Manual

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Москва, Новозаводская ул., 18, стр. 1
377
space symbol to compart, “eth” occupies 3 bytes and uses space symbol to compart, “Slot ID”
occupies 2 bytes, use “/” to compart and occupy 1 byte, “Port Index” occupies 3 bytes, use “:”
to compart and occupy 1 byte, “Vlan ID” occupies 4 bytes, all fields use ASCII, user can
configure ciucuit ID for each port according to requirement.
ANI
(n byte)
Space
( 1byte)
eth
(3 byte)
Space
(1 byte)
Slot ID
(2 byte)
/
(1byte)
Port Index
(3 byte)
:
(1 byte)
Vlan ID
(4 byte)
Agent Circuit ID value
MAC of the access switch is the default remote ID value of PPPoE IA. remote ID value can be
configured by user flexibly, the length is less than 63 bytes.
49.1.2.4 Trust Port of PPPoE Intermediate Agent
Discovery stage sends five kinds of packets, PADI and PADR packets sent by client to server,
PADO and PADS packets sent by server to client, PADT packet can be sent by server or client.
In PPPoE IA, for security and reduce traffic, set a port connected server as trust port, set ports
connected client as untrust port, trust port can receive all packets, untrust port can receive only
PADI, PADR and PADT packets which are sent to server. To ensure client operation is correct,
it must set the port connected server as trust port, each access device has a trust port at least.
PPPoE IA vendor tag can not exist in PPPoE packets sent by server to client, so we can strip
and forward these vendor tags if they exist in PPPoE packets. Strip function must be
configured on trust port, enabling strip function is not take effect on untrust port.
49.2 PPPoE Intermediate Agent Configuration Task List
1. Enable global PPPoE Intermediate Agent
2. Enable port PPPoE Intermediate Agent
Command
Explanation
Global Mode
pppoe intermediate-agent
no pppoe intermediate-agent
Enabel global PPPoE Intermediate Agent
function.
pppoe intermediate-agent type tr-101 circuit-
id access-node-id <string>
no pppoe intermediate-agent type tr-101
circuit-id access-node-id
Configure access node ID field value of
circuit ID in added vendor tag.
pppoe intermediate-agent type tr-101 circuit-
id identifier-string <string> option {sp | sv |
pv | spv} delimiter <WORD> [delimiter
<WORD> ]
Configure circuit-id in added vendor tag.