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configure two static ip's in a machine

By trackme ·
hi,
I have mail server running in win 2k.I have 2 static IP's provedide by the same ISP such that one Ip is given from one place having the same default gateway and the other IP from another place haing the same gateway as the previous one using DSL technology .My question is that i have to configure the mail server using the two differnt static IP such that even there is any failure in one of the lines , my mail server still runs with the other static IP running in the machine so that mail server is accesbile to the outside world always.
How to design this setup.if not what is the other possible way.

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configure two static ip's in a machine

by m.rijkers In reply to configure two static ip's ...

As far as I know there is no way to bind 2 IP addresses to 1 card. So you will need 2 network adapters. Since you cannot use 2 network adapters in the same server on 1 network, you will also need 2 subnets. Each of these subnets should have a connection (gateway) to the ISP. With this setup you can also configure your routes to use the most efficient gateway as default. You can use your mailserver as a router to avoid further investments

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configure two static ip's in a machine

by trackme In reply to configure two static ip's ...

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configure two static ip's in a machine

by trackme In reply to configure two static ip's ...

in my mail server i have 2 NIC cards ,so i configure each NIC card with one of Static IP provided by the ISP.Each of the DSL Line is connected to one of the cards .Both the cards have the Same Default gateway.So i want a setup suchthat even if one DSL line goes down ,my mail server sholud be accessibele to the users via the other DSL line with a staic IP configured in the other NIC card in the same machine

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configure two static ip's in a machine

by rgrowcock In reply to configure two static ip's ...

This may or may not answer your question or solve your problem.

I had a similar situation, wanting to use 2 static IP addresses and NIC in a W2K server. Found out that having a default gateway on both is not possible, they conflict with each other. So using just W2K, I'm not sure that you can do this, you would need a 3rd party proxy software.

I looked into and tried Winroute Pro, http://www.kerio.com (remove and spaces added), and this allows you to map different IP addresses as well as including its own smtp and POP3 servers.

I believe this is what you need to do so that you have the "fail-over" setup. Essentially, what you would do is setup both NIC with the static IPs and point them to the local smtp or pop3, which ever you want to use. There is also a setting that allows load-balancing between the NICs. This way you could set one NIC to use the locally configured mail server, and the other to use your provider's server.

WinRoute Pro offers a 30-day trial that you can play with if you want. I haven't gone this route do to the cost of it. It's not really that expensive unless you have a lot of users that you need to connect to. CDW.com has given me the best price if you are interested.

Hope this helps!

Roger

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configure two static ip's in a machine

by trackme In reply to configure two static ip's ...

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configure two static ip's in a machine

by rawright In reply to configure two static ip's ...

If you have two physical lines from your provider, connect both to a switch or router and connect both NICs in your mail server to the same box. Another approach using one NIC requires a similar situation - both DSL lines connected to the switch, along with the one NIC from the mail server. To make the NIC respond to both addresses:

In Control Panel, open the Network and Dial-up Conns applet. Select the NIC, then open Properties. On the General tab, select TCP/IP and click Properties. Click Advanced. On the IP settings tab, click Add. Enter your other IP address and subnet mask, then click Add/OK. This NIC will now answer to both IP addresses.

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configure two static ip's in a machine

by Shanghai Sam In reply to configure two static ip's ...

i have tried this and it has not worked out with a single NIC.I want my Mailserver to be up always , i have pointed my IP for the mail server. so i want the setup such that if this ip fails ,mu mail server shuld look for the second IP and it shuld work.

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configure two static ip's in a machine

by brian In reply to configure two static ip's ...

I know that with Windows 2000 Pro you can bind multiple IPs to one NIC by using the advanced button in your NIC TCP/IP properties. You might want to try and see if this also works with Windows 2000 Server.

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configure two static ip's in a machine

by trackme In reply to configure two static ip's ...

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configure two static ip's in a machine

by catmanth In reply to configure two static ip's ...

Hi
the answer 3 and 4 is ok, but don't forget, your mailserver will be addressed from the outside via SMTP. Therefore you must also update your DNS.
The best way you define a mail.yourdomain.zzz and a 2nd mail server mail1.yourdomain.zzz.
The MX record point out that at first mail should be used and 2nd mail1. Then the mails could delivered to your server when one line is going down.
If you not administre your DNS, ask your DNS provider that he do it for you.
Good Luck

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