Radius Dynamic-Request Server Platform Considerations; Radius Dynamic-Request Server References; Figure 5: Sample Remote Access Network Using Radius - Juniper JUNOSE SOFTWARE 11.0.X - BROADBAND ACCESS CONFIGURATION GUIDE 4-1-2010 Configuration Manual

JUNOSe 11.0.x Broadband Access Configuration Guide
For example, you might use the RADIUS dynamic-request server to terminate specific
user sessions. Without the RADIUS dynamic-request server, the only way to disconnect
a RADIUS user is from the E Series router. This disconnect method is cumbersome
when a network has many systems. The RADIUS dynamic-request server allows
RADIUS servers to initiate user-related operations, such as a termination operation,
by sending unsolicited request messages to an E Series router.
Figure 5 on page 236 shows a network that would benefit from the RADIUS
dynamic-request server functionality. In Figure 5 on page 236, instead of disconnecting
users on each E Series router, the RADIUS servers can initiate the disconnection.
Although the network has multiple RADIUS servers, the servers share a common
database that contains authorization and accounting information. Having a common
database allows any server to view who is currently valid and connected, and allows
service providers to manage the disconnection of users.

Figure 5: Sample Remote Access Network Using RADIUS

RADIUS Dynamic-Request Server Platform Considerations

RADIUS dynamic-request server is supported on all E Series routers. For information
about the modules supported on E Series routers:

RADIUS Dynamic-Request Server References

For more information about the RADIUS dynamic-request server feature, see the
following references:
236
RADIUS Dynamic-Request Server Platform Considerations
See the ERX Module Guide for modules supported on ERX7xx models, ERX14xx
models, and the ERX310 Broadband Services Router.
See the E120 and E320 Module Guide for modules supported on the E120 and
E320 Broadband Services Routers.
RFC 2865 Remote Authentication Dial In User Service (RADIUS) (June 2000)
RFC 2866 RADIUS Accounting (June 2000)