17
Addressing the Unit
A unique address must be assigned to each control and tributary DSU in your network.
You can assign an address within the range of 1 through 255.
NOTES:
— Do not assign the number 192 as a network address. This number is reserved
as a broadcast address.
— The numbers 191 and 255 cannot be assigned to a DSU that has a DBM.
However, addresses can be assigned in any order; they do not have to be
sequential. It is recommended that only
odd-numbered addresses be assigned
to DSUs so that even-numbered addresses
are reserved for DBMs
.
— If your network does not currently include DBMs, you retain the flexibility to
add them later without having to reconfigure your entire network.
If a DBM is installed, it requires a separate address which is automatically assigned by
the DSU. The address assigned a DBM is the DSU’s address, plus 1 (for example, if the
DSU’s address is 1, the assigned DBM address will be 2).
Tributary DSU addresses are user-definable, but take care that their addresses are
unique on a multipoint circuit. If two tributaries are assigned the same address, you will
not be able to communicate with either one.
