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11
Part 1 - Introduction
LED Status Indications
Mode
Status
Color
Description
LNK/ACT
(Link/Activity)
On
Amber
Normal network connection at 10/100Mbps
Green
Normal network connection at 1000Mbps
Blinking
Amber
Data transmission over the network in progress at
10/100Mbps
Green
Data transmission over the network in progress at 1000Mbps
Off
-
No network connection or a problem with the connection
PoE
(while PoE
LED button is
pressed)
On
Amber
Connected to an IEEE 802.3af powered device
Green
Connected to an IEEE 802.3at powered device
Off
-
Not connected to a powered device
3
RJ-45 Uplink Ports
RJ-45 uplink ports are used to connect the switch to a higher tier device. These ports are
useful when cascading multiple network devices.
Model
Port Number
CRIS12
9 (top) and 10 (bottom)
CRIS28
25 (left) and 26 (right)
• If not using for uplinking purposes, these ports can be used as service ports, but they do not
support PoE.
• The ports operate in different modes based on the network speed. (10/100Mbps: full/half
duplex, 1000Mbps: full duplex)