Cisco Systems WSC385024TS, C3850NM210G, C3850NM41G manual Port LEDs and Modes, page, 1-11

Chapter 1 Product Overview

Front Panel

Port LEDs and Modes

Each Ethernet port, 1-Gigabit Ethernet module slot, and 10-Gigabit Ethernet module slot has a port LED. These port LEDs, as a group or individually, display information about the switch and about the individual ports. The port mode determines the type of information shown by the port LEDs. Table 1-5lists the mode LEDs and their associated port modes and meanings.

To select or change a mode, press the Mode button until the desired mode is highlighted. When you change port modes, the meanings of the port LED colors also change. Table 1-6explains how to interpret the port LED colors in different port modes.

When you press the Mode button on any switch in the switch stack, all the stack switches change to show the same selected mode. For example, if you press the Mode button on the active switch to show the SPEED LED, all the other switches in the stack also show the SPEED LED.

Table 1-5	Port Mode LEDs
Mode LED	Port Mode			Description
STAT	Port status			The port status. This is the default mode.
SPEED	Port speed			The port operating speed: 10, 100, or 1000 Mb/s.
DUPLX	Port duplex mode			The port duplex mode: full duplex or half duplex.
ACTV	Active			The active switch status.
STACK	Stack member status			The stack member status.
	StackWise port status			The StackWise port status. See the “STACK LED” section on
				page 1-14.
PoE1	PoE+ port power			The PoE+ port status.
1. Only switches with PoE+ ports.
Table 1-6	Meaning of Switch LED Colors in Different Modes
Port Mode		Port LED Color	Meaning
STAT		Off	No link, or port was administratively shut down.
(port status)
		Green	Link present, no activity.
		Blinking green	Activity. Port is sending or receiving data.
		Alternating	Link fault. Error frames can affect connectivity, and errors such as
		green-amber	excessive collisions, CRC errors, and alignment and jabber errors
			are monitored for a link-fault indication.
		Amber	Port is blocked by Spanning Tree Protocol (STP) and is not
			forwarding data.
			After a port is reconfigured, the port LED can be amber for up to 30
			seconds as STP checks the switch for possible loops.

	Catalyst 3850 Switch Hardware Installation Guide
OL-26779-02		1-11