3Com CoreBuilder 9000, User Manual

Page: 313 / 468

Designing ATM Networks 313
Management Plane Initializes and maintains a Management Information Base (MIB) that
resides in each participating ATM device. The MIB is a management
database that includes status, control, and configuration information and
can be accessed by the User and Control planes and by external network
management systems. The functionality of the Management Plane is
implemented by the ILMI — Integrated Local Management Interface. The
ILMI is described in the following sections.
Designing ATM
Networks
An ATM Network uses the following pieces of equipment as basic
building blocks:
Servers or end stations — These can be equipped with one or more
ATM adapters (for example, a ATMLink S-Bus 155), which allow direct
connection of the endstation to an ATM switch.
An ATM edge device — The edge device serves as an interface
between LANs and an ATM switch. For example, the SuperStack ® II
Switch 2700 unit for Ethernet and Switch 2000 for Token Ring.
An ATM switch
— The ATM switch such as the CoreBuilder 9000
ATM Enterprise Switch provides the central switching service between
end users.
Router with ATM downlink — The internal ATM Adapter allows
routing between multiple emulated LANs (for example, a
NETBuilder II
® with ATM or a CoreBuilder 2500 with one or two ATM
interfaces).