).

I think it reduced the problems but I am not sure.

When I have this problem and I disable the network connection and than enable it again, everything works perfect again. The network cards have a lot of options to set. Maybe it can be fixed there?

Someone know?

Posted

I've had similar issues in the past, turned out to be a faulty port on the router.

Worth trying a different port just to eliminate a variable :)

"I don't want to know why you can't. I want to know how you can!"

Posted

windows ?

as it seems to be intermittent - not so easy

does the problem happen on all the computers at the same time ?

what is the "router" ?

a ping 127.0.0.1 ( loopback check ) when the problem occurs could tell you if it is your computer or the network.

netstat - a will tell you all the connections open on your network card stack

ctrl+alt+del and you can look at the network performance tab and , performance , and processes - is the cpu saturated ?

Posted
which card do you use?

one is onboard and Driver tells Realtek RTL8168c(P)/8111C(P) PCI-E Gigabit Ethernet NIC

the other: Realtek RTL 8169/8110 Family Gigabit Ethernet Nic.

On the first one that disconnect/connect works on the other computer I didn't try yet.

Posted
windows ?

as it seems to be intermittent - not so easy

does the problem happen on all the computers at the same time ?

what is the "router" ?

a ping 127.0.0.1 ( loopback check ) when the problem occurs could tell you if it is your computer or the network.

netstat - a will tell you all the connections open on your network card stack

ctrl+alt+del and you can look at the network performance tab and , performance , and processes - is the cpu saturated ?

no not all computer at the same time. Just 1 or maybe 2.

Will try when the problem is there again.

What I know now:

WinXP

ping 127.0.0.1 not tried yet but no ping to the outside world possible

cpu not saturated

no activity at all on the network

Posted
windows ?

as it seems to be intermittent - not so easy

does the problem happen on all the computers at the same time ?

what is the "router" ?

a ping 127.0.0.1 ( loopback check ) when the problem occurs could tell you if it is your computer or the network.

netstat - a will tell you all the connections open on your network card stack

ctrl+alt+del and you can look at the network performance tab and , performance , and processes - is the cpu saturated ?

no not all computer at the same time. Just 1 or maybe 2.

Will try when the problem is there again.

What I know now:

WinXP

ping 127.0.0.1 not tried yet but no ping to the outside world possible

cpu not saturated

no activity at all on the network

you may find some assistance here: http://en.kioskea.net/contents/configurati...ics-reseau.php3

Posted
They may take a while to come out of sleep mode or standby

Bubba

no that's not the reason, I constantly work on that pcs and one moment it works, the next moment not anymore. After 5 min it is working again.

Posted
windows ?

as it seems to be intermittent - not so easy

does the problem happen on all the computers at the same time ?

what is the "router" ?

a ping 127.0.0.1 ( loopback check ) when the problem occurs could tell you if it is your computer or the network.

netstat - a will tell you all the connections open on your network card stack

ctrl+alt+del and you can look at the network performance tab and , performance , and processes - is the cpu saturated ?

no not all computer at the same time. Just 1 or maybe 2.

Will try when the problem is there again.

What I know now:

WinXP

ping 127.0.0.1 not tried yet but no ping to the outside world possible

cpu not saturated

no activity at all on the network

you may find some assistance here: http://en.kioskea.net/contents/configurati...ics-reseau.php3

no it doesn't. When it works, than it works perfect and I can ping everywhere, everything 100 %

When it has its 5 min. than nothing at all works, beside I didn't try ping 127.0.0.1 yet (as now when I want to test it works...)

Posted

If the one you are working on apparently works, does it suddenly freeze?

Or you simply cannot access the LAN?

Disable all screen savers

Change IP addresses

Turn off offending machine, see if problem migrates.

Change your primary machine to see if it persists.

Realteks have been real problematic over the years.

Lose the router.

Redo drivers, change offending card, if its one machine only, rebuild it, might be dirt, PSU, O/S

Bored now

Bubba

Posted
windows ?

as it seems to be intermittent - not so easy

does the problem happen on all the computers at the same time ?

what is the "router" ?

a ping 127.0.0.1 ( loopback check ) when the problem occurs could tell you if it is your computer or the network.

netstat - a will tell you all the connections open on your network card stack

ctrl+alt+del and you can look at the network performance tab and , performance , and processes - is the cpu saturated ?

no not all computer at the same time. Just 1 or maybe 2.

Will try when the problem is there again.

What I know now:

WinXP

ping 127.0.0.1 not tried yet but no ping to the outside world possible

cpu not saturated

no activity at all on the network

you may find some assistance here: http://en.kioskea.net/contents/configurati...ics-reseau.php3

no it doesn't. When it works, than it works perfect and I can ping everywhere, everything 100 %

When it has its 5 min. than nothing at all works, beside I didn't try ping 127.0.0.1 yet (as now when I want to test it works...)

maybe this link can assist you if not disregard it http://technet.microsoft.com/en-us/library/bb456996.aspx

Posted

Probably not an issue but you might check the following. Right click on the network device and select properties. Then next to the box that shows the network card, select Configure then Power Management. There is an option to allow the computer to turn off the device to save power. Might try disabling that and see if it improves.

Posted

when the problem occurs - can you try to ping the router - if you can ping the 127.0.0.1 and then ping the router LAN switch and the other comps it should mean your network card is not the issue.

what sort of programs are you running when it does lock up - any torrenting ? the router itself may have its CPU/ram overloaded with connections.

though 5 mins is a long time.

Posted
Probably not an issue but you might check the following. Right click on the network device and select properties. Then next to the box that shows the network card, select Configure then Power Management. There is an option to allow the computer to turn off the device to save power. Might try disabling that and see if it improves.

did so...now waiting if problems come again or not.....waiting waiting.....

Posted
when the problem occurs - can you try to ping the router - if you can ping the 127.0.0.1 and then ping the router LAN switch and the other comps it should mean your network card is not the issue.

what sort of programs are you running when it does lock up - any torrenting ? the router itself may have its CPU/ram overloaded with connections.

though 5 mins is a long time.

tried in my 5 min.

Ping 127.0.0.1: OK

ping anything else on the network: nope....nothing

Nothing special running, sometimes just nothing and I try to open a network folder, or I read the newspaper online and can't open the next page.

No torrenting.

If I do torrenting, I can see on the diagram of utorrent everything dropping to 0 and after a while starting again.

Posted
Check router firmware/updates/addresses

Change or dump router - something is going into sleep mode.

BR>Jack

I doubt it is the router.

Actually set up is:

6 computer go in the network router

1 ADSL router goes in the network router

Almost at the same time we got 2 new network cards and the ADSL router

I think it has something to do with the network card options:

I have here:

802.1Q/1pVLan Tagging: disable

Auto Disable PCIe (Power Saving) Disable

Auto Disable PHY (Power Saving) Disable

Checksum Offload: Rx & Tx Enabled

Flow Control: Enable

Jumbo Frame: Disable

Large Send Offload: Enable

Network Address: Not Present

Shutdown Wake-On-Lan: Enable

Speed & Duplex: 100 Mps Full Duplex

Wake-On-Lan Capabilities: Pattern Mach & Magic Packet

WOL $ Shutdown Link Speed" 100 Mps First

I don't know any of these options and never changed anything

any ideas???

Posted
I doubt it is the router.

Actually set up is:

6 computer go in the network router

1 ADSL router goes in the network router

you have an ADSL router and a 8 port switch ? is that correct ?

when the computer stops responding on the network and you cannot ping anything - can any of the other computers ping the LAN side of the ADSL router or any of the other computers ?

sorry if I seem pedantic here and am ignoring your ideas about the settings on the new NICs , but just trying to work out how you are set up.

and only 2 computers with new NICs have this problem ?

Posted
I doubt it is the router.

Actually set up is:

6 computer go in the network router

1 ADSL router goes in the network router

you have an ADSL router and a 8 port switch ? is that correct ?

when the computer stops responding on the network and you cannot ping anything - can any of the other computers ping the LAN side of the ADSL router or any of the other computers ?

sorry if I seem pedantic here and am ignoring your ideas about the settings on the new NICs , but just trying to work out how you are set up.

and only 2 computers with new NICs have this problem ?

yes 8 port switch + adsl router

Whenever I get the problem again I'll jump to the other computers and ping around.....

Unfortunately always when I need a problem I haven't one....

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