User guide

2-11
Cisco Transport Manager Release 9.2 GateWay/CORBA User Guide and Programmer Manual
OL-20937-01
Chapter 2 NE- and CTM-Specific Details
2.1.7 ONS 15454 SDH
2.1.7.4 Topological Links
Topological links are unidirectional or bidirectional for ONS 15454 SDH NEs.
2.1.7.5 PTPs
All PTPs are bidirectional for the ONS 15454 SDH, except for PTPs on DWDM cards (optical
amplifiers, optical multiplexers, optical demultiplexers, and optical add/drop multiplexers). The ports
are always in channelized mode. PTPs support IN_SERVICE, OUT_OF_SERVICE,
OUT_OF_SERVICE_MAINTENANCE, and AUTO_IN_SERVICE values for the service state attribute.
2.1.7.6 CTPs
All CTPs are in channelized mode for the ONS 15454 SDH. Alarm monitoring cannot be turned on or
off for CTPs.
2.1.7.7 SNCs
One node supports a maximum of 192 bidirectional VC4 SNCs. The SNC name cannot exceed
48 characters. The NE enforces the SNC name character limit.
2.1.7.8 Equipment Protection
1:N equipment protection is supported for E1, E1-42, and DS3i cards. You must install protect cards
(E1-n, E1-42, DS3i-n) in slot 3 or slot 15 on the same side of the shelf as the protected cards. Protect
cards must match the cards they protect. For example, an E1-n card protects only E1 or E1-n cards. You
must create the protection group. Installing E1-n, E1-42, or DS3i-n cards in slot 3 or slot 15 does not
automatically protect other E1, E1-42, or DS3i cards. 1:N equipment protection is always revertive.
1:1 equipment protection is supported for E1, E1-42, E3, STM-1E-12, and DS3i cards. Install the protect
card in an odd-numbered slot and install the working card in an adjacent even-numbered slot. For
example, install the protect card in slot 1 and install the working card in slot 2.
2.1.7.9 Facility Protection
Facility protection is available for STM-n PTPs. Protect ports must match the working ports. For
example, port 1 of an STM-1 (OC-3) card is protected only by port 1 on another STM-1 (OC-3) card.
DSBLD (Disabled) The entity has been manually removed from service and cannot perform its provisioned
functions. All of its provisioned services are disrupted. Traffic is not carried.
LPBK (Loopback) The loopback command is in effect (any loopback type).
Table 2-9 Equipment Service State–Secondary (ONS 15454 SDH) (continued)
Secondary States (SST)
Attribute Value Meaning