Configuration Guide User guide

98 FastIron Configuration Guide
53-1002494-02
Hitless management on the FSX 800 and FSX 1600
Benefits of hitless management
The benefits of Hitless management include the following:
• The standby management module (the module that takes over the active role) and all interface
modules in the chassis are not reset
• Existing data traffic flows continue uninterrupted with no traffic loss
• Port link states remain UP for the duration of the hitless management event
• System configurations applied through Console/SNMP/HTTP interfaces remain intact
• Hitless switchover can be used by a system administrator, for example, to perform
maintenance on a management module that has been functioning as the active management
module. Some advantages of a hitless switchover over a hitless software reload are:
• A manual switchover is quicker, since the standby module does not have to reboot.
• Switched traffic through the Ethernet interfaces on the standby management module is
not interrupted.
NOTE
All traffic going through Ethernet interfaces (if present) on the management modules will be
interrupted during a hitless OS upgrade. This is because both management modules must be
reloaded with the new image. This applies to hitless OS upgrade only. It does not apply to hitless
switchover or failover, which does not interrupt traffic going through Ethernet interfaces on the
standby management module (the module that takes over the active role).
Supported protocols and services for hitless
management events
Table 18 lists the services and protocols that are supported by Hitless management. Table 18 also
highlights the impact of Hitless management events (switchover, failover, and OS upgrade) to the
system’s major functions.
NOTE
Services and protocols that are not listed in Table 18 may be disrupted, but will resume normal
operation once the new active management module is back up and running.