Re: Using multiple network cards and IP addresses in one machine

Hi Kurt;

Thanks for the reply :-)

What I've got is a web server behind ISA 2004 and that server has two NICs
and multiple sites on it. That's the reason for different IP addresses in
the same subnet - each is for a different site.

Your description of the problems caused by this is exactly what I'm seeing
:-) In a case like this how would you do it - put the other NIC on a
different subnet?

Thanks;
Marvin


"Kurt" <lorentzenkurt@xxxxxxxxxxxxxxxxxx> wrote in message
news:12fpme5op0l3lbd@xxxxxxxxxxxxxxxxxxxxx
The big question is Why do you have multiple IP addreses in the same
subnet?
This is a definite no-no in the Windows world. Your computer will claim
that
multiple addresses belong to the same computer, hence the duplicate name
error. And your routing table will be a mess with local addresses heading
out multiple virtual interfaces. TCP connections will have trouble because
the DNS name will resolve to one IP address, but your computer will be
attempting the connection on another. One IP address per computer per
subnet. If you need more bandwidth look into teaming NICs.

...kurt



"Marvin Miller" <someone@xxxxxxxxxxxxx> wrote in message
news:uAWTcMH0GHA.1536@xxxxxxxxxxxxxxxxxxxxxxx
Hi Folks;

I having an issue with one of my servers and I think I'm doing something
incorrectly.
The server has 2 NICs, one with a single IP address and the second with
multiple IP addresses - all in the same subnet. Client for Microsoft
Networks in installed on both NICs as well as File & Printer Sharing.

Both NICs have the same deafult gateway defined and the error I'm seeing
is
that browsing from that machine is slow and the event log has errors
like
this;

Event ID 4319:
A duplicate name has been detected on the TCP network. The IP address of
the
machine that sent the message is in the data. Use nbtstat -n in a
command
window to see which name is in the Conflict state.
Event ID: 8022
The browser was unable to retrieve a list of domains from the browser
master
\\MAIL on the network
\Device\NetBT_Tcpip_{0DC04389-2D90-45FA-A3A2-29CE1F05524D}. The data is
the
error code.

The rest of my network is working well and I suspect all the issues on
this
machine are caused by my using both NICs. Does anything obviously wrong
come
to mind?

Thanks!
Marvin






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