Cisco Cisco IOS Software Release 12.2(27)SBC
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PPPoE Circuit-Id Tag Processing
In an Ethernet access network, there is no unique mapping between the subscriber line identifier and the
interface such as there is on a virtual circuit (VC) in an ATM-based network. The PPPoE Circuit-Id Tag
Processing feature provides a way to extract a Circuit-Id tag from the digital subscriber line (DSL) as an
identifier for the authentication, authorization, and accounting (AAA) access request on an Ethernet
interface, thereby simulating ATM-based broadband access, but using cost-effective Ethernet instead.
The tag is useful for troubleshooting the network, and is also used in RADIUS authentication and
accounting processes.
interface such as there is on a virtual circuit (VC) in an ATM-based network. The PPPoE Circuit-Id Tag
Processing feature provides a way to extract a Circuit-Id tag from the digital subscriber line (DSL) as an
identifier for the authentication, authorization, and accounting (AAA) access request on an Ethernet
interface, thereby simulating ATM-based broadband access, but using cost-effective Ethernet instead.
The tag is useful for troubleshooting the network, and is also used in RADIUS authentication and
accounting processes.
Configuration Information
Configuration information is included in the “How to Configure PPPoE Circuit Id tag Processing” part of the “PPPoA, PPPoE, PPPoX” module of the
Cisco IOS Broadband and DSL Configuration Guide,
Release 12.4, at the following URL:
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http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/hbba_c/part02/index.htm
Command Reference Information
This section documents modified commands.
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vendor-tag circuit-id service
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vendor-tag circuit-id strip