LevelOne GTL-2691 - Manual (Page 916)

C HAPTER 28 | Authentication Commands
PPPoE Intermediate Agent
– 916 –
◆ 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 using the pppoe
intermediate-agent vendor-tag strip command.
E XAMPLE
Console(config)#interface ethernet 1/5
Console(config-if)#pppoe intermediate-agent port-format-type circuit-id
GTL-2691
Console(config-if)#
pppoe intermediate-
agent trust
This command sets an interface to trusted mode to indicate that it is
connected to a PPPoE server. Use the no form to set an interface to
untrusted mode.
S YNTAX
[no] pppoe intermediate-agent trust
D EFAULT S ETTING
Untrusted
C OMMAND M ODE
Interface Configuration (Ethernet, Port Channel)
C OMMAND U SAGE
◆ 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.
E XAMPLE
Console(config)#interface ethernet 1/5
Console(config-if)#pppoe intermediate-agent trust
Console(config-if)#