Allied Telesis AT-MR840TF - Manual (Page 26)

Product Description
6
Table 2 lists and defines the ports, hub, and network status LEDs.
For detailed information concerning the Collision LED, see “Verifying Collision
LED” on page 14.
Table 2: Port and Hub Status LEDs
LED Color Description
LINK OK (port) green ON indicates that a valid link exists.
No light indicates that the link is not OK. If the
polarity is incorrect, the LINK OK light will be OFF
until polarity is corrected by the multiport hub’s UTP
port.
RECEIVE (port) amber FLASHING indicates that there is activity (packet
transmission) on the port, that the Link is OK, that
the port is not partitioned. Brief flashes indicate low
traffic levels.
LINK (uplink
port) green ON indicates that a valid link exists.
TX (uplink port) green ON indicates that the port is transmitting packets.
RX (uplink port) green ON indicates that the port is receiving packets.
ACTIVITY (hub) amber FLASHING indicates that the hub is transmitting
packets.
COLLISION
(hub) amber FLASHING indicates that packet collisions are
occurring on the hub.
POWER (hub) green ON indicates that the hub is receiving power.
NETWORK
LOAD amber FLASHING indicates the percentage of network
utilization from 1%, 2%, 4%, 8%, 16%, 32%, 64%
to 80+%.
MR840TF_Book Page 6 Tuesday, November 11, 1997 3:46 PM