Splitter Protection; Figure 14-68 Y-Cable Protection - Cisco ONS 15454 DWDM Installation And Operation Manual

14.9.2 Splitter Protection

Figure 14-68 Y-Cable Protection

Client
14.9.2 Splitter Protection
Splitter protection, shown in
splitter 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.
Cisco ONS 15454 DWDM Installation and Operations Guide, R4.7
14-120
Y cables
TX
RX
Figure 14-69, is provided with TXPP and MXPP cards. To implement
Client
Port
"Working" card
(TXP or MXP)
"Protection" card
(TXP or MXP)
Client
Port
Chapter 14 Card Reference
Trunk
Port
Working
Trunk
Port
Protect
December 2004