Cabletron Systems 2H253-25R manual Device electronics not

Using LANVIEW

The LED MODE switch is located on the front panel of the 2H253-25R as shown in Figure 4-1. This switch enables the user to change the function of the port LEDs. When the LED MODE switch is moved to the left, the LEDs indicate the receive (RX) and transmit (TX) status of the respective fixed ports (ports 1 through 24). When the LED MODE switch is moved to the right, the port LEDs indicate whether the respective ports are operating in the standard or full duplex mode (FDX) and if their operating speed (SPD) is 10 or 100 Mbps.

NOTE

The LED mode switch does not change the function of any LEDs on an installed HSIM or VHSIM.

Table 4-1describes the LED indications and provides recommended actions as appropriate.

Refer to the HSIM or VHSIM user’s guide for a description of the HSIM or VHSIM LED indications.

NOTE

The terms flashing, blinking, and solid used in Table 4-1indicate the following: Flashing indicates an LED is flashing randomly.

Blinking indicates an LED is flashing at a steady rate (approximately 50% on, 50% off). Solid indicates a steady LED light. No pulsing.

Table 4-1 LANVIEW LEDs

LED Color State Recommended Action

PWR	Off	Device electronics not
		receiving power from power
		supply(ies).

1.Ensure that the power cords are plugged in correctly and that there is power at the power source.

2.Contact Cabletron Systems for assistance.

Green	Functional. Power supply(ies)	None.
	operating normally.
Amber	Indicates loss of power supply	1. Ensure that the power cords are
	redundancy.	plugged in correctly and that there is
		power at the power source.
		2. Contact Cabletron Systems for
		assistance.

4-2Troubleshooting