Fortimanager looses FGM-Access over time

Hi, I´m using a Fortimanager (v.6.2.6) to serveral Fortigates (also v.6.2.6). Over time the Fortimanager looses the FGM-Acces to some Fortigate´s and I already debbugging it with this cookbooks: https://kb.fortinet.com/kb/documentLink.do?externalID=FD33882 https://kb.fortinet.com/k....do?externalID=FD48001 https://docs.fortinet.com/document/fortimanager/6.2.0/cli-reference/861511/fgfm-reclaim-dev-tunnel (he dont get the tunnel, but over time he get it without this command) [size="4"]But in the end I dont find the issue. Also i checked the ports for Input/Output errors (zero tx/rx errors, only sw_in_drop_pkts : 4 errors!?)[/size]

[size="4"]What can be the issue here?[/size]

Staff

Hello yoloknight,

Are you able to attach the sniffer captures during the time of the issue

Run sniffer on FortiGate using Putty with SSH connection and all session output logging:

diag sniff pack any "port 541 and host x.x.x.x" 6 0 a <- Where x.x.x.x is the FortiManager IP address.

At the same time, run a sniffer on FortiManager with the following syntax:

diag sniff pack any "port 541 and host y.y.y.y" 3 0 a <- Where y.y.y.y is the FortiGate IP address.

Along with the debugs:

Debug on FortiGate.

diag debug reset
diag debug application fgfmd 255
diag debug console time enable
diag debug en

--replicate issue--
diag debug disable

Regards,
ajoy

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