WAN Network card stops working for no reason

[drjman]

I am running an application server with two network cards. One with an internal IP and another with a Internet IP. For some reason the internet IP card will stop working for no reason. I have looked in Event Viewer each time and there are no errors. It is a brand new motherboard and this has happened with previous setups as well, so i know that the card is ok.

Everytime this happens I disable and enable the card and everything is back to normal.

Currently it is behind a router. I have tried both with and without a router and it does the same thing. It has all the correct drivers and again i can't find any errors.

OS: Server 2003 R2
Mobo: EVGA 680i

This is very frustrating and affecting my job. I need to have this app server as reliable as possible. Thanks for the help in advance.

 

[spidey07]

Post exactly how the network cards addressing and default gateway is setup along with a "route print". Windows servers get very tricky with more than one IP address. My first guess is you have two default gateways with is a no-no.

 

[drjman]

Sorry, i don't know how to do a route print.

When you say two different Gateways...you mean one on each. Yes my internal has a different gateway from my internet. Should they both have the same internal gateway?

 

[drjman]

Internet card:

192.168.1.2
255.255.255.0
192.168.1.1gateway

192.168.1.1

Or

74.8..X.X
255.255.255.240
74.8.X.X gateway
64.80.125.123
64.80.125.114

Internal

10.1.1.31
255.0.0.0
10.1.1.1gateway

10.1.1.1

I am currently running through a router for the internet connection. But it has happened with both setups.

 

[spidey07]

I don't need to know the external and you may want to remove it or just use X.X for the last two digits.

"route print" is a command that you run from a command prompt. But off the bat you can't have two default gateways on two different cards.

 

[imported_snikt]

Originally posted by: drjman
Internet card:

192.168.1.2
255.255.255.0
192.168.1.1gateway

192.168.1.1

Or

74.8..X.X
255.255.255.240
74.8.X.X gateway
64.80.125.123
64.80.125.114

Are these being assigned through DHCP? When you say "stop working" does the NIC lose the IP?

 

[drjman]

It doesn't loose the ip. It shows "connected" but no outside access. These are all static.

 

[drjman]

I fixed the Gateway issue. Dumb mistake on my part. This only happens every few days so there are no immediate solutions.

 

[spidey07]

Originally posted by: drjman
I fixed the Gateway issue. Dumb mistake on my part. This only happens every few days so there are no immediate solutions.

Well if you only have one default gateway, and only one default route (0.0.0.0) listed in "route print" then your problem is solved.

The erratic behavior that you describe is common when a machine has more than one gateway - how is it supposed to know which one to use?

 

[drjman]

Thanks for the help all!