Cisco Systems OL-16447-01 Manual De Usuario
1-10
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
on (see
When DC-power-supply modules are installed, the DC A and DC B LEDs show which power supply is
on (see
on (see
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.
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.
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.
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
green/amber
Link fault. Error frames can affect connectivity, and errors such as excessive
collisions, CRC
collisions, CRC
1
errors, and alignment and jabber errors
2
are monitored for a
link-fault indication.
1.
CRC = cyclic redundancy check.
2.
Jabber errors occur when data packets exceed the prescribed lengths.