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Cisco ME 3400E Ethernet Access Switch Hardware Installation Guide
OL-16447-01
Chapter 1 Product Overview
Front Panel
When an AC-power-supply module is installed, the AC 1 and AC 2 LEDs show which power supply is
on (see Figure 1-7).
When DC-power-supply modules are installed, the DC A and DC B LEDs show which power supply is
on (see Figure 1-7).
Ethernet Management Port LED
Table 1-5 AC-Power-Supply LEDs
Color System Status
Off AC-power-supply module is not installed.
Green AC-power-supply module is installed, and AC-power input (1 or 2) is present.
Amber AC-power-supply module is installed, and AC-power input (1 or 2) is not present.
Table 1-6 DC-Power-Supply LEDs
Color System Status
Off DC-power-supply module is not installed. A DC-power-supply module is installed, and a
single DC-power input (A or B) is used and the CLI is configured to allow a single
DC-input feed.
Green DC-power-supply module is installed, and the DC-power input (A or B) is present and is
in the operating range.
Amber DC-power-supply module is installed, and the DC-power input (A or B) is not present or
is not in the operating range.
Table 1-7 Ethernet Management Port LED
Color System Status
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, CRC1 errors, and alignment and jabber errors2 are monitored for a
link-fault indication.
1. CRC = cyclic redundancy check.
2. Jabber errors occur when data packets exceed the prescribed lengths.