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ANCP DSL Attributes Mapped to Juniper Networks DSL Vendor-Specific Attributes

Digital Subscriber Line (DSL) attributes are RADIUS vendor-specific attributes (VSAs) that are defined by the DSL Forum in RFC 4679, DSL Forum Vendor-Specific RADIUS Attributes. The attributes transport DSL information that is not supported by standard RADIUS attributes and which conveys details about the associated DSL subscriber line and traffic. These attributes are contained as subattributes in the single DSL Forum VSA (IANA vendor ID 3561). An ANCP access node can provide this information to the router in a PPPoE PADI message during PPPoE subscriber discovery.

The access node can also report the same information about the DSL subscriber line and traffic information by means of the ANCP DSL TLVs or attributes carried in ANCP messages to the router. The ANCP attributes are defined in RFC 6320, Protocol for Access Node Control Mechanism in Broadband Networks. These ANCP DSL attributes correspond to Juniper Networks (IANA vendor ID 4874) DSL VSAs and to DSL Forum VSAs.

The router simply passes the DSL line and traffic information that it receives from the access node to the RADIUS server, without performing any parsing or manipulation. A RADIUS authentication or accounting message can contain any combination of the DSL Forum VSAs and the Juniper Networks DSL VSAs. You can configure the RADIUS access profile to exclude one or more individual attributes, or all DSL Forum attributes, from being included in RADIUS messages.

Table 1 shows the relationship between the ANCP DSL attributes, Juniper Networks DSL VSAs, and DSL Forum VSAs.

Table 1: Mapping ANCP DSL Attributes to Juniper Networks DSL VSAs and DSL Forum VSAs

ANCP DSL Attribute Name

Juniper Networks VSA Name [Number]

DSL Forum VSA Name [Number]

Access-Aggregation-Circuit-ID-ASCII

Acc-Aggr-Cir-Id-Asc [26–112]

Access-Loop-Encapsulation [26–144]

Access-Aggregation-Circuit-ID-Binary

Acc-Aggr-Cir-Id-Bin [26–111]

Agent-Remote-Id [26–2]

Access-Loop-Circuit-ID

Acc-Loop-Cir-Id [26–110]

Agent-Circuit-Id [26–1]

Actual-Interleaving-Delay-Downstream

Act-Interlv-Delay-Dn [26–126]

Actual-Interleaving-Delay-Downstream [26–142]

Actual-Interleaving-Delay-Upstream

Act-Interlv-Delay-Up [26–124]

Actual-Interleaving-Delay-Upstream [26–140]

Actual-Net-Data-Rate-Downstream

  • L2C-Down-Stream-Data [26–93]—Unadjusted rate
  • Act-Data-Rate-Dn [26–115]—Unadjusted rate
  • Downstream-Calculated-Qos-Rate [26–141]—Rate as adjusted by ANCP

Actual-Data-Rate-Downstream [26–130]

Actual-Net-Data-Rate-Upstream

  • L2C-Up-Stream-Data [26–92]—Unadjusted rate
  • Act-Data-Rate-Up [26–114]—Unadjusted rate
  • Upstream-Calculated-Qos-Rate [26–142]—Rate as adjusted by ANCP

Actual-Data-Rate-Upstream [26–129]

Attainable-Net-Data-Rate-Upstream

Att-Data-Rate-Up [26–117]

Attainable-Data-Rate-Upstream [26–133]

Attainable-Net-Data-Rate-Downstream

Att-Data-Rate-Dn [26–118]

Attainable-Data-Rate-Downstream [26–134]

DSL-Line-State

DSL-Line-State [26–127]

DSL-Type

DSL-Type [26–128]

Maximum-Net-Data-Rate-Downstream

Max-Data-Rate-Dn [26–120]

Maximum-Data-Rate-Downstream [26–136]

Maximum-Net-Data-Rate-Upstream

Max-Data-Rate-Up [26–119]

Maximum-Data-Rate-Upstream [26–135]

Maximum-Interleaving-Delay-Downstream

Max-Interlv-Delay-Dn [26–125]

Maximum-Interleaving-Delay-Downstream [26–141]

Maximum-Interleaving-Delay-Upstream

Max-Interlv-Delay-Up [26–123]

Maximum-Interleaving-Delay-Upstream [26–139]

Minimum-Net-Low-Power-Data-Rate-Downstream

Min-LP-Data-Rate-Dn [26–122]

Minimum-Data-Rate-Downstream-Low-Power [26–138]

Minimum-Net-Low-Power-Data-Rate-Upstream

Min-LP-Data-Rate-Up [26–121]

Minimum-Data-Rate-Upstream-Low-Power [26–137]

Minimum-Net-Data-Rate-Downstream

Min-Data-Rate-Dn [26–116]

Minimum-Data-Rate-Downstream [26–132]

Minimum-Net-Data-Rate-Upstream

Min-Data-Rate-Up [26–115]

Minimum-Data-Rate-Upstream [26–131]

Published: 2013-07-31