User guide
2-6
Cisco Transport Manager Release 9.2 GateWay/CORBA User Guide and Programmer Manual
OL-20937-01
Chapter 2 NE- and CTM-Specific Details
2.1.5 ONS 15310 MA SONET
2.1.5 ONS 15310 MA SONET
See the Release Notes for Cisco Transport Manager Release 9.2 for the ONS 15310 MA SONET
software releases that CTM R9.2 supports.
2.1.5.1 Slots
The ONS 15310 MA SONET consists of two CTX slots and four EXP I/O slots.
2.1.5.2 Topological Links
All topological links are unidirectional or bidirectional for ONS 15310 MA SONET NEs.
2.1.5.3 CTX Cards
The CTX card is an electrical card that consists of 21 DS1 ports and three DS3/EC-1 ports. Two optical
interfaces are supported using SFP technology. OC-3/STM-1 and OC-12/STM-4 ports are available.
• DS1_28_DS3_EC1_3_LINE_CARD—The electrical ports consist of 28 DS1 and 3 DS3 or EC1
ports.
• DS1_84_DS3_EC1_3_LINE_CARD—The electrical ports consist of 84 DS1 and 3 DS3 or EC1
ports.
2.1.5.4 PTPs
All PTPs are bidirectional for the ONS 15310 MA SONET. The ports are always in channelized mode.
PTPs support In Service and Out of Service–Maintenance values for the service state attribute.
SNC provisioning on DS1_28_DS3_3 and DS1_84_DS3_3 cards uses the following DS3/EC1 ports:
• DS1_28_DS3_3—Port numbers 29, 30, and 31.
• DS1_84_DS3_3—Port numbers 85, 86, and 87.
2.1.5.5 CTPs
All CTPs are in channelized mode for the ONS 15310 MA SONET.
2.1.5.6 SNCs
CTX cards perform STS and VT1.5 switching. The SNC name cannot exceed 48 characters. The NE
enforces the SNC name character limit.
2.1.5.7 Auto Discovery
The ONS 15310 MA SONET supports automatic discovery of connected elements. CTM can connect to
one node and retrieve information about all connected nodes. The first time CTM connects to a node, it
retrieves only the IP address of the connected node; CTM does not retrieve the node name. However,
CTM must report this element to the users. Because the IP address is unique, CTM initializes the name
of the newly discovered element with the IP address. An object creation event is generated for this
managed element with the IP address as the name. Later, CTM connects to this element and retrieves all