Compaq ProLiant Clusters HA/F100 Administrator's Manual page 105

Setting Up the Compaq ProLiant Clusters HA/F100 and HA/F200 3-25
4. Ensure the network client can access the IP address. Regardless of
whether you are using WINS or DHCP, you can execute the DOS
command ping to check the connection.
Execute a Ping command from the network client , using the cluster IP
address as the argument.
The client has successfully accessed the cluster resource if you get a
response similar to:
Reply from <IP Address>: bytes=xx time=xxxms TTL=xx
The client has not successfully accessed the cluster resource if you get a
response of:
Reply from <IP Address>: Destination host unreachable
5. Use Microsoft Cluster Administrator to perform a manual failover of the
cluster group that contains the IP address.
6. Execute the ping command again after the manual failover completes.
As soon as the other node brings the cluster group online, a response similar to
the one noted in Step 4 should be returned. If the client successfully accessed
the failed-over IP address, your cluster is working. If the client was
unsuccessful, either the cluster group was not configured correctly, the failover
did not occur, or the ping command was performed before the failover activity
completed.
If network client failover is not working correctly, see the installation
troubleshooting tips in Chapter 6.
To verify a more extreme case, instead of failing over the IP address, power
off the primary cluster node and verify that the resource fails over to the other
node.