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13
14.0 Mixed Technology SwitchModule
Front Panel Features
This section describes the Fiber Distributed Date Interface
(FDDI) ports and LEDs on the front panel of the following
SwitchModules:
■ 10BASE-T and FDDI Mixed Technology SwitchModule
■ 10BASE-FB/FL and FDDI Mixed Technology
SwitchModule
Section 11.0, "10BASE-T SwitchModule Front Panel
Features", and Section 13.0, "10BASE-FB/FL
SwitchModule Front Panel Features" describe the
10BASE-T and 10BASE-FB/FL ports, respectively. Section
10.0, "Common Front Panel Features" describes the
PacketChannel and Module Status LEDs, and Reset button.
14.1 LEDs
FDDI LEDs are green only (not yellow). The following table
explains the FDDI port status LED blink sequences and the
10BASE-T and 10BASE-FB/FL port status or activity LED
blink sequences:
LED State Indicates
FDDI Port Green On Port is enabled and ring is
operational.
Green
Blinking
Port is connecting.
Off Port or port functions are
disabled.
10BASE-T Port Green On Port is enabled and link is OK.
Green
Blinking
Link failure or waiting for
network connection.
Off Port or port functions are
disabled.
Yellow
On
Heavy port traffic activity.
Yellow
Blinking
Normal port traffic activity.
10BASE-FB/FL Port Green On Port is enabled and link is OK.
Green
1Blink
No light on receive fiber.
Green
2Blinks
Port received jabber.
Green
3Blinks
Port is partitioned.
Green
4Blinks
Remote fault.
Off Port or port functions are
disabled.
Yellow
On
Heavy port traffic activity.
Yellow
Blinking
Normal port traffic activity.
14.2 Ports
FDDI ports on mixed technology SwitchModules are Dual
Attach Station (DAS) (A/B) ports that use MIC connectors.
14.3 Optical Bypass Connector
FDDI SwitchModules support one optical bypass connector
per DAS port. Use the optical bypass connector to preserve
a dual FDDI ring in the event of a station failure. The
optical bypass connector accepts an optical bypass switch
of type AMP FOTP-34 Method B using a mini-DIN
connector.
6614M-FTP-A
10BASE-T and FDDI
SwitchModule
Model Number
3C96614M-FTP-A
6612M-FF-A
10BASE-FB/FL and FDDI
SwitchModule
Model Number
3C96612M-FF-A
OPTICAL
BYPASS
A
B
OPTICAL
BYPASS
A
B
B
A
B
A
MIC
connectors
FDDI Port Status
LEDs