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DES-7200 Configuration Guide Chapter 10 Redundancy Configuration for Management
Module
10-1
10 Redundancy
Configuration for
Management Module
This chapter describes how to configure the management module redundancy to
implement nonstop forwarding(NSF) and the system file management method of the
the management module.
This chapter includes:
1. Understanding redundant NSF of the management module
2. NSF configuration method
10.1 Understanding
Redundant NSF of
Management Module
10.1.1 Overview
NSF means that in the network device with the structure of separating control panel
from forward panel, the control panel is planned to shut down(such as software
upgrade) or not planned to shut down(such as software and hardware defect) while the
forward panel goes on forwarding and there is no forward halt or topology fluctuation
during the reboot of control side. NSF is an important part of High Availability
Architecture
Caution
DES-7200 series switch that support hot-plugging/unplugging of the
management module implements NSF in the method of the
management module redundancy.
In the machine which is installed with dual the management modules, the the master
management module is used normally while the other backup one is the slave
management module which is a substitute for the master one when the master one is
broken off or requires for the switchover. It not only enlarges exchanging capacity but
also offers management redundancy to improve the stability of device. In the running
process of the device, if the the master management module does not work well, the
device will switch to the slave one automatically without losing user’s corresponding