ATM Switch/Control Module
The ATM Switch/Contol Module (6416SW) module used in the ONcore hub consists of
two cards packaged into a double-slot module:
A base card (ATM Switch fabric) that switches cells from one ATM port to another
ATM port or to another output link on the same module.
ATM cell switching is carried out by means of the Switch integrated circuit, a
technology used by the ONcore switch. This single chip is a non-blocking 16-by-16
times 256 Mbps 8-bit parallel switch.
The Control Point card houses a processor where the Control program resides.
The 3Com ONcore ATM subsystem (as all ATM switching devices) requires a control
program to perform the functions associated with the establishment and management of
ATM circuits. These functions are integrated into the switching element of each
6416SW module. This allows the ONcore ATM subsystem to use a distributed control
system with the following advantages:
Each ATM module benefits from the fault-tolerant design of the 3Com ONcore
chassis.
Continued ATM network operation is ensured in case of a failure at a single point in
the network.
1-6 ONcore ATM Switch/Control Module: Installation and User's Guide
