Administrator Guide

Stack Port LEDs

The stack port LEDs are located to the right of each stack port. The Link LED is above the Activity LED.

Figure 4. C1048P Back Panel: Stack Port LEDs

1. Stack port 1: Activity LED 2. Stack port 1: Link LED

3. Stack port 2: Activity LED 4. Stack port 2: Link LED

Table 2. C1048P Stack Port LEDs

Stack Port LED Description

LNK Stack port link

• Off: No link is up.

• Solid green: Stack link is up.

ACT Stack port activity

• Off: No data link activity.

• Flashing green: Stack link is up and transmitting/receiving data.

Before You Start: Site Preparation

Before installing the C1048P port extender, make sure that your installation site meets these

requirements:

• Clearance: There is adequate space in front of the PE so you can read the LEDs, and adequate space

around and behind the switch for cabling, power connections, and ventilation. The AC power cord

can reach from the power outlet to the utility-panel connector. Airflow around the PE and through

the rear vents is unobstructed.

• Cabling: Route the cabling to avoid sources of electrical noise, such as radio transmitters, broadcast

amplifiers, power lines, and fluorescent lighting fixtures. Make sure that the cabling is safely away from

C1048P Hardware Description