3com corebuilder 5000 User Manual

Page of 16
C
ORE
B
UILDER
® 
5000 S
WITCH
M
ODULE
  Q
UICK
  S
TART
 
AND
  R
EFERENCE
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" des
cribe 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 
1 Blink
No light on receive fiber.
Green 
2 Blinks
Port received jabber.
Green 
3 Blinks
Port is partitioned.
Green 
4 Blinks
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