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You can configure DMM to force a mastership election when it is
inserted into a hub. This option may be used to ensure that the DMM
gets the opportunity to obtain the appropriate authority after it is
removed and inserted back into the hub. The command to enable the
forcing of mastership is as follows:
8260A> set device reset_mastership enable
− DIP configuration
Each 8260 media module has a set of DIP switches which allow you to
configure how the module should operate. Also, each module has a
non-volatile RAM which is used to store the configuration information
that you set for the module via DMM commands. This configuration
information is sent by DMM to the module when the module is installed
in the hub.
Once installed, the 8260 module will be configured according to the
following procedure:
- The 8260 module attempts to configure itself from either its DIP
switch settings or the onboard NVRAM. The setting of one of the DIP
switches on the module determines if the module should try to use
its DIP switch settings or the onboard NVRAM.
- If a Master DMM is installed, the requested configuration is
submitted for approval:
•
If the DMM has a saved configuration for module/slot, it overrides
the requested configuration.
•
If the DMM does not have a saved configuration for the
module/slot, it checks the requested configuration for validity:
− If valid, the requested configuration is used.
− If not valid, or DIP switches are used, the module is isolated
and ports are disabled.
- If no Master DMM is installed, the module tests the requested
configuration for validity:
•
If valid, the requested configuration is used.
•
If not valid, or not present (NVRAM selected, but has no
configuration), the module is isolated and ports are disabled.
The above procedure will happen if you have issued the following
command:
8260A> set device dip_configuration disable
However, you may configure your hub to bypass the above procedure
and force the DIP switch settings on the module to be used all the time.
To do so, you must issue the following command:
8260A> set device dip_configuration enable
− Trap receiver
You can enable DMM to receive traps from the other SNMP devices
(such as other 8260 hubs) in your network. To do so, you must issue the
following command:
8260A> set device trap_receiver enable
Chapter 4. 8260 Distributed Management Architecture 53