Configuring Pppoe Ia Interface Settings - Edge-Core ECS4620-28T Quick Start Manual

Configuring PPPoE IA
Interface Settings
Use the IP Service > PPPoE Intermediate Agent (Configure Interface) page to enable
PPPoE IA on an interface, set trust status, enable vendor tag stripping, and set the
circuit ID and remote ID.
Parameters
These parameters are displayed:
◆
Interface – Port or trunk selection.
◆
PPPoE IA Status – Enables the PPPoE IA on an interface. (Default: Disabled)
Note that PPPoE IA must also be enabled globally on the switch for this
command to take effect.
◆
Trust Status – Sets an interface to trusted mode to indicate that it is connected
to a PPPoE server. (Default: Disabled)
Set any interfaces connecting the switch to a PPPoE Server as trusted.
■
Interfaces that connect the switch to users (PPPoE clients) should be set as
untrusted.
At least one trusted interface must be configured on the switch for the
■
PPPoE IA to function.
◆
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.
◆
Operational Circuit ID – The configured circuit identifier.
Configuring the PPPoE Intermediate Agent
– 665 –
Chapter 16
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