We’ve got several Fortigates running BGP, all the BGP sessions from these routers show up nicely in the BGP routing sessions tab (button Routing, BGP All Sessions).
But we’ve also got a few Fortigates with VDOM’s running BGP, strangely enough these sessions are not shown under BGP All Session (or BGP internal / external).
It seems these sessions just aren’t being registered.
The physical Fortigate that is runnning these VDOM’s is added to LibreNMS, is there a way to also monitor the BGP Sessions from the VDOM’s?
Are you using SNMPv3?
Fortigate has since 5.6.11 enabled polling BGP information for VDOMs SNMPv3. See (554099 Can’t poll SNMP v3 statistics for BGP when ha-direct is enabled under SNMP user).
However, in order for it to work, LibreNMS has to append the user with “-name_of_vdom” to collect this information. It means that LibreNMS would have to loop through all VDOMs to find BGP peers.
Example to obtain BGP information from the “testing” VDOM where a user snmpv3user is configured: snmpwalk -v3 -l authPriv -n "" -a MD5 -A secret -u snmpv3user-testing -x AES -X secret -Oq udp:FIREWALLFQDN:161 1.3.6.1.2.1.15.3
OID to get the VDOM names: 1.3.6.1.4.1.12356.101.3.2.1.1.2
SNMPv2-SMI::enterprises.12356.101.3.2.1.1.2.1 “root”
SNMPv2-SMI::enterprises.12356.101.3.2.1.1.2.4 “testing”
I hope this helps the developers to figure out how to code it
