1
O
VERVIEW
The 3Com
®
Router 3000 series routers provide the following types of interfaces:
■
Ethernet interface
■
Synchronous/asynchronous serial interface
■
Auxiliary (AUX) port
■
ISDN BRI S/T and U port
■
CT1/PRI port
These features allow you to combine the various technologies, such as PSTN/ISDN,
FR (Frame Relay), X.25, leased line, and T1 line, for networking. These multiple
interfaces also allow Router 3000 series routers to interoperate with the products
of other manufacturers on all levels.
Router 3000 routers use three types of memory:
■
Synchronous Dynamic Random Access Memory (SDRAM) — Saves router
operation system software
■
Flash memory — Saves router program files, configuration files and so on
■
Boot ROM — Saves boot and initialization programs of the router
Router 3012
Figure 1 illustrates the Router 3012.
Figure 1
Router 3012
Power LED
100M Ethernet LED
SERIAL0 LED
SERIAL1 LED
AUX LED
System LED
Summary of Contents for Router 3012
Page 6: ...6 CHAPTER ABOUT THIS GUIDE ...
Page 18: ...18 CHAPTER 1 OVERVIEW ...
Page 34: ...34 CHAPTER 3 INSTALLING THE ROUTER ...
