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3 - 18 ONline Ethernet Management Module Installation and Operation Guide
If you isolate a module, the isolated module cannot send or receive any
traffic from other modules in the concentrator. Initially, all ONline modules
are factory-set to network 1, but will come up isolated if a management
module is installed in the concentrator.
Use the following command to assign the Ethernet module in slot 7 to
network ethernet_1:
ONline> set module 7 network ethernet_1 [ENTER]
Assigning Module Mastership Priority
All ONline management modules are shipped from the factory with a
mastership priority level of 10. Ten is the highest priority. When multiple
management modules reside in the same concentrator, the SET MODULE
MASTERSHIP_PRIORITY command enables you to establish one of the
modules as master management module and all other modules as slaves.
An EMM master manages the network to which it is assigned, controls all
configuration, and supplies all fault-detection capabilities for the entire
concentrator. A slave management module can only listen to its assigned
network's activity. Both master and slaves can collect statistics on only one
network at a time.
The first EMM you place in a concentrator should maintain the default
mastership priority level of 10. Once installed, the priority levels of all other
EMMs should be changed to a different mastership priority level.
Use the following command to set the EMM in slot 3 to mastership priority
10:
ONline> set module 3 mastership_priority 10 [ENTER]
Once mastership priorities are assigned, you must issue the RESET
MASTERSHIP command to initiate an election. During an election, the
management module with the highest assigned mastership priority
becomes the master. The new mastership setting is in effect immediately,
but you must use the SAVE MODULE_PORT command to save this priority
permanently.