Specifications

2-11
Cisco ONS 15530 Planning Guide
OL-7708-01
Chapter 2 Protection Schemes and Network Topologies
Client Based Line Card Protection
Figure 2-7 Client Based Line Card Protection Scheme for ESCON Aggregation Cards and 10-Gbps ITU Trunk Cards
Considerations for Client Protection With 2.5-Gbps ITU Trunk Cards or 10-Gbps ITU Trunk Cards
The following considerations apply when using client protection:
• Due to their lower optical loss, we recommend using nonsplitter line cards for configurations with
client protection.
• Client protected configurations allow monitoring of the protection fiber without the OSC.
• Up to two channels can be client protected on a single shelf if the OSC is not supported; if the OSC
is supported, one channel can be client protected on a single shelf.
4-Port 1-Gbps/2-Gbps FC Aggregation Cards
Figure 2-8 shows an example configuration that supports client protection using 4-port 1-Gbps/2-Gbps
FC aggregation cards and 2.5-Gbps ITU trunk cards.
10-port ESCON cards
10-Gbps ITU trunk card
ITU trunk card
OADM
modules
West
East
10-Gbps ITU
transceiver
SRC
LRC
LRC
LRC
LRC
79310
Active signal
Optical fiber
connection
Electrical backplane
connection
Standby
switch fabric
connection
Redundant
CPU switch
modules
10-port ESCON cards
10-Gbps
ESCON
switch