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rishab444
Staff
rishab444
Staff
August 29, 2025

Technical Tip: How to resolve BGP SNMP polling issues caused by non-standard OID on FortiGate

  • August 29, 2025
  • 0 replies
  • 505 views
Description This article describes the steps to resolve BGP SNMP polling issues on FortiGate devices. The issue is caused by the FortiGate using a non-standard OID for the local AS value, which can be resolved by disabling the 'append-index' option in the SNMP configuration.
Scope FortiGate.
Solution

To resolve the BGP SNMP polling issue on FortiGate, follow these steps:

  1. Log in to the FortiGate device using the CLI.
  2. Enter the following command to disable the 'append-index' option:

    config system snmp sysinfo
        set status enable"
        set append-index disable
    end

Before disabling the 'append- index' option:


snmpget -v3 -l authPriv -u librenms -a SHA -A "XXXXXXXX" -x AES -X "YYYYYYYYYY" 10.252.2.6 1.3.6.1.2.1.15.2.0
iso.3.6.1.2.1.15.2.0 = No Such Instance currently exists at this OID

After disabling the 'append-index' option, the BGP SNMP polling should work correctly.

snmpget -v3 -l authPriv -u librenms -a SHA -A "XXXXXXXX" -x AES -X "YYYYYYYYYY" 10.252.2.6 1.3.6.1.2.1.15.2.0
iso.3.6.1.2.1.15.2.0 = INTEGER: 3924

If further issues are encountered, contact Fortinet Technical Support for assistance.

Related document:
Technical Tip: How to enable SNMP index extension in RFC tables
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