Symptoms
Due to a syntax issue in /etc/alert/alertd.conf, SNMP traps sent for notifying RSTs sent due to maintenance mode on are not being sent.
Impact
snmp traps are not sent
Conditions
Reset cause logging and maintenance mode are enabled
Snmp trap destination is configured and routable
Workaround
Adding custom trap in /config/user_alert.conf with escaped characters will workaround the issue:
alert BIGIP_IP_REJECT_MAINT_MODE_FIX "RST sent from (.*) Maintenance mode \(all VIP\/SNAT\/Proxy connections disabled\)" {
snmptrap OID=".1.3.6.1.4.1.3375.2.4.0.34"
}
Fix Information
BIG-IP now correctly sends SNMP traps when configured to do so with TCP resets in maintenance mode.
