Cabletron Systems 520 - Manual (Page 25)

Product Introduction
1-5
Front and Back Panel Components
The following sections describe the front and back panel components for the
SSR-510 or SSR-520 routers.
Front Panel Components
Table 1-1 describes the front panel components, including LEDs, that are
illustrated in Figure 1-1.
For problem-solving information using the LEDs, refer to Appendix A.
Table 1-1. Front Panel LEDs and Connectors
Item Icon Name Description
1 Power LED Lights when the router has power.
2 Module OK LED Lights when the router passes self-
test.
3 Network OK LED Indicates network connection or port
state.
4 Network Activity
LED Indicates network traffic connection.
Blinks faster as traffic becomes
heavier.
5 Port 1 Serial Line
OK LED Indicates self-test pass or failure.
6 Port 1 Serial Line
Activity Indicator Indicates operation mode on port 1.
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