3Com 4007, Руководство по внедрению, Страница: 54 / 684

54 C
HAPTER
2: O
VERVIEW OF THE
M
ANAGEMENT
M
ODULE
Module Overview
The Management Module is an SNMP-based network management
module that:
■
Provides chassis controller functions (such as power and temperature
monitoring), as well as management functions (such as collecting and
sending SNMP traps).
■
Provides a central point of contact for management of all components
in the chassis.
■
Manages power use in the chassis by:
■
Preventing newly installed modules from receiving power when
there is not enough power available
■
Allowing you to prioritize the order in which modules power off (if
there is insufficient power available)
■
Allowing you to implement fault-tolerant power, which allows the
chassis to reserve some of its power capacity to protect against a
power supply failure
■
Exchanges information with all other modules through the 10 Mbps
management LAN, which keeps management traffic separate from
network traffic.
Module
Components
The Management Module consists of the following two components:
■
System Management Component (SMC)
■
System Controller Component (SCC)
Both components share the same in-rush current, clocks, and backplane
interfaces. The remaining circuits in both components are separated and
are controlled by two dedicated CPUs.
The four-character LED display on the Management Module front panel
shows the status of the SMC component. The Active and Stndby
(Standby) LEDs indicate the SCC status on the front panel also.