Tripp Lite NGI-M08C4POE8-2 Owner's Manual page 189

of the PPPoE client and/or the VLAN ID on the PPPoE packet.
Table 4PPPoE IA System Variable
SYSTEM VARIABLE
%HOSTNAME
%SPACE
%PORT
%SVLAN
%CVLAN
PS. %SVLAN equal to %CVLAN
Users can freely combined circuit ID, using the '+' symbol to links system variables and identifier
strings, in order to meet specific requirements.
EX: CLI Command
pppoe intermediate-agent format-type user-defined
%HOSTNAME+%SPACE+atm+%SPACE+/0/0/+%PORT+:+%CVLAN
Table 5: PPPoE IA Circuit ID Sub-option Format: User-defined String and Variables
SubOpt Length
0x01 N Host Name
(1 byte) (1 byte) (x bytes)
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 no set the flexible Circuit ID syntax in the Switch, 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 hostname of the PPPoE
intermediate agent and the eth indicates "Ethernet", and the slot id is 0.
SubOpt Length
0x01 N
Access node
(1 byte) (1 byte) identifier
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. Youcan also specify
the agent sub-options (circuit ID and remote ID) that the Switch adds to PADI andPADR 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.
DESCRIPTION
Host name of access node(Switch)
Space key(ASCII 0x20)
Port number of the client
Service provider VLAN ID
Client VLAN ID
Value
Space atm Space
(1 byte) (3 bytes) (1 byte)
Value
Space eth Space
(1 byte) (3 bytes) (1 byte)
189
/0/0/ Port ID
(5 bytes) (2 bytes)
Slot ID / Port ID
(1 byte) (1 byte) (2 bytes)
: CVLAN ID
(1 byte) (4 bytes)
: CVLAN ID
(1 byte) (4 bytes)
Port