support Spanning Tree or Fast Spanning Tree protocols. By default,
transmission of data will travel via the primary pat h. If a link failure is
detected, transmission will automatically be switche d to the secondary
path by Spanning Tree Protocol, delivering non-stop network con nectivity.
LEDs
Front panel LEDs provide at-a-glance network st atus and real-time
connectivity information. NOTE : The PWR (power) LED is located on
the rear panel on some models.
7
LED Status Indication
100 On Data packets are bei ng transmitted at 100 Mbps.
O ff Dat a packets are being transmitted at 10 Mbp s.*
1000 On D ata packets are being transmitted at 10 00 Mbps.
O ff Dat a packets are being transmitted at 10/100 M bps.*
ACT On Data is being tran smitted/received.
ALM On A failure ha s occurred on a ber or copper li nk.
COL On Data collisions are oc curring.
FD/FDX On The device (or corresponding link) is opera ting in full
duplex mode.
O ff Th e device (or corresponding link) is oper ating in half
duplex mode.
LFS On A break or disruption exists in co pper or ber links.
LNK On A link has been established with a c ompliant device.
Flashin g Data is being transmitted/received (LN K/ACT combined).
O ff No va lid link is established to the por t.
PRI On The primar y link is receiving link pulses fro m a
compliant device.
O ff Th e signal has been lost on the primar y ber port.
PWR O n Power i s being received for normal ope ration.
O ff No p ower is being received.
RCV On Dat a packets are being received.
Flashing Dat a packets are being received at a slower r ate.
Off No d ata packets are being received.
RDT O n Th e redundant link is receiving link pul ses from a
compliant device.
O ff Th e signal has been lost on the redundant  ber port.
* Applicablewithmulti- speedmodels.