Port State - ZyXEL Communications XS3800-28 User Manual

Table 150 PPPoE IA Remote ID Sub-option Format
SubOpt
0x02
(1 byte)
The 1 in the first field identifies this as an Agent Circuit ID sub-option and 2 identifies this as an Agent
Remote ID sub-option. The next field specifies the length of the field. The Switch takes the Circuit ID string
you manually configure for a VLAN on a port as the highest priority and the Circuit ID string for a port as
the second priority. In addition, the Switch puts the PPPoE client's MAC address into the Agent Remote
ID Sub-option if you do not specify any user-defined string.
32.1.2.1 Flexible Circuit ID Syntax with Identifier String and Variables
If you do not configure a Circuit ID string for a VLAN on a specific port or for a specific port, the Switch
adds the user-defined identifier string and variables into the Agent Circuit ID Sub-option. The variables
can be the slot ID of the PPPoE client, the port number of the PPPoE client and/or the VLAN ID on the
PPPoE packet.
The identifier-string, slot ID, port number and VLAN ID are separated from each other by a pound key
(#), semi-colon (;), period (.), comma (,), forward slash (/) or space. An Agent Circuit ID Sub-option
example is "Switch/07/0123" and indicates the PPPoE packets come from a PPPoE client which is
connected to the Switch's port 7 and belong to VLAN 123.
Table 151 PPPoE IA Circuit ID Sub-option Format: Using Identifier String and Variables
SubOpt
0x01
(1 byte)
32.1.2.2 WT-101 Default Circuit ID Syntax
If you do not configure a Circuit ID string for a specific VLAN on a port or for a specific port, and disable
the flexible Circuit ID syntax in the PPPoE > Intermediate Agent screen, the Switch automatically
generates a Circuit ID string according to the default Circuit ID syntax which is 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 152 PPPoE IA Circuit ID Sub-option Format: Defined in WT-101
SubOpt
0x01
(1 byte)

32.1.3 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.
Chapter 32 PPPoE
Length
N MAC Address or String
(1 byte) (63 bytes)
Length
N Identifier
String
(1 byte)
(53 byte)
Length
N Access
Node
(1 byte)
Identifier
(20 byte)
XS3800-28 User's Guide
Value
Value
delimiter Slot ID delimiter
(1 byte) (1 byte) (1 byte)
Value
Space eth Space Slot ID
(1 (3 (1 (1
byte) byte) byte) byte)
345
Port No delimiter VLAN ID
(2 byte) (1 byte) (4 bytes)
/ Port No :
(1 (2 byte) (1
byte) byte)
VLAN ID
(4 bytes)