User Manual, Part III 83
Subscriber access/aggregation node МA4000-РХ
25
PPPOE INTERMEDIATE AGENT CONFIGURATION
25.1
Introduction
This Chapter describes configuration of PPPoE Intermediate Agent of the access node.
PPPoE Intermediate Agent is used to provide BRAS with additional information about a received
PADI request. This may include information about the terminal running PPPoE Intermediate Agent as
well as information about
THE
ONT which sent the PADI request. PADI packets are modified by
interception and further processing in access node CPU.
BRAS analyses vendor specific tag and identifies the ONT. PPPoE Intermediate Agent forms or
rewrites a vendor specific tag using a specified format. Vendor specific tags are especially useful for a
network which has no private VLANs dedicated for each user.
PPPoE Intermediate Agent supports configurable formats for Circuit ID and Remote ID. The
suboptions format is configured with the help of the tokens listed in Table 20. The placeholders will be
replaced with corresponding values, while the rest of the words will be passed as is.
Table 20
—
Vendor Specific Tag Tokens
%HOSTNAME%
The access node network name
%SLOTID%
Slot number MA4000
%MNGIP%
The access node IP address
%CHANNELID%
ID of the OLT channel the PADI request arrived from
%ONTID%
ID of the ONT which sent the PADI request
%PONSERIAL%
Serial number of ONT that sent DHCP request
%GEMID%
ID of the GEM port where the PADI request arrived
%VLAN0%
External VID
%VLAN1%
Internal VID
%MAC%
MAC address of the ONT which sent the request
%DESCR%
First 20 symbols from ONT configuration description.
In addition to vendor specific tag support, PPPoE Intermediate Agent has some more functions
related to network security. It provides protection from DoS attacks by setting a threshold for intensity
of PADI messages which are received from ONT. Exceeding the threshold blocks PADI requests. The
blocking time can be configured.
PPPoE Intermediate Agent also limits the number of simultaneous PPPoE sessions. The restriction
can be set for both the total number of access node sessions and for every ONT separately.
25.2
PPPoE Intermediate Agent Profiles Configuration
To configure a PPPoE Intermediate Agent profile:
Step 1. Switch to the corresponding PPPoE Intermediate Agent profile.
ma4000# configure terminal
Summary of Contents for MA4000-PX
Page 9: ...User Manual Part I 9 МA4000 РХ Subscriber Access and Aggregation Point PART I GENERAL ...
Page 87: ...User Manual Part IV 87 Subscriber access aggregation node МA4000 РХ PART IV ONT CONFIGURATION ...
Page 163: ...User Manual Part VI 163 Subscriber access aggregation node МA4000 РХ PART VI MAINTENANCE ...
