Configuring The Pppoe Intermediate Agent - Cisco Catalyst 4500 Series Software Configuration Manual

Configuring the PPPoE Intermediate Agent

DSL Forum TR-101 [1] offers a means by which the PPPoE Discovery packets are tagged at the service
provider's access switch with subscriber line specific information. The mechanism specifies using VSA
of the PPPoE Discovery packets to add the line specific information at the switch. Even though you can
perform Subscriber Line Identification (SLI) in another way (recreating virtual paths and circuits using
stacked VLAN tags), DSL Forum 2004-071 [4] recommends the PPPoE Intermediate Agent mechanism.
It cites lower provisioning costs and simpler co-ordination between OSS systems in charge of access
switch and BRAS. PPPoE Intermediate Agent helps the service provider, BRAS, distinguish between
end hosts connected over Ethernet to an access switch.
This chapter describes PPPoE Intermediate Agent on Catalyst 4500 series switches. It includes the
following sections:
About PPPoE Intermediate Agent, page 51-2
•
Enabling PPPoE IA on a Switch, page 51-2
•
Configuring the Access Node Identifier for PPPoE IA on a Switch, page 51-2
•
Configuring the Identifier String, Option, and Delimiter for PPPoE IA on an Switch, page 51-3
•
Configuring the Generic Error Message for PPPoE IA on an Switch, page 51-3
•
Enabling PPPoE IA on an Interface, page 51-4
•
Configuring the PPPoE IA Trust Setting on an Interface, page 51-4
•
• Configuring PPPoE IA Rate Limiting Setting on an Interface, page 51-4
• Configuring PPPoE IA Vendor-tag Stripping on an Interface, page 51-5
• Configuring PPPoE IA Circuit-ID and Remote-ID on an Interface, page 51-5
Enabling PPPoE IA for a Specific VLAN on an Interface, page 51-5
•
Configuring PPPoE IA Circuit-ID and Remote-ID for a VLAN on an Interface, page 51-6
•
For complete syntax and usage information for the switch commands used in this chapter, see the
Note
Cisco IOS Command Reference Guides for the Catalyst 4500 Series
If a command is not in the Cisco Catalyst 4500 Series Switch Command Reference , you can locate it in
the Cisco IOS Master Command List, All
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
C H A P T E R
Releases.
51
Switch.
51-1