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Cisco ME 3800X and ME 3600X Switch Hardware Installation Guide
OL-22168-01
Chapter 1 Product Overview
Rear Panel
Port LEDs Description
Each RJ-45 port, SFP module slot, and SFP+ module slot has a port LED. These port LEDs, as a group
or individually, display information about the switch and about the individual ports.
Rear Panel
Note The rear panel is the same for the Cisco ME 3800X and ME 3600X switches.
The rear panel on the switch has two power supply module slots and a ground connector. Power supply
module slots can accept AC or DC input power supply or a fan module. See Figure 1-4.
Figure 1-4 Switch Rear Panel
Table 1-11 Port LED
LED Color Meaning
Off No link, or port was administratively shut down.
Green Link present but not sending or receiving data.
Blinking green Activity. Port is sending or receiving data.
Alternating
green-amber
Link fault. Error frames can affect connectivity, and errors such as 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 remain amber for up to 30 seconds
as STP checks the switch for possible loops.
1 Power supply module slot 2 (AC input
power supply installed)
3 Chassis ground connection
2 Power supply module slot 1 (fan
module installed)
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