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Appendix A
The External Optical Bypass Module
Figure A-2
Switch

The External Optical Bypass Module Front Panel

The front panel of the External Optical bypass module
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OL-21096-02
Operation of the Bypass Module When Active
Tx
SUB Rx/Tx — GBE port that connects to the network element on the Subscriber side of the link.
NET Rx/Tx — GBE port that connects to the network element on the Network side of the link.
CONTROL — RJ-45 port that connects to the Bypass connector on the rear panel of the SCE 2000
platform. The SCE 2000 platform controls the External Optical Bypass module via this connection,
by the presence or absence of electrical power.
Pigtail fiber connectors — Four fiber cables that connect to the GBE link ports on the front panel of
the SCE 2000 platform
NET Tx
–
NET Rx
–
SUB Tx
–
SUB Rx
–
No Bypass LED:
–
ON = Bypass module is not active (GBE traffic flows through the SCE 2000 platform)
–
OFF = Bypass module is active (GBE traffic flows through the bypass module)
External optical
bypass module
Sub
Net
Rx
Tx
Rx
PWR A
PWR B
STATUS
MNG 1
BYPASS
Cisco SCE
MNG 2
CONSOLE
2000
LINK/
10/100/
AUX
LINK RX
TX
4xGB E
Series
ACTIVE
1000
ACTIVE
LINK/
10/100/
LINK RX
TX
1000
LINK RX
TX
LINK RX
RX
MM
TX
TX
RX
MM
TX
RX
MM
TX
RX
MM
SUB
GBE-1
TX
LINE
NET
GBE-2
SUB LINE/CASCA
DE NET
SCE 2000 4xGBE
(Figure
Cisco SCE 2000 4xGBE Installation and Configuration Guide
The External Optical Bypass Module Front Panel
Router
Control
No Bypass
A-3) contains the following components:
A-3