Pppoe Screen - ZyXEL Communications GS2210 Series User Manual

defined in the DSL Forum Working Text (WT)-101. The default access node identifier is the host
name of the PPPoE intermediate agent and the eth indicates "Ethernet".
Table 124 PPPoE IA Circuit ID Sub-option Format: Defined in WT-101
SubOpt Length
0x01 N
(1 byte) (1
byte)
29.1.2.3 Port State
Every port is either a trusted port or an untrusted port for the PPPoE intermediate agent. This
setting is independent of the trusted/untrusted setting for DHCP snooping or ARP inspection. You
can also specify the agent sub-options (circuit ID and remote ID) that the Switch adds to PADI and
PADR packets from PPPoE clients.
Trusted ports are connected to PPPoE servers.
• If a PADO (PPPoE Active Discovery Offer), PADS (PPPoE Active Discovery Session-confirmation),
or PADT (PPPoE Active Discovery Terminate) packet is sent from a PPPoE server and received on
a trusted port, the Switch forwards it to all other ports.
• If a PADI or PADR packet is sent from a PPPoE client but received on a trusted port, the Switch
forwards it to other trusted port(s).
Note: The Switch will drop all PPPoE discovery packets if you enable the PPPoE
intermediate agent and there are no trusted ports.
Untrusted ports are connected to subscribers.
• If a PADI, PADR, or PADT packet is sent from a PPPoE client and received on an untrusted port,
the Switch adds a vendor-specific tag to the packet and then forwards it to the trusted port(s).
• The Switch discards PADO and PADS packets which are sent from a PPPoE server but received on
an untrusted port.

29.2 PPPoE Screen

Use this screen to configure the PPPoE Intermediate Agent on the Switch.
Click Advanced Application > PPPoE in the navigation panel to display the screen as shown.
Click Click Here to go to the Intermediate Agent screen.
Figure 186 Advanced Application > PPPoE Intermediate Agent
Chapter 29 PPPoE
Access Space eth
Node
(1 (3
Identifier
byte) byte)
(20 byte)
GS2210 Series User's Guide
267
Value
Space Slot / Port No
ID
(1 (1 (2
byte) (1 byte) byte)
byte)
: VLAN
ID
(1
byte) (4
bytes)