APPENDIX SCE 2000, Руководство пользователя

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A-3
Cisco SCE 2000 4xGBE Installation and Configuration Guide
OL-21096-02
Appendix A The External Optical Bypass Module
The External Optical Bypass Module Front Panel
Figure A-2 Operation of the Bypass Module When Active
The External Optical Bypass Module Front Panel
The front panel of the External Optical bypass module ( Figure A-3 ) contains the following components:
• 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)
Sub
Tx Rx
Net Control No Bypass
Tx Rx
Router Switch
External optical
bypass module
SCE 2000 4xGBE
LINK RX
Cisco SCE 20
00 Series
4xGBE
TX
RX MM
TX
LINK RX TX
RX MM
TX
LINK RX TX
RX MM
TX
LINK RX TX
RX MM
TX
GBE-1 SUB
LINE NET
PWR B STAT US
PWR A
BYPASS
10/100/
1000
LINK/ ACTIVE
10/100/ 1000
LINK/
ACTIVE
GBE-2 SUB LINE/CA
SCADE NET
AUX
CONSOLE
MNG 2 MNG 1
92807