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It is possible to assign 2 ipaddresses on 1 NIC. Sometimes, people do that to keep old application running with a fixed addressed coded in.. Maybe some software were setup using another address too.. and the admin did not want to reconfigure everyone, so he added the second address to the connection.<br />

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It is possible to assign 2 ipaddresses on 1 NIC. Sometimes, people do that to keep old application running with a fixed addressed coded in.. Maybe some software were setup using another address too.. and the admin did not want to reconfigure everyone, so he added the second address to the connection.


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We're talking about a private ip address right? Not public?
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We're talking about a private ip address right? Not public?

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Yes these are both private IP addresses. The only applications running on this box are Exchange related. It is possible that when they migrated from 5.5 to 2003 they assigned a new ip address to 2003 during the transistion. Would that make sense?<br />

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Yes these are both private IP addresses. The only applications running on this box are Exchange related. It is possible that when they migrated from 5.5 to 2003 they assigned a new ip address to 2003 during the transistion. Would that make sense?


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If that is the case would any special configuration be necessary for routing the public IP address to the correct private IP address? 
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If that is the case would any special configuration be necessary for routing the public IP address to the correct private IP address?

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Within my local subnet I have 2 IP adresses designated on my Local Connection. Is there a good reason for this or is it an opportunity for confusion?
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Within my local subnet I have 2 IP adresses designated on my Local Connection. Is there a good reason for this or is it an opportunity for confusion?

2 IP addresses on my exchange server

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.