2 Default Gateway's

[kryptor]

Ok folks, I have 2 default gateways on my network, one of these is for the static IP address for the internet, and then other is for the LAN.

If i leave both default gateways active I can access the net for about 2 days then it gives up, if i turn off the gateway on the LAN then I cant see my server and control it using MMC from the client pc in ?

Anyone with any suggestions I would be most appreciative for some help.

Dave

 

[Jump1ng]

But you would only require a Gateway when you want to leave your lan environment and go to the outside world.

So not sure why you would require to have a gateway for your lan.

How does your workstation get their ip number? Unless its DHCP assigned or well even if it is, check that your DNS & WINS setting are correct. Without this working you might stuggle to find your equipment on the LAN.



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Make the best use of what is in your power, and take the rest as it happens.

 

[kryptor]

The internet address are all statics and the gateway/dns is pointed at the router supplied by ISP.

The lan will operate OCCASSIONALLY without having the GATEWAY and DNS in there but on most occassions I cannot connect to the AD of the server, I have found that the only way this will allow me to work is when having a GATEWAY in both NIC's.

The DNS is functioning correctly as all internal clients have no problems with connecting to the AD, or the internet etc. It only seems to be computers that are assigned static IPs for LAN and INET.

All IPs are statics and assigned by myself, there are no DHCP devices in the network.

I'm still at the end of my tether wiith this little problem, so im now buggered.

 

[Jump1ng]

The lan will operate OCCASSIONALLY without having the GATEWAY and DNS in there but on most occassions I cannot connect to the AD of the server, I have found that the only way this will allow me to work is when having a GATEWAY in both NIC's.

You ALWAYS need to have DNS configured or your windows2k/XP machines will not work in a network environment. You can specify more than 2 DNS entries if you need to use extra DNS for outside your LAN access.

But now you said something about BOTH nics? These machines got dual nics and you use one for internal and one for external?


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Make the best use of what is in your power, and take the rest as it happens.

 

[kryptor]

Yes thats correct the machines have DUAL NIC's.
I use one card for Internal and one for External.
The DNS addresses are always assigned.

 

[patrichek]

You don't need 2 NICs if i understand your setup correctly. Why don't you make the external ip from your ISP the gateway for your router, then make your router ip the gateway for your internal clients.

 

[kryptor]

I have no control over the router it has been pre-programmed by the ISP (BT) and cannot be changed to suit our needs.

 

[patrichek]

i'm in the same situation. I just call my ISP and have them make the changes for me.

 

[mwiner]

I agree with patrichek. I can't believe that your ISP would honestly expect you to have dual nics in EVERY computer on your LAN. If you are small that is easy to manage and maintain. But could you imagine something even slightly bigger then small. It would be a nightmare. To have to run two seperate LANS and have to statically control every IP for every computer TIMES 2!!

 

[Jump1ng]

The times I have had to configure a site for a BT router (which anoyingly) are configured by BT they have made the external ip the ip of the router so you just use that as the gateway.

BT should be able to change that for you no problems. Or you could buy another router and program it yourself.

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Make the best use of what is in your power, and take the rest as it happens.

 

[kryptor]

mwiner, the only computers in the network that have dual nics are those which are assigned STATIC INTERNET IP.

May give BT a ring in the morning when they are wide awake and see what they say.

 

[bcastner]

Add a router.
Make its WAN IP your existing static IP.

Let it DHCP the LAN side for you. Your only Gateway will be the router LAN IP.

 

[Jump1ng]

Bcastner he does have a router but living in the wonderfull land of GB our telecom provider BT likes to pre program their routers....not always the way you want it without TRYING to get them to change it.

If you know your network settings it might be easier getting a new router and congfigure it yourselves.

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Make the best use of what is in your power, and take the rest as it happens.

 

[bcastner]

I was suggesting he add a router. All he needs the BT router to do is to be the front end for the BT network. Since he has at least one static IP for the WAN side, set the new additional router to use a static IP for its WAN port, and NAT the internal LAN.

Even if he has servers requiring static IPs, he can just connect them to the original BT router. But the rest of the LAN will go along merrily on the new router.

 

[Jump1ng]

Hmm never thought about using two routers....

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Make the best use of what is in your power, and take the rest as it happens.