Juniper JUNOSE SOFTWARE 11.2.X - LINK LAYER CONFIGURATION GUIDE 7-7-2010 Configuration Manual page 418

JunosE 11.2.x Link Layer Configuration Guide
386
The following rules apply if you configure the router to override the current PPPoE
maximum session value for the interface with the PPPoE maximum session value
returned by RADIUS in the Max-Clients-Per-Interface VSA:
If the current PPPoE maximum session value is less than the PPPoE maximum session
value returned by RADIUS, the PPPoE application overrides the current maximum
session value with the value returned by RADIUS and proceeds with creation of the
PPPoE interface.
If the current number of active PPPoE sessions, including the current session, is
greater than the PPPoE maximum session value returned by RADIUS, PPPoE ignores
(drops) the new session.
If the current number of active PPPoE sessions is less than or equal to the PPPoE
maximum session value returned by RADIUS, PPPoE proceeds with creation of the
PPPoE interface.
The following table shows examples of the PPPoE maximum session value when a
new subscriber logs in, and indicates the status of the current session.
PPPoE Current
Maximum PPPoE
Session Maximum
Value from Session
RADIUS Value
10 5
3 5
5 5
Example
host1(config-if)#pppoe max-session-vsa override
Use the no version to restore the default behavior, ignore.
See pppoe max-session-vsa.
Figure 38 on page 387 illustrates the interface stack for this configuration.
Existing New PPPoE
Number of Maximum
PPPoE Session
Sessions Value
4 10
4 3
4 5
Copyright © 2010, Juniper Networks, Inc.
New
Number of
PPPoE Status of
Sessions Session
5 PPP session
up
5 PPP/PPPoE
session down
5 PPP session
up