I am looking to see if anyone has had this problem or ideas of what I might
try.  We have been running a Windows 2000 cluster connected to a powervault
for two years as a single instance with no problems.

I am in the process of setting of a Windows 2003 Active-Passive two node
cluster connected to a SAN.  I have fourinstances/virtual servers installed
and I can access the "default instance" from any machine with enterprise
manager within our network.  This behavior is as expected.

I can only access the named instances from machines within the cluster's
subnet, which is not expected.  I have all the instances using port 1433; not
sure if that makes a difference.

Need some help pointing our network team in the right direction.  They have
had me turn off the second node, and disable NIC teaming to get down to a
single server, single NIC environment, and I still don't have success.

Any ideas on whether this is a SQL setup problem or a network/firewall
configuration issue?

Respectfully,

Brett