Cisco WS-C1924-EN-DC - 100Mbps Ethernet Switch Manual de usuario descargar pdf (Pagina 9)

Overview 1-9

LEDs and Modes

Port Status Mode

This is the factory default mode. The colors of the LEDs above the ports show the status of

the corresponding ports (Table 1-6).

Note The LEDs are solid amber for approximately 30 seconds after power up during

spanning-tree discovery.

Bandwidth Utilization Mode

In the UTL mode, the port LEDs as a group show the switch bandwidth being used at any

one time (see Figure 1-4 and Figure 1-5). The more LEDs that are lit, the higher the

bandwidth being used. The peak utilization is recorded in the bandwidth-capture interval,

described in the “Bandwidth Usage Report” section on page 4-81.

Table 1-6 Port Status Mode LED Description

Color Port Status

Off No link.

Solid green Link operational (with no link activity).

Flashing green Link operational (with activity).

Alternating green

and amber

Link fault. Error frames can affect connectivity. Excessive collisions

and cyclic redundancy check (CRC), alignment, and jabber errors are

monitored for a link-fault indication.

Solid amber Port is not forwarding. This could be because the port was disabled by

management, suspended because of an address violation, or suspended

by Spanning-Tree Protocol (STP) because of network loops.

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Cisco WS-C1924-EN-DC - 100Mbps Ethernet Switch Manual de usuario Pagina 9