ZyXEL Communications 4728F User Manual

 Chapter 31 PPPoE

XGS-4526/4528F/4728F User’s Guide

The following table describes the labels in this screen. 

Use this screen to specify whether individual ports are trusted or untrusted ports 
and have the Switch add extra information to PPPoE discovery packets from PPPoE 
clients on a per-port basis.

Table 100   Advanced Application > PPPoE > Intermediate Agent

Active

Select this option to enable the PPPoE intermediate agent globally on the 
Switch.

access-node-
identifier

Enter up to 20 ASCII characters to identify the PPPoE intermediate agent. 
Hyphens (-) and spaces are also allowed. The default is the Switch’s host 
name. 

circuit-id

Use this section to configure the Circuit ID field in the PADI and PADR 
packets. 

The Circuit ID you configure for a specific port or for a specific VLAN on a 
port has priority over this.

The Circuit ID you configure for a specific port (in the Advanced 
Application > PPPoE > Intermediate Agent > Port screen) or for a 
specific VLAN on a port (in the Advanced Application > PPPoE > 
Intermediate Agent > Port > VLAN screen) has priority over this. That 
means, if you also want to configure PPPoE IA Per-Port or Per-Port Per-
VLAN setting, leave the fields here empty and configure circuit-id and 
remote-id in the Per-Port or Per-Port Per-VLAN screen.

Active 

Select this option to have the Switch add the user-defined identifier string 
and variables (specified in the option field) to PADI or PADR packets from 
PPPoE clients.

If you leave this option unselected and do not configure any Circuit ID 
string (using CLI commands) on the Switch, the Switch will use the string 
specified in the access-node-identifier field. 

identifier-

string 

Specify a string that the Switch adds in the Agent Circuit ID sub-option. 
You can enter up to 53 ASCII characters. Spaces are allowed.

option

Select the variables that you want the Switch to generate and add in the 
Agent Circuit ID sub-option. The variable options include sp, sv, pv and 
spv which indicate combinations of slot-port, slot-VLAN, port-VLAN and 
slot-port-VLAN respectively. The Switch enters a zero into the PADI and 
PADR packets for the slot value.

delimiter

Select a delimiter to separate the identifier-string, slot ID, port number 
and/or VLAN ID from each other. You can use a pound key (#), semi-
colon (;), period (.), comma (,), forward slash (/) or space.

Apply

Click Apply to save your changes to the Switch’s run-time memory. The 
Switch loses these changes if it is turned off or loses power, so use the 
Save link on the top navigation panel to save your changes to the non-
volatile memory when you are done configuring.

Cancel

Click Cancel to begin configuring this screen afresh.