4-11
Cisco ONS 15454 Procedure Guide, R5.0
December 2004
Chapter 4 Turn Up Node
NTP-A170 Create Protection Groups
Stop. You have completed this procedure.
1+1 Any OC-N Pairs a working OC-N card/port with a protect OC-N card/port.
For multiport OC-N cards, the protect port must match the
working port on the working card. For example, Port 1 of an
OC-3 card can only be protected by Port 1 of another OC-3 card.
The ports on multiport cards must be either working or protect.
You cannot mix working and protect ports on the same card.
Cards do not need to be in adjoining slots. 1+1 protection can be
revertive or nonrevertive, bidirectional or unidirectional.
Optimized 1+1 OC-3-4
OC-3-8
Ports must be provisioned to SDH. Optimized 1+1 protection is
mainly used in networks that have linear 1+1 bidirectional
protection schemes. Optimized 1+1 is a line-level protection
scheme that includes two lines, working and protect. One of the
two lines assumes the role of the primary channel, from which
traffic gets selected, and the other port assumes the role of
secondary channel and protects the primary channel. Traffic
switches from the primary to the secondary channel based on
either an external switching command or line conditions. After
the line condition or the external switching command
responsible for a switch clears, the roles of the two sides are
reversed.
Y Cable MXP_2.5_10G
MXP_2.5_10E
TXP_MR_10G
TXP_MR_10E
MXP_2.5G_10E
MXP_MR_2.5G
Pairs a working transponder or muxponder card/port with a
protect transponder or muxponder card/port. The protect port
must be on a different card than the working port and it must be
the same card type as the working port. The working and protect
port numbers must be the same, that is, Port 1 can only protect
Port 1, Port 2 can only protect Port 2, etc. For more information,
see the Cisco ONS 15454 DWDM Installation and Operations
Guide.
Splitter TXPP_MR_2.5G
MXPP_MR_2.5G
Splitter protection is automatically provided with the
TXPP_MR_2.5G and MXPP_MR_2.5G cards. For more
information, see the Cisco ONS 15454 DWDM Installation and
Operations Guide.
Unprotected Any Unprotected cards can cause signal loss if a card fails or incurs
a signal error. However, because no card slots are reserved for
protection, unprotected schemes maximize the service available
for use on the ONS 15454. Unprotected is the default protection
type.
Table 4-1 Protection Types (continued)
Type Cards Description and Installation Requirements
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