The only time I can think of that two machines might (legally) share the same IP address in the same network is in the event that they are doing load balancing and/or failover (such as VRRP monitored circuits). This situation generally implies that the end stations share an ARP address as well. 99.999% of the time if two end stations have the same IP address on the same network, there is a problem.
Your dad might have said that a single machine can have 2 (or more) IP addresses, which is perfectly legal.
He also might have said that 2 machines can have the same IP address on different (usually unconnected) networks, which can be legal under some circumstances (e.g. two networks using RFC1918 addressing). This introduces a number of potential problems.
You weren't specific if the 200 other computers were classified or not, but if the 2 unclassified boxes are connected to the Internet and to a classified network, then your dads ISSO (or equivalent) should be more than a tad upset.
- Ken
@
Sent by: [EMAIL PROTECTED]
12/14/99 05:14 PM
Please respond to "Jimi Aleshin"
To: "firewall-lista" <[EMAIL PROTECTED]>
cc:
bcc:
Subject: 2 IP addresses in one corporate/local network?
My dad works at the Department of Defense for the U.S government and was
telling me that he has like 200 computers in the area of where they work and
(of course) a server. He was telling me (I might have heard him wrong) that
2 machines are able to have the same IP address on their own local network.
I don't know if this is true or not? By the way, those computers are not
connected to the internet, except two unclassified ones are. What do you all
think?
--
/Jimi Aleshin
Mail: [EMAIL PROTECTED]
ICQ: 26180172
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