Using the BayStack 350 10/100/1000 Series Switch
B-10
304376-B Rev 00
1000BASE-LX Multimode Applications
For 1000BASE-LX multimode applications, the longwave gigabit transceivers
must be mode conditioned externally via a special offset SMF/MMF patch cord.
The offset SMF/MMF patch cord allows the same transceiver to be used for both
multimode and single-mode fiber. See your Bay Networks sales representative for
more information about the SMF/MMF patch cord.
The 1000BASE-LX transceiver is designed to mechanically accomodate the
single-mode ferrules used on one end of the special offset SMF/MMF patch cord.
Multimode ferrules must not be used because they can bind and cause damage to
the transceiver. Do not connect multimode cables directly into the 1000BASE-LX
MDA transceiver. Instead, connect a special offset SMF/MMF patch cord into the
transceiver, and then connect the multimode cable into the SMF/MMF patch cord.
For more information about gigabit transmission over fiber optic cable and mode
conditioning, refer to the following publication:
Reference Note: Gigabit Ethernet Physical Layer Considerations (Bay Networks
part number 201540-B)
The publication is available on the World Wide Web at support.baynetworks.com/
library/tpubs/
At the Web site, click on Accelar under the Routing Switches heading.
On: The corresponding Phy port is active.
Off: The corresponding Phy port is in backup mode or there is no
connection to this port.
3 Activity Port activity LEDs (green):
Blinking: Indicates network activity level for the corresponding port. A high
level of network activity can cause LEDs to appear to be on continuously.
4 1000BASE-FX SC port connectors.
Table B-3. 1000BASE-LX MDA Components
Item Label Description
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