Table Of Contents

Digital Subscriber Line (DSL)

Technology Description

xDSL

Inventory and Information Model Objects (IMOs)

Digital Subscriber Line Interface

Asynchronous Digital Subscriber Line Interface

Asynchronous Digital Subscriber Line 2 Interface

DSL Traffic Descriptor

Asynchronous DSL Traffic Descriptor

Asynchronous DSL 2 Spectrum Traffic Descriptor

Synchronous DSL Traffic Descriptor

Synchronous High Bit Rate DSL Traffic Descriptor

Vendor-Specific Inventory and Information Model Objects

ECI's HiFocus ADSL Traffic Descriptor

Alcatel's ASAM SHDSL Traffic Descriptor

Network Topology

Service Alarms

Digital Subscriber Line (DSL)

---

This chapter describes the level of support that Cisco ANA provides for DSL, as follows:

•Technology Description

•Inventory and Information Model Objects (IMOs)

•Vendor-Specific Inventory and Information Model Objects

•Network Topology

•Service Alarms

Technology Description

xDSL

Digital Subscriber Line (DSL) is a modem technology that uses existing twisted-pair telephone lines to transport high-bandwidth data, such as multimedia and video, to service subscribers. The term xDSL covers a number of similar yet competing forms of DSL, including Asymmetric DSL (ADSL/ADSL2), Symmetric DSL (SDSL), High Speed DSL (HDSL), Rate Adaptive DSL (RADSL), and Very High Bit Data Rate DSL (VDSL) for delivering up to 52 Mbps downstream.

At the customer end of the connection, a DSL modem converts data from the digital signals used by computers into a voltage signal of a suitable frequency range, which is then applied to the phone line. At the exchange end, a Digital Subscriber Line Access Multiplexer (DSLAM) terminates the DSL circuits, aggregates them, and hands them off onto other networking transports. In the case of ADSL, the voice component is also separated at this step, either by a filter integrated into the DSLAM or by specialized filtering equipment installed before it.

Inventory and Information Model Objects (IMOs)

This section describes the following IMOs:

•Digital Subscriber Line Interface (IDsl/IIdsl/ISdsl/IShdsl)

•Asynchronous Digital Subscriber Line Interface (IADsl)

•Asynchronous Digital Subscriber Line 2 Interface (IADsl2)

•DSL Traffic Descriptor (IIdslTrafficDescriptor)

•Asynchronous DSL Traffic Descriptor (IAdslTrafficDescriptor)

•Asynchronous DSL 2 Spectrum Traffic Descriptor (IAdsl2TrafficDescriptor)

•Synchronous DSL Traffic Descriptor (ISdslTrafficDescriptor)

•Synchronous High Bit Rate DSL Traffic Descriptor (IShdslTrafficDescriptor)

Digital Subscriber Line Interface

The following Physical layer Digital Subscriber Line Interface, which represents any DSL interface, as well as Asynchronous Digital Subscriber Line Interface and Asynchronous Digital Subscriber Line 2 Interface objects, is bound by its Containing Termination Points attribute to a Port Connector object. It is accessed primarily by a Data Link Layer ATM Interface bound by its Contained Connection Termination Points attribute.

Table 9-1 Digital Subscriber Line Interface (IDsl/IIdsl/ISdsl/IShdsl) 

Attribute Name	Attribute Description	Scheme	Polling Interval
Modulation Type	Modulation type (Null, DMT, CAP, QAM, GLite, GDMT, 2B1Q)	Product	Configuration
Customer Identification	Customer identification	Product	Configuration
Traffic Descriptor	Traffic descriptor (DSL Traffic Descriptor)	Product	Configuration
Same as Physical Layer (IPhysicalLayer)

Asynchronous Digital Subscriber Line Interface

Table 9-2 Asynchronous Digital Subscriber Line Interface (IADsl)

Attribute Name	Attribute Description	Scheme	Polling Interval
Maximum Reception and Transmission Bandwidth	Maximum reception and transmission bandwidth	Product	Configuration
Same as Digital Subscriber Line Interface (IDsl)

Asynchronous Digital Subscriber Line 2 Interface

Table 9-3 Asynchronous Digital Subscriber Line 2 Interface (IADsl2)

Attribute Name	Attribute Description	Scheme	Polling Interval
Spectrum Traffic Descriptor	Spectrum traffic descriptor (Asynchronous DSL 2 Spectrum Traffic Descriptor)	Product	Configuration
Traffic Descriptor	Traffic descriptor (Asynchronous DSL Traffic Descriptor)	Product	Configuration
Same as Asynchronous Digital Subscriber Line Interface (IADsl)

DSL Traffic Descriptor

The following DSL Traffic Descriptor objects describe the traffic of various standard DSL Interfaces. They are aggregated by a Traffic Descriptor Container object (see Common Components).

Table 9-4 DSL Traffic Descriptor (IIdslTrafficDescriptor)

Attribute Name	Attribute Description	Scheme	Polling Interval
Target Bit Rate	Target Bit rate	Product	Configuration
Name	Traffic descriptor name	Product	Configuration
Index	Traffic descriptor index	Product	Configuration

Asynchronous DSL Traffic Descriptor

Table 9-5 Asynchronous DSL Traffic Descriptor (IAdslTrafficDescriptor) 

Attribute Name	Attribute Description	Scheme	Polling Interval
Maximum, Minimum and Target Transmission and Reception Noise Margins	Maximum, minimum and target transmission and reception noise margins	Product	Configuration
Maximum, Minimum and Planned Transmission and Reception Bit Rates	Maximum, minimum and planned transmission and reception bit rates	Product	Configuration
Maximum Transmission Power Spectral Density	Maximum transmission Power Spectral Density (PSD)	Product	Configuration
Transmission and Reception Rate Adaptation	Transmission and reception rate adaptation mode (Null, Fixed, Adapt at Startup, Adapt at Runtime)	Product	Configuration
Channel Type	ADSL channel type (Null, Fast, Interleaved, Fast or Interleaved, Fast and Interleaved)	Product	Configuration
Name	Traffic descriptor name	Product	Configuration
Index	Traffic descriptor index	Product	Configuration

Asynchronous DSL 2 Spectrum Traffic Descriptor

Table 9-6 Asynchronous DSL 2 Spectrum Traffic Descriptor (IAdsl2TrafficDescriptor)

Attribute Name	Attribute Description	Scheme	Polling Interval
Maximum, Minimum and Target Transmission and Reception Noise Margins	Maximum, minimum and target transmission and reception noise margins	Product	Configuration
Name	Traffic descriptor name	Product	Configuration
Index	Traffic descriptor index	Product	Configuration

Synchronous DSL Traffic Descriptor

Table 9-7 Synchronous DSL Traffic Descriptor (ISdslTrafficDescriptor)

Attribute Name	Attribute Description	Scheme	Polling Interval
Target and Minimum Bit Rate	Target and minimum line Bit rate	Product	Configuration
Target Noise Margin	Target noise margin	Product	Configuration
Name	Traffic descriptor name	Product	Configuration
Index	Traffic descriptor index	Product	Configuration

Synchronous High Bit Rate DSL Traffic Descriptor

Table 9-8 Synchronous High Bit Rate DSL Traffic Descriptor (IShdslTrafficDescriptor) 

Attribute Name	Attribute Description	Scheme	Polling Interval
Target Bit Rate	Target line Bit rate	Product	Configuration
Wire Mode	Wire mode (Null, Two Wire, Four Wire)	Product	Configuration
Spectral Mode	Spectral mode (Null, Symmetric, Asymmetric)	Product	Configuration
Name	Traffic descriptor name	Product	Configuration
Index	Traffic descriptor index	Product	Configuration

Vendor-Specific Inventory and Information Model Objects

Vendor-specific Information Model Objects are implemented only for specific devices of the vendor.

The following vendors' DSL Traffic Descriptor objects describe traffic of these vendors' standard DSL interfaces, and are aggregated by a Traffic Descriptor Container object.

•ECI's HiFocus ADSL Traffic Descriptor (IECIHiFocusAdslTrafficDescriptor)

•Alcatel's ASAM SHDSL Traffic Descriptor (IAlcatelAsamShdslTrafficProfile)

ECI's HiFocus ADSL Traffic Descriptor

Table 9-9 ECI's HiFocus ADSL Traffic Descriptor (IECIHiFocusAdslTrafficDescriptor)

Attribute Name	Attribute Description	Scheme	Polling Interval
Discrete Multi-Tone Coding Model	Discrete multi-tone coding model (Null, discrtMultiTone)	Product	Configuration
ATUC Downstream and ATUR Upstream Usage	ATUC downstream and ATUR upstream usage (Null, Yes, No)	Product	Configuration
ATUC Downstream Fast and Interleave Check Bytes	ATUC downstream fast and interleave check bytes	Product	Configuration
ATUR Upstream Fast and Interleave Check Bytes	ATUR upstream fast and interleave check bytes	Product	Configuration
ATUC Downstream and ATUR Upstream Interleaved Depth	ATUC downstream and ATUR interleaved depth (Power of 2, 0, Non)	Product	Configuration
ATUC Downstream and ATUR Upstream Code Word Length	ATUC downstream and ATUR upstream code word length in symbols per code word	Product	Configuration
Trellis Coded Modulation Option Usage	Trellis coded modulation option usage (Null, Enabled, Disabled)	Product	Configuration
Echo Cancellation Option	Echo cancellation option (Null, Enabled, Disabled)	Product	Configuration
Coding Mode	Coding mode (Null, Automatic, Manual)	Product	Configuration
Same as Asynchronous DSL Traffic Descriptor (IAdslTrafficDescriptor) - see Table 9-5.

Alcatel's ASAM SHDSL Traffic Descriptor

Table 9-10 Alcatel's ASAM SHDSL Traffic Descriptor (IAlcatelAsamShdslTrafficProfile)

Attribute Name	Attribute Description	Scheme	Polling Interval
Minimum and Maximum Required Bit Rate	Minimum and maximum required Bit rate	Product	Configuration
Same as Synchronous High Bit Rate DSL Traffic Descriptor (IShdslTrafficDescriptor) - see Table 9-8.

Network Topology

Cisco ANA does not support discovery of Digital Subscriber Line (DSL) Physical layer topology. This topology is manually (statically) configured by the system administrator.

Service Alarms

The following alarms are supported for this technology:

•Link Down/Link Up

•Port Down/Port Up

For detailed information about alarms and correlation, see the Cisco Active Network Abstraction 3.6.5 User Guide.