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3-2
Cisco ONS 15600 Reference Manual, R7.2
Chapter 3 Card Protection
3.1 Optical Port Protection
Note
Because there are no electrical cards in the ONS 15600, 1:1 or 1:N protection is not provided.
Figure 3-1 shows an example of the ONS 15600 in a maximum, 1+1 protected configuration.
Figure 3-1 ONS 15600 in a 1+1 Protected Configuration
Table 3-1 Port Protection Types
Type Ports Description
1+1 Any optical Pairs a working optical port with a protect optical port. Protect ports
must match the line rate of the working ports. For example, Port 1 of an
OC-48 card can only be protected by another OC-48 port. Ports do not
need to be in adjoining slots. For maximum protection, provision the
ports/cards in Slots 1 to 4 as working and the ports/cards in Slots 11 to
14 as protect.
Unprotected Any Unprotected ports can cause traffic loss if a port fails or incurs a signal
error. However, because no ports are reserved for protection,
unprotected schemes maximize the service available for use on the
ONS 15600.
Note
If you want to protect traffic you should implement either a path
protection or bidirectional line switched ring (BLSR) protection
scheme.
TSCWorking OC-N Protect OC-NSSXC SSXC TSC
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