Chapter 8
| Authentication Commands
PPPoE Intermediate Agent
– 305 –
pppoe
intermediate-agent
port-format-type
This command sets the circuit-id or remote-id for an interface. Use the no form to
restore the default settings.
Syntax
pppoe intermediate-agent port-format-type {circuit-id circuit-id-string |
remote-id remote-id-string}
no pppoe intermediate-agent port-format-type {circuit-id | remote-id}
circuit-id-string - String identifying the circuit identifier (or interface) on this
switch to which the user is connected. (Range: 1-10 ASCII characters)
remote-id-string - String identifying the remote identifier (or interface) on
this switch to which the user is connected. (Range: 1-63 ASCII characters)
Default Setting
circuit-id: unit/port:vlan-id or 0/trunk-id:vlan-id
remote-id: port MAC address
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
â—† 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.
â—† 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.
â—† 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.
â—† If the remote-id is unspecified, the port name will be used for this parameter. If
the port name is not configured, the remote-id is set to the port MAC (yy-yy-yy-
yy-yy-yy#), where # is the default delimiter.
Example
Console(config)#interface ethernet 1/5
Console(config-if)#pppoe intermediate-agent port-format-type circuit-id
ECS4620-28T
Console(config-if)#
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