Chapter
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5-3
forwarded from the SCBF. The SNMP PROXY module is responsible for
unified management of multiple pieces of equipment.
2. L2 switching protocol subsystem
The L2 switching protocol subsystem consists of the modules STP, IGMP
SNOOPING, and TRUNKING. STP implements Spanning Tree Protocol (STP)
functions; the IGMP SNOOPING protocol enables users to start the IGMP
snooping functions; TRUNKING implements link aggregation.
3. L3/4
protocol
subsystem
The L3/4 protocol subsystem includes TCP/IP protocol modules. This subsystem
implements TCP, UDP, ICMP, IP, ARP, and RARP.
4. Database
subsystem
The database subsystem implements the access control over the system
configuration and management maintenance data. The managed objects include:
Maintenance and management interfaces of MAC entity, VLAN object, and
RMON MIB.
5. Subscriber management subsystem
The subscriber management subsystem is composed of 802.1x module and
RADIUS CLIENT module. It authenticates and authorizes subscribers, and
provides IEEE 802.1x authentication and RADIUS Client functions.
6. System control subsystem
The system control subsystem consists of the system configuration module,
main control module, fault management module, and version management
module. It is responsible for the operation of the whole system.
7. Service control subsystem
The service control subsystem is composed of the service control module and
the test module. It controls the system services, including IP address binding,
MAC address binding, MIRROR, broadcast suppression, port bandwidth limit,
port-based priority control, subscriber logs, port status management, switching
chip address aging time management, subscriber port loopback test, PING test,
and data stream monitoring.
