INTRODUCTION
1-2
Chapter 4,
Testing and Troubleshooting
, describes checks to perform if
operational problems are encountered after installation. It also describes
LANVIEW LEDs, Cabletron Systems built-in, visual diagnostic and status
monitoring system, and POWER UP DIAGNOSTIC tests.
1.2 TRMM AND TRMMIM OVERVIEW
The TRMM and TRMMIM (Figure 1-1) can be used together for
managing and monitoring multiple Token Rings in the same MMAC hub.
Both modules are controlled by Intel’s™ i960 CPU running at 24 MHz.
Figure 1-1. The TRMM and TRMMIM
TRMM
TOKEN RING
SN
16 Mb
NSRT
LWRP
BOK
ERR
RESET
F
N
B
C
O
M
1
C
O
M
2
16 Mb
NSRT
LWRP
BOK
ERR
F
N
B
C
O
M
1
C
O
M
2
TRMMIM
TOKEN RING
SN
RESET
TRMMBook2 Page 2 Tuesday, March 5, 1996 1:13 PM
