INSTALLATION
2-4
2.2.3 Clearing NVRAM
The hub’s configuration is stored in the NVRAM of the management
module. To clear NVRAM and erases the configuration of the hub (except
for the System Time and System Date), move Switch 7 to the opposite
position. This is a toggle switch therefore ON/OFF are irrelevant.
2.2.4 Resetting Passwords To Defaults
Switch 8 is a toggle switch. By changing the current position of Switch 8,
all user-set SNMP Community Names (passwords) are cleared and
returned to factory defaults. (See the TRMM-4 Local Management
User’s Guide for an explanation of SNMP Community Names.)
2.3 MANAGEMENT MODULE OVERRIDES
The TRMM-4 treats the configuration setting of single ring MIMs
differently than port switching MIMs.
2.3.1 Single Ring MIMs
The TRMM-4 does not override the settings of single ring MIMs. The
TRMM-4 reads the configuration settings of the jumpers/switches on
single ring MIMs and implements them.
2.3.2 Port Switching MIMs
Although port switching MIMs have switches and jumpers to set their
configuration, the TRMM-4 controls the speed of the FNB rings and the
assignment of ports to different rings. This may cause conflicts that result
in the overriding of a MIM’s configuration or bypassing a MIM ring from
the FNB.
At boot-up a non-configured TRMM-4 detects the slot and configuration
of each Token Ring MIM in the hub. It remembers this information by
saving it to NVRAM. Thus, once the TRMM-4 stores the configuration of
a port switching MIM:
•
Any subsequent changes to the MIM’s switches and jumpers will be
overridden.
•
MIM rings set to a different speed than FNB rings (at power-on) are
bypassed from the FNB.
Содержание TRMM-4
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Страница 30: ...INTRODUCTION 1 12 ...
Страница 44: ...INSTALLATION 2 14 ...
Страница 52: ...MONITORING AND TROUBLESHOOTING 3 8 ...
Страница 70: ...SUPPORTED MIB GROUPS D 4 ...
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