
2-1
Hardware Installation Guide
2-1
Hardware User’s Guide
Chapter 2
Product Overview
Bridge/Router Interface Modules (BRIMs) reside in, and provide additional
connectivity/functionality to, various Cabletron MIMs and hubs (e.g. the EMM-
E6 or MicroMMAC). Cabletron’s CRBRIM-W/E remote access router provides
multi-protocol router capability for Cabletron MMAC (Multi-Media Access
Center) modules with BRIM and EPIM (Ethernet Port Interface Module) slots.
The CRBRIM-W/E utilizes a fixed configuration of two WAN ports, and one
internal Ethernet port. The two high density WAN ports support V.35, X.21,
RS449, RS422, RS530, and RS232 interfaces. The CRBRIM-W/E uses Cisco
Systems
®
routing software and is capable of supporting Frame Relay, X.25, DDN
X.25, SMDS, T1/E1, and DDS circuit connections.
The CRBRIM-W/E uses a FLASH EEPROM and is shipped with system code
operating from Flash memory by default. (For more information on system-code
operation, see Chapter 3, section 3.2 “System Operation Prerequisites.”)
Figure 2-1 shows a front view of the CRBRIM-W/E.
Figure 2-1. CRBRIM-W/E
Sections of this chapter follow:
•
System Specifications
•
Memory Configurations
•
Protocol Support
LAN
PWR
SYS
RESET
S1
S0
CONSOLE
S1
S0