
418 Networking Explained, Second Edition
exchange data among 128 individual or group addresses. More than one SMDS node can
be assigned the same group address in addition to an individual address. There are restric-
tions, though. For example, an individual address cannot belong to more than 32 groups,
and a group address cannot represent more than 128 individual addresses.
Group addressing also can be used as a filtering mechanism. For example, assume five
LANs (A, B, C, D, and E) within a local county are interconnected via SMDS. Further
assume that all five LANs are running IP; A, B, and C are also running IPX; and D and E
are also running AppleT ...