1. MIB Guide
  2. SNMP-based Application Features
  3. FQDN-resolved Session Agent Statistics SNMP Retrieval

FQDN-resolved Session Agent Statistics SNMP Retrieval

When FQDN-resolved Session Agent Statistics are enabled, you can retrieve each IP target's session agent statistics via SNMP.

The apSipAgentTable returns a list of configured sessions agent with an index corresponding and configuration name. The mapping of index to configuration name is persistent across system reboot.

The index of the additional entries that correspond to the individual IP targets are identified by starting at 10000000. Because the IP targets that are retrieved from the DNS server may change on any DNS query, they are not persistent across a reboot. An snmpwalk query on asSIPAgentTable appears as:

SNMPv2-SMI::enterprises.9148.3.15.1.2.3.1.2.36 = STRING: "sa1.dg.com"
SNMPv2-SMI::enterprises.9148.3.15.1.2.3.1.210000000 = STRING: "sa1.dg.com#192.168.26.2"
SNMPv2-SMI::enterprises.9148.3.15.1.2.3.1.210000001 = STRING: "sa1.dg.com#192.168.26.3"

The following snmpwalk query on asSipSessionAgentStatsTable appears as:

SNMPv2-SMI::enterprises.9148.3.2.1.2.2.1.1.36 = INTEGER: 36
SNMPv2-SMI::enterprises.9148.3.2.1.2.2.1.1.10000000 = INTEGER: 1000000
SNMPv2-SMI::enterprises.9148.3.2.1.2.2.1.1.10000001 = INTEGER: 1000001
SNMPv2-SMI::enterprises.9148.3.2.1.2.2.1.2.36 = STRING: "sa1.dg.com"
SNMPv2-SMI::enterprises.9148.3.2.1.2.2.1.2.10000000 = STRING: "sa1.dg.com#192.168.26.2"
SNMPv2-SMI::enterprises.9148.3.2.1.2.2.1.2.10000001 = STRING: "sa1.dg.com#192.168.26.3"
SNMPv2-SMI::enterprises.9148.3.2.1.2.2.1.3.36 = INTEGER: 1
SNMPv2-SMI::enterprises.9148.3.2.1.2.2.1.3.10000000 = INTEGER: 1
SNMPv2-SMI::enterprises.9148.3.2.1.2.2.1.3.1000001 = INTEGER: 1
SNMPv2-SMI::enterprises.9148.3.2.1.2.2.1.4.36 = Gauge32: 0
SNMPv2-SMI::enterprises.9148.3.2.1.2.2.1.4.10000000 = Gauge32: 0
SNMPv2-SMI::enterprises.9148.3.2.1.2.2.1.4.10000001 = Gauge32: 0
FQDN-resolved Session Agent Statistics SNMP Traps

The apSysMgmtSAStatusChangeTrap trap is generated when a session agent's individual IP target changes state. The values populated in each of these trap's fields/varbinds include:

  • 1.3.6.1.2.1.1.3.0—System uptime
  • 1.3.6.1.6.3.1.1.4.1.0—OID of the trap
  • 1.3.6.1.4.1.9148.3.2.5.16.0—hostname/FQDN of the SA
  • 1.3.6.1.4.1.9148.3.2.5.17.0—IP address of the SA
  • 1.3.6.1.4.1.9148.3.2.5.18.0—state (Inservice/Out of Service)
  • 1.3.6.1.4.1.9148.3.2.5.19.0—status (Inservice/standby/Out of Service)

This feature requires that you enable the sa-routes-stats and sa-routes-traps parameters in the sip-config. This feature also requires that the session agent's ping-all-addresses function be active.