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Cisco ONS 15454 SDH Procedure Guide, R4.6
January 2004
Chapter 4 Turn Up Node
NTP-D170 Create Protection Groups
Table 4-3 describes the protection types available on the ONS 15454 SDH.
Stop. You have completed this procedure.
Table 4-3 Card Protection Types
Type Cards Description and Installation Requirements
1:1 E1-N-14
DS3i-N-12
E3-12
STM1E
Pairs one working card with one protect card. The protect card
should be installed in an odd-numbered slot and the working card
in an even-numbered slot next to the protect slot towards the
TCC2, for example: protect in Slot 1, working in Slot 2; protect
in Slot 3, working in Slot 4; protect in Slot 15, working in Slot 14.
1:1 protection can be revertive or non-revertive. For more
information, see the Cisco ONS 15454 SDH Reference Manual.
1:N E1-N-14
E1-42N
DS3i-N-12
STM1E
1:N protection allows a single card to protect up to five (four for
the DS3i_N-12 card) working cards of the same electrical level.
A E1-N-14 card protects E1-N-14 cards and a DS3i-N-12 card
protects DS3i-N-12 cards.
1+1 Any STM-N Pairs a working STM-N card/port with a protect STM-N
card/port. For multiport STM-N cards, the protect port must
match the working port on the working card. For example, Port 1
of an STM-1 card can only be protected by Port 1 of another
STM-1 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 non-revertive, unidirectional or bidirectional.
Y Cable MXP_2.5_10G
TXP_MR_10G
TXP_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.
Splitter TXPP_MR_2.5G Splitter protection is automatically provided with the
TXPP_MR_2.5G card.
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 SDH. Unprotected is the default
protection type.