Mulitple IP addresses on the same NIC and outbound connection source IP binding

[zrb]

Hi,

I have assigned a static IP (IP0) to the NIC on a Win2K server. I
have also added another IP (IP1) to the same NIC.

I need to be sure that the outbound connections will ALWAYS use the
IP0 address and NEVER use the IP1 address. This is needed to get
through a firewall.

When I do a "route print" I dont see IP1 in the "gateway" or
"interface" columns. My telnet sessions are going thru fine.

Is this something I can take for granted or should discard as
accident that it is working.

Regards

Parthi

 

[Marina Roos]

Why not add another nic in the server? What are you trying to accomplish?

Marina

 

[zrb]

Hi,

1) I need the source IP to be deterministic because it is in a
Firewall access control list.
2) The additional IP I am adding is part of a clustering solution,
which moves that IP address to another machine in case the first
machine fails.

The rest is just for you information.

1) We have already completed the network setup and adding a NIC (I
need to do this for 12 servers) is not an option, atleast immediately,
if you are going to suggest us to use different subnets.
2) We are basically trying to closely match how failover happens in
Windows Clustering (MSCS), specifically for IP resources. The funds
to setup 6 clusters has not been allocated. Our system will be in
production in another 2 weeks. However, we want to be ready with the
architecture when it is done. Also we want to simplify the recovery
process till then.

Regards

Parthi