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NBR-SERIES Installation Guide Page 1-1
CHAPTER 1
INTRODUCTION
The Cabletron Systems NBR-SERIES of
Network Bridge Routers
(NBR-220, NBR-420, NBR-620)
provide bridging and routing solutions
for Ethernet, token ring, FDDI, ATM, or wide area networks. The
NBR-SERIES of standalone hubs consist of the following three models:
•
NBR-220
– two Ethernet Port Interface Module (EPIM) ports
•
NBR-420
– two EPIM ports, and two Bridge/Router Interface Module
(BRIM) ports
•
NBR-620
–
four EPIM ports, and two BRIM ports
Figure 1-1 The NBR-SERIES of Network Products
NOTE
This manual uses the term NBR to describe the NBR-220,
NBR-420, and NBR-620 unless otherwise specified.
NBR-220
TWO PORT BRIDGE
WITH
LANVIEW
®
RECEIVE
TRANSMIT
COLLISION
STAND BY
PORT
B A
PWR
CPU
COM
RESET
PORT B PORT A
EPIM-A
PWR
EPIM-A
PWR
NBR-420
MULTI PORT BRIDGE ROUTER
WITH
LANVIEW
®
RECEIVE
TRANSMIT
COLLISION
STAND BY
PORT
B A
PWR
CPU
COM 2 COM 1
DISPLAYRESET
PORT B PORT A
PORT F PORT E
EPIM-A
PWR
EPIM-A
PWR
NBR-620
MULTI PORT BRIDGE ROUTER
WITH
LANVIEW
®
RECEIVE
TRANSMIT
COLLISION
STAND BY
PORT
D C B A
PWR
CPU
COM 2 COM 1
DISPLAYRESET
PORT D PORT C PORT B PORT A
PORT F PORT E
EPIM-A
PWR
EPIM-A
PWR
EPIM-A
PWR
EPIM-A
PWR
BRIM-A100
STY
LNK
XMT
RCV
LNK YEL STB DSR LNK
T1/FT1
TST RED SYN CTS TST
SYNC
BRIM-WT1
BRIM-A100
STY
LNK
XMT
RCV
1092_01
LNK YEL STB DSR LNK
T1/FT1
TST RED SYN CTS TST
SYNC
BRIM-WT1