21
Table 10
describes the 450-1LR MDA and the 450-1LX MDA
front-panel components.
Table 10 450-1LR and 450-1LX MDA description
Item
Label
Description
1
Link
Communication link LEDs (green):
On: Valid communications link.
Off: The communications link connection is
bad or there is no connection to this port.
Blinking: The corresponding port is
management disabled.
2
PHY
(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-X SC port connectors (see
“1000BASE-LX Multimode Applications” on
page 30
for special requirements).
