Figure 8-29 Y-Cable Protection; Splitter Protection - Cisco ONS 15454 DWDM Reference Manual

Chapter 8 Transponder and Muxponder Cards
Figure 8-29
Client

8.13.2 Splitter Protection

Splitter protection, shown in
protection, a client injects a single signal into the client RX port. An optical splitter internal to the card
then splits the signal into two separate signals and routes them to the two trunk TX ports. The two signals
are transmitted over diverse optical paths. The far-end MXPP or TXPP card uses an optical switch to
choose one of the two trunk RX port signals and injects it into the TX client port. When using splitter
protection with two MXPP or TXPP cards, there are two different optical signals that flow over diverse
paths in each direction. In case of failure. the far-end switch must choose the appropriate signal using
its built-in optical switch. The triggers for a protection switch are LOS, LOF, SF, or SD.
Figure 8-30
Client
78-18343-02
Y-Cable Protection
Y cables
TX
RX
Figure 8-30, is provided with TXPP and MXPP cards. To implement splitter
Splitter Protection
Protected Card
Client
Splitter
Port
RX
TX
Switch
Client
Port
"Working" card
(TXP or MXP)
"Protection" card
(TXP or MXP)
Client
Port
Trunk
Port
Trunk
Port
Cisco ONS 15454 DWDM Reference Manual, R8.5
8.13.2 Splitter Protection
Trunk
Port
Working
Trunk
Port
Protect
Working
Protect
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