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TRXMIM OPERATING SPECIFICATIONS
2.4.4 Ring Sequence
When multiple Token Ring MIMs (set to the same ring speed) are
installed in adjacent slots within an MMAC, they are attached via
the FNB and create a larger ring network. Multiple Token Ring
MIMs are automatically attached (when possible) at power on, but
the configuration can be modified via network management
software, attaching or detaching adjacent MIMs.
The ring sequence for the stations on each ring (the order in which
stations are logically arranged on the ring) is determined by the
physical location of each station connection in the MMAC. It
progresses in ascending slot and port number order. There is a
separate ring sequence for each ring, and the sequence is changed
each time a station is inserted or de-inserted from a ring.
To determine the ring sequence, consider only those ports inserted
into the specified ring. Begin with the lowest numbered
(right-most) slot and list (in numerical order) each port inserted into
the ring. Repeatedly move to the next slot (one position to the left)
and list the inserted ports in numerical order until all ports inserted
into the ring have been listed. The order is continuous, wrapping
directly from the MMAC's last inserted port to the first—from the
bottom of the list, right back to the top.
2.4.5 LANVIEW LEDs
There are a number LEDs on the front panel of each TRXMIM. With
the exception of the quantity of port-specific LEDs on each module,
all four TRXMIMs are equipped with the same indicators. Each
individually labelled LED uses a simple combination of colors and
ON/OFF states to provide information about its attributed
component. These components include ring speeds (16Mb) for each
ring, ring in use (IN USE) for each ring, module-level bypass (BYP),
module error (ERR), management (MGMT) or default mode, and
port status (PORT) for each port. The function of each LANVIEW
LED is discussed in detail in Section 4.2, LANVIEW LED
SIGNALS.
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