Broadcast_Addr - Bay Networks 6300 Supplement Manual

Chapter 2 Configuration Parameters Book C

broadcast_addr

This Annex parameter defines the IP address for RA 6300 broadcasts. It
is recommended that you set a subnet broadcast address, if possible. In
this case, you set the subnet portion of the broadcast address to match the
RA 6300 subnet address, as determined by the RA 6300 subnet mask,
and you set the host portion of the broadcast address to all one-bits. For
example, if the RA 6300 subnet address is 132.254.9.0, and the RA 6300
subnet mask is 255.255.255.252, you should set the broadcast address to
132.254.9.3. To calculate this, subtract the subnet mask from
255.255.255.255. Thus, in the previous example, you subtract
255.255.255.252 from 255.255.255.255 to arrive at 0.0.0.3.
If your network is not subnetted, you can specify a network broadcast
address. In this case, you set the network portion of the broadcast address
to match the RA 6300 network address, as determined by the intrinsic
mask for the network class. And you set the host portion of the broadcast
address to all 1-bits.
Finally, you can set a limited broadcast address of 255.255.255.255 that
reaches all nodes on the subnet. However, if you have more than one
subnet on the same physical cable, the RA 6300 will broadcast to all nodes
on all of the subnets. This can be troublesome if some of the subnets or
nodes do not recognize the broadcast.
The default for broadcast _addr is 0.0.0.0, which RA 6300 RIP routing
does not support (because most hosts do not recognize it).
Remote Annex 6300 Supplement to the Remote Annex Administrator's Guide for UNIX
C-44