D-Link DES-5220TF Product Manual - Page 39

FDX Duplex Mode

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Fast Ethernet Switching System User's Guide Col Col means collision. The Col LED is amber when collisions occur at the port. Collisions are normal on the network. You should be concerned when a high number of collisions happen at the port. Table 8: 2-Port Tx Module LEDs LED 100/10 (Speed) (Green) Link (Link) (Green) FDX (Duplex Mode) (Green) Tx (Transmission) (Green) Rx (Receiving) (Green) Col (Collision) (Amber) Lit Port is set for 100 Mbps Port is linked to another device Port is in full duplex Port is transmitting data Data is being received at the port Collisions are occurring at the port Dark Port is set for 10 Mbps No link Port is in half duplex Port is not transmitting data Port is not receiving data No collisions are occurring LEDs 32

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Fast Ethernet Switching System User’s Guide
LEDs
32
Col
Col means collision. The Col LED is amber when collisions occur at the port.
Collisions are normal on the network. You should be concerned when a high
number of collisions happen at the port.
Table 8: 2-Port Tx Module LEDs
LED
Lit
Dark
100/10 (Speed)
(Green)
Port is set for 100 Mbps
Port is set for 10 Mbps
Link (Link)
(Green)
Port is linked to another
device
No link
FDX (Duplex Mode)
(Green)
Port is in full duplex
Port is in half duplex
Tx (Transmission)
(Green)
Port is transmitting data
Port
is not transmitting data
Rx (Receiving)
(Green)
Data is being received at
the port
Port is not receiving data
Col (Collision)
(Amber)
Collisions are occurring at
the port
No collisions are occurring