The S-Series I/O modules when combined in a chassis selects a master module to control the overall management of the system. All information that the master module controls is distributed to all modules in the chassis. In the event that the master module is unable to continue the management task, another module automatically assumes responsibility for answering management queries and distributing system information.
If a new module is inserted into the system, the new module inherits all system parameters and all firmware files stored on each module in the system. Any firmware files stored on the new device, which are not common to the system, are automatically removed. If the new module does not have a copy of the current system’s boot image, it is automatically upgraded, and then the module re-initializes and joins the system.
NOTE: If the new module requires a newer firmware image than the image running in the chassis, the master module MUST be upgraded to the newer firmware before inserting the new module. If the system isn’t upgraded prior to the installation, the new module does not complete initialization and join the rest of the chassis. It remains in a halted state until the running chassis is upgraded to a compatible firmware version.
The system treats the following conditions as if a new module (I/O or I/O fabric module) has been installed:
Configuration may be cleared for other reasons including (but not limited to):
- Moving module from one slot to another
- Moving module to another chassis
- If an Option Module is added or removed from a blade* (see Option Module Behavior table below)
If a module needs to be replaced, it inherits all the configuration settings of the previous module if the new module is an exact replacement of model number, slot number, and Option Module (if one was previously installed). Any configuration files that were stored in the file system of the newly inserted module are not deleted and are available to reconfigure the system.
- DIP switch 7
- CLI command
- MIB manipulation
If configuration exists for an Option Module (or its ports) that configuration remains after the Option Module is removed until one of the preceding clearing events takes place. This means an Option Module could be removed, RMA-ed, and then replaced with a like type and the configuration for those ports is restored, even if the board is used without the Option Module in the interim.