How to send SNMP trap to alert when a BGP neighbor connection goes up/down

To show how to monitor the BGP neighbor state connections during flap.

• Palo Alto Firewall
• Supported PAN-OS
• BGP
• SNMP

If you want to monitor the up/down state you can forward the specific System log entries to an SNMP trap.
Use the procedure below 

1. In Device -> Log Settings -> System -> Add

• •  In Filter click on 'Filter Builder'
  • For 'Connector' select 'and'.
  • For 'Attribute' select 'Description'.
  • For 'Operator' select 'contains'.
  • In the 'Value' field type 'BGP'.
  • Click 'Add'

2. Now add a second Filter for the same

• • For 'Connector' select 'and'
  • For 'Attribute' select 'Severity'.
  • For 'Operator' select 'equal'.
  • For the 'Value' select the severity you want to monitor (e.g. high)
  • Click 'Add'

3. Now Select the SNMP Server these logs should be forwarded to
4. Click OK.
5. Commit the configuration.
6. Now the System logs with description having "BGP" and severity as "high"  are sent to the SNMP trap server.
7. Repeat the same process for "critical" and other severity to be monitored.
8. Screenshot of the "high" severity filter below.

• How to Configure SNMPv2 on the Palo Alto Networks Firewall
• There are no MIBs to poll the BGP status of the peers. but there there are SNMP Traps that can be used to report the BGP peer status change.
• Refer to the Traps below for information