Gefen EXT-DVIKVM-LAN, User Manual, Page: 5 / 64

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• CAT-5 or CAT-6 cables should not exceed 330 feet (100 meters) between the
Sender / Receiver unit and the network.
• Shielded (STP) CAT-5 or CAT-6 is recommended. However, un-shielded (UTP)
CAT-5 or CAT-6 is acceptable.
• If If terminating network cables in the field, please adhere to the TIA/EIA568B
specification. See the Network Cable Diagram for details.
• The Gefen DVI KVM over IP features the ability to generate compat ble EDID and Hot
Plug signals when working with different brands of source devices and monitors.
• This product does not support HDCP.
• Dual-link resolutions are not supported.
The following table details the IP and IP port use of the DVI KVM over IP. Each “X” in the
table, below, represents that no specified IP port is required.
Type Sender
A D
Receiver
(Host) (Client)
Description
Link
Manager
TCP
6751
A
X
msg_channel, ast_heartbeat
UDP / MC X
D
3246 ast_heartbeat multicast port
Use the “multicast stream” multicast IP
UDP / MC 3333
D
3334
3334
A
3333
“Name Service”
Use 225.1.0.0 multicast IP
3333 listen for query; 3334 for reply
Type Sender
A D
Receiver
(Host) (Client)
Description
Video
over
IP
UDP / MC 3344
A
X control channel
TCP 3344
A
X control channel
TCP
3240
A
X
TCP unicast mode only
UDP X
D
3245 UDP unicast mode only
(unicast mode default mode uses
UDP, not TCP)
UDP / MC
X
D
3245
multicast mode only
(continued on next page)
Operating Notes
DVI KVM over IP
IMPORTANT: The use of a Gigabit switch is required when
connecting the DVI KVM over IP to a network. When using
multicast mode
, the Gigabit switch must have “jumbo frame”
capability.