APPENDIX SCE 2000, Руководство пользователя

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A-6
Cisco SCE 2000 4xGBE Installation and Configuration Guide
OL-21096-02
Appendix A The External Optical Bypass Module
Installing the External Bypass Module
Step 5
Power up the SCE 2000 platform, as explained in Basic SCE 2000 Platform Operations, page 7-1 .
Verify that the relevant GBE interfaces of the SCE 2000 platform are now in sync, as the External Optical
Bypass module is now active (in bypass), and is performing a loopback on these interfaces.
Auto-Negotiation should be configured identically for the two SCE 2000 platform GBE interfaces and
the GBE interfaces of the switch/router on either side of the External Optical Bypass module. It is
recommended that the two GBE interfaces of the SCE 2000 platform, as well as the GBE interfaces of
the switch/router on either side of the External Optical Bypass module, be configured to
Auto-Negotiation = OFF
Step 6 Connect the control cable (supplied in the kit) from the Bypass 9-pin D-Type connector on the rear panel
of the SCE 2000 platform to the Control connector on the External Optical Bypass module.
The SCE 2000 platform immediately starts providing power to the External Optical Bypass module, so
the bypass module becomes inactive, and starts transferring the traffic to the SCE 2000 platform. The
“
No Bypass ” LED should therefore be lit.
Figure A-5 displays the external optical bypass module connectivity.
Figure A-5 External Optical Bypass Module Connectivity
LINK RX
Cisco SCE 2000
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 STATUS PWR A BYPASS
GBE-2
SUB LINE/CASCADE NET
Switch
External optical
bypass module
Switch
Subscriber 92809
Network
Switch
Power
Power
GBE GBE
GBE GBE
External optical
bypass module
Switch
GBE
link
GBE
link
Subscriber
Network