Private Network

Add this planning information to the Cluster and Node Names Worksheet.

You do not need to configure a private network for a single-node cluster.

Sun Cluster software uses the private network for internal communication between nodes. A Sun Cluster configuration requires at least two connections to the cluster interconnect on the private network. You specify the private network address and netmask when you install Sun Cluster software on the first node of the cluster. You can either accept the default private network address (172.16.0.0) and netmask (255.255.0.0) or type different choices if the default network address is already in use elsewhere in the enterprise.

After you have successfully installed the node as a cluster member, you cannot change the private network address and netmask.

If you specify a private network address other than the default, the address must meet the following requirements:

• Use zeroes for the last two octets of the address.

• Follow the guidelines in RFC 1597 for network address assignments.

  You can contact the InterNIC to obtain copies of RFCs. See “Planning Your TCP/IP Network” in System Administration Guide, Volume 3 (Solaris 8) or “Planning Your TCP/IP Network (Task)” in System Administration Guide: IP Services (Solaris 9) for instructions.

If you specify a netmask other than the default, the netmask must minimally mask all bits that are given in the private network address.