BayStack User Guide

Using the BayStack 350 10/100/1000 Series Switch
B-8
304376-B Rev 00
1000BASE-LX MDAs
There are two 1000BASE-LX (longwave gigabit) MDA models:
• The 450-1LR MDA is a single MAC MDA with a separate redundant Phy
(backup Phy port). Only one Phy port can be active at any time. If the active
Phy port fails, the redundant Phy port automatically becomes the active port.
• The 450-1LX MDA is a single Phy MDA.
Both models (Figure B-4
) use longwave 1300 nm fiber optic connectors to
connect devices over single mode (3 kilometer) or multimode (550 meters) fiber
optic cable.
2Phy
(or)
Phy Select
Phy status LEDs (green):
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.
Warning:
This is a Class 1 Laser/LED product. It contains a laser light source
that can injure your eyes. Never look into an optical fiber or connector port.
Always assume that the fiber optic cable or connector is connected to a laser
light source.
Note:
The optical performance of this transceiver cannot be guaranteed when
connected to a multimode fiber plant without the use of the special offset SMF/
MMF mode conditioning patch cord (see “
1000BASE-LX Multimode
Applications” on B-10)
Table 2. 1000BASE-SX MDA Components
Item Label Description
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