Web Management Guide-R02

Table Of Contents
Chapter 18
| IP Services
Configuring the PPPoE Intermediate Agent
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Vendor Tag Strip – Enables the stripping of vendor tags from PPPoE Discovery
packets sent from a PPPoE server. (Default: Disabled)
This parameter only applies to trusted interfaces. It is used to strip off vendor-
specific tags (which carry subscriber and line identification information) in
PPPoE Discovery packets received from an upstream PPPoE server before
forwarding them to a user.
Circuit ID – String identifying the circuit identifier (or interface) on this switch
to which the user is connected. (Range: 1-10 ASCII characters; Default: Unit/
Port:VLAN-ID, or 0/Trunk-ID:VLAN-ID)
The PPPoE server extracts the Line-ID tag from PPPoE discovery stage
messages, and uses the Circuit-ID field of that tag as a NAS-Port-ID attribute
in AAA access and accounting requests.
The switch intercepts PPPoE discovery frames from the client and inserts a
unique line identifier using the PPPoE Vendor-Specific tag (0x0105) to
PPPoE Active Discovery Initiation (PADI) and Request (PADR) packets. The
switch then forwards these packets to the PPPoE server. The tag contains
the Line-ID of the customer line over which the discovery packet was
received, entering the switch (or access node) where the intermediate
agent resides.
Outgoing PAD Offer (PADO) and Session-confirmation (PADS) packets sent
from the PPPoE Server include the Circuit-ID tag inserted by the switch, and
should be stripped out of PADO and PADS packets which are to be passed
directly to end-node clients.
Operation Circuit ID – The configured circuit identifier.
Remote ID – String identifying the remote identifier (or interface) on this
switch to which the user is connected. (Range: 1-63 ASCII characters; Default:
Port MAC address)
Operation Remote ID – The configured circuit identifier.
Remote ID Delimiter – Enables a user-specified delimiter for the remote ID.
Delimiter ASCII – A character used to separate components in the remote
circuit ID value. (Range: 0-255; Default: 35, ASCII character “#”)
Web Interface
To configure interface settings for PPPoE IA:
1. Click IP Service, PPPoE Intermediate Agent.
2. Select Configure Interface from the Step list.
3. Select Port or Trunk interface type.