Automatic Configuration at Power-Up
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1 . 2 . 3 A u t o m a t i c C o n f i g u r a t i o n a t P o w e r - U p
The management module in the TRXMIM’s host MMAC stores all
user-configured port assignments in its NVRAM. Upon hub
start-up or TRXMIM reset, the management module reissues its
stored configurations to the TRXMIM so that all port assignments
set before power-down are reinstated at next power-up.
Some management modules, including the TRMM-2, also have
hardware jumpers or a switchblock to hold default ring speed
settings which are issued to all modules in the absence of
user-defined configurations stored in NVRAM.
If the TRXMIM receives no management-issued configuration
information at start-up (i.e. configuration settings from a
management module’s NVRAM are not available), the device uses
the configurations dictated by its hardware default settings.
Assignments from a management module always override the
TRXMIM’s hardware defaults.
D e f a u l t P o r t A s s i g n m e n t s
All TRXMIM TCU ports are assigned by default to FNB ring 1. This
default is not user-configurable.
D e f a u l t R i n g S p e e d s
The FNB ring 1 default ring speed is set by the position of the
Default Ring Speed Jumper. See Section 3.2.2,
for configuration instructions.
The default ring speed setting for all other rings (FNB rings 2 - 4
and Auxiliary rings 1 & 2) is 16 Mb/s. This default is not
user-configurable.
Management module defaults or NVRAM settings for ring speeds
override all TRXMIM hardware default ring speed settings. (The
TRMM-2, for example, has a switchblock on which ring speeds are
defined for the entire hub.) Consult the management module’s
manual for instructions on setting ring speeds throughout the hub.
