4-26 Riverstone Networks RS 8000/8600 Switch Router Getting Started Guide
Using Redundant Control Modules
Initial Configuration
Software/Hardware Versions
Make sure that the software images are the same on the primary CM and backup CM – it is possible to have two
different software images on each Control Module. If the images are not the same and fail over occurs, the image on
the backup CM may or may not be able to process the configuration of the failed primary CM.
Caution
Both the primary and backup Control Modules should be of the same hardware
version, and should contain the same amount of memory.
Changing Mastership
Whenever the power is cycled on the RS, the default relationship between the primary and backup CM is reestablished.
In other words, the Control Module in slot CM (whatever its role) becomes the primary CM and the Control Module
in slot CM/1 becomes the backup CM. If a hardware fail over occurs, do not power down the RS. Instead, hot-swap
the new Control Module into slot CM. As it boots, it will assume the role of the backup CM, and will obtain its
configuration from the current primary CM. Enter the
save startup
command on the primary CM. Once this file
transfer is complete, you can restore the default roles of the Control Modules by entering the
system redundancy
change-mastership
command.
Hot-Swapping
Never hot-swap a line card either in or out of the RS 8000/8600 while the backup CM is still booting. Always wait
until both CMs are fully operational before hot-swapping line cards.
Содержание RS 8000
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