ZyXEL MES3500-24F User Guide - Page 250

Port State

Page 250 highlights

Chapter 31 PPPoE Table 95 PPPoE IA Remote ID Sub-option Format SubOpt 0x02 (1 byte) Length N (1 byte) MAC Address or String (63 bytes) Value 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. 31.1.2.1 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 Suboption 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 96 PPPoE IA Circuit ID Sub-option Format: Using Identifier String and Variables SubOpt 0x01 (1 byte) Length N (1 byte) Identifier String (53 byte) delimiter (1 byte) Slot ID (1 byte) Value delimiter (1 byte) Port No (2 byte) delimiter (1 byte) VLAN ID (4 bytes) 31.1.2.2 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 97 PPPoE IA Circuit ID Sub-option Format: Defined in WT-101 SubOpt 0x01 (1 byte) Length N (1 byte) Access Node Identifier (20 byte) Space eth (1 (3 byte) byte) Value Space (1 byte) Slot ID (1 byte) / (1 byte) Port No (2 byte) : (1 byte) VLAN ID (4 bytes) 31.1.3 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. 250 MES3500-24/24F User's Guide

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Chapter 31 PPPoE
MES3500-24/24F User’s Guide
250
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.
31.1.2.1
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.
31.1.2.2
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”.
31.1.3
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.
Table 95
PPPoE IA Remote ID Sub-option Format
SubOpt
Length
Value
0x02
(1 byte)
N
(1 byte)
MAC Address or String
(63 bytes)
Table 96
PPPoE IA Circuit ID Sub-option Format: Using Identifier String and Variables
SubOpt
Length
Value
0x01
(1 byte)
N
(1 byte)
Identifier
String
(53 byte)
delimiter
(1 byte)
Slot ID
(1 byte)
delimiter
(1 byte)
Port No
(2 byte)
delimiter
(1 byte)
VLAN ID
(4 bytes)
Table 97
PPPoE IA Circuit ID Sub-option Format: Defined in WT-101
SubOpt
Length
Value
0x01
(1 byte)
N
(1 byte)
Access
Node
Identifier
(20 byte)
Space
(1
byte)
eth
(3
byte)
Space
(1
byte)
Slot
ID
(1
byte)
/
(1
byte)
Port No
(2
byte)
:
(1
byte)
VLAN
ID
(4
bytes)