Netra Proxy Cache Array User's Manual

Multiple Arrays on the Same Subnet

The Netra Proxy Cache Array software multicasts load and heartbeat information over the control network. It also performs a redundant multicast of the same data over the service interface. This raises the possibility of overlapping addresses if you have more than one array on a given subnet.

If you have more than one array on a subnet, it is recommended you use different multicast addresses and not just different port numbers to distinguish each array. See the description of the multicast address property in "Networks". You can use snoop (1M) to ensure uniqueness of a multicast address within your network.