AudioCodes Mediant 8000, Инструкция по установке, эксплуатации и обслуживанию, Страница: 223 / 924

Version 6.6 223 October 2014
Installation & Operation Manual 27. Working with the SC Boards
27 Working with the SC Boards
The SC (System Controller) boards provide a management interface to the Mediant
8000 and are responsible for system configuration, status monitoring and high-
availability operations.
SC boards do not participate in VoP (call control and media) traffic, handled by the
TP-6310 and the TP-8410 Media Gateway boards. Instead they operate as a “host” of
the Mediant 8000 chassis, managing the configuration of all chassis elements
(including Media Gateway boards), constantly monitoring the health status of all
hardware components and reporting any malfunction to the management stations. All
management operations (configuration, fault and status monitoring) are performed
through the SC boards.
See the 'System Controller (SC) Board' for a detailed description of the SC board’s
hardware.
27.1 Redundancy Mode
There are two SC boards in the chassis, installed in slots 1 and 2. Each board has a
local IP address (in the OAM subnet). The two SC boards operate in an asymmetric
1+1 redundant mode. At any time, one of the SC boards operates as the Active board
and performs chassis management tasks, while the other SC board operates as the
Standby board. A Global IP address (also belonging to the OAM subnet) is assigned
to the Active SC board to provide a "single point of contact" for SNMP and CLI
management.
When the Active SC board fails, the Standby SC board takes over activity and
becomes the Active one. The Global IP address is moved to the new Active SC board
during activity switchover.