Routing
Software Specifications
5-4
Centillion 1200N ATM Switch User Manual
NTP 297-8103-903
Routing
The signaling for establishing SVC connections is transferred by referring to the
routing table maintained by each switch in the network.
There are two types of routing table: static routing table and dynamic routing table.
the ATM Switch provides the ILMI (Integrated Local Management Interface) and
PNNI (Private Network-Network Interface) functions for preparing and revising
the dynamic routing tables. Static routing tables can also be revised manually.
ILMI Functions
ILMI is a function for learning the configuration data of neighboring equipment
when an end system is connected to a switch or when a switch is connected to
another switch.
The ILMI function includes a switch-terminal address registration function. This
function is triggered by a trap. The switch adds the inherent address of each
terminal to its network prefix and registers the result as the ATM address of each
terminal.
A switch prepares dynamic routing tables by this address registration function.
Figure 5-3
illustrates the procedure of ILMI address registration.
Figure 5-3: ILMI Address Registration