Snmp Traps And System Log Messages; Snmp Traps - Juniper JUNOSE SOFTWARE 11.0.X - BROADBAND ACCESS CONFIGURATION GUIDE 4-1-2010 Configuration Manual

JUNOSe 11.0.x Broadband Access Configuration Guide

SNMP Traps and System Log Messages

The router can send Simple Network Management Protocol (SNMP) traps to alert
network managers when:
The router also generates system log messages when RADIUS servers fail to respond
or when they return to active service; no configuration is required for system log
messages.

SNMP Traps

The router generates SNMP traps and system log messages as follows:
If the E Series RADIUS client receives a RADIUS response from a "dead" RADIUS
server during the deadtime period, the RADIUS server is restored to active status.
If the router receives a valid RADIUS response to an outstanding RADIUS request,
the E Series client issues a system log message and, if configured, an SNMP trap
indicating that the RADIUS server is now available.
36
Configuring RADIUS Authentication and Accounting Servers
Use the no version to set the port number to the default value.
See udp-port
A RADIUS server fails to respond to a request.
A RADIUS server that previously failed to respond to a request (and was
consequently removed from the list of active servers) returns to active service.
Returning to active service means that the E Series RADIUS client receives a
valid response to an outstanding RADIUS request after the server is marked
unavailable.
All RADIUS servers within a VR context fail to respond to a request.
If the first RADIUS server fails to respond to the RADIUS request, the E Series
RADIUS client issues a system log message and, if configured, an SNMP trap
indicating that the RADIUS server timed out. The E Series RADIUS client will not
issue another system log message or SNMP trap regarding this RADIUS server
until the deadtime expires, if configured, or for 3 minutes if deadtime is not
configured.
The E Series RADIUS client then sends the RADIUS request to the second
configured RADIUS server. If the second RADIUS server fails to respond to the
RADIUS request, the E Series RADIUS client again issues a system log message
and, if configured, an SNMP trap indicating that the RADIUS server timed out.
This process continues until either the E Series RADIUS client receives a valid
response from a RADIUS server or the list of configured RADIUS servers is
exhausted. If the list of RADIUS servers is exhausted, the E Series RADIUS client
issues a system log message and, if configured, an SNMP trap indicating that all
RADIUS servers have timed out.