Cabletron Systems 2000, Getting Started Manual, Page: 29 / 92

SmartSwitch Router 2000 Getting Started Guide 29
Chapter 1: Features Overview
External Controls
The SSR 2000 has the following external controls. Where appropriate, this guide describes
how to use the controls.
• A Male DB-9 Data Communications Equipment (DCE) port for serial connection from
a management terminal. Use this port to establish a direct CLI connection to the
SSR 2000. The default baud rate is 9600.
• A 10Base-T/100Base-TX Data Terminal Equipment (DTE) port for network connection
from a management terminal. The port is configured as Media Data Interface (MDI).
Use this port to establish a CoreWatch management connection to the SSR 2000 over a
local or bridged Ethernet segment.
• A Reset switch (RST). Use this switch to reboot the SSR 2000’s motherboard from the
internal boot flash in the event of a system failure. The Reset switch is recessed in the
SSR 2000’s chassis, so you will have to use a tool like a small allen wrench to activate
the switch.
• System switch (SYS). This switch stops the system software and starts the debugger.
Normally, you should not use this switch unless directed to do so by Cabletron Systems
personnel.
• Status LEDs.
Motherboard Features
The internal “motherboard” performs all the SSR 2000’s computing and routing functions.
It contains system-wide bridging and routing tables. Traffic that does not yet have an
entry in the L2 and L3/L4 lookup tables on individual expansion modules is handled by
the motherboard. After processing traffic, the motherboard updates the L2 and L3/L4
tables on the ports and/or expansion slot(s) that received the traffic. The ports/expansion
slot(s) thus “learn” about how to forward traffic.
Table 3. Status LEDs
LED Label Description
OK When this LED is on, the SSR 2000 and all expansion modules are
functioning correctly.
ERR When this LED is on, a fatal system error has occurred. Activate the
SSR 2000’s boot PROM to reboot the router.
HBT This LED flashes when the SSR 2000’s boot PROM is active.
DIAG When this LED is on, the SSR 2000 is in diagnostic mode. (While in
diagnostic mode, you will notice several other LEDs on the SSR 2000
are active, as well.)