This article describes an issue that impacts the traffic flow on NP7 platforms with inbandwidth and outbandwidth configured on an interface.
Scope
FortiOS 7.2.6 +.
FortiOS 7.6.0.
Solution
To limit bandwidth at the interface level, inbandwidth and outbandwidth are enabled on the interface as shown below:
config system interface edit wan1 set inbandwidth 200000 set outbandwidth 200000 end
On FortiGates with NP7 chipset, when these commands are enabled, traffic loss has been observed.
Refer to the following link to Unset inbandwidth and outbandwidth.
Run the below-listed commands 5 to 8 times during the time of the issue and share the log file with FortiOS TAC for further investigation/troubleshooting:
diag npu np7 pdq 0 diag npu np7 pba 0 diag npu np7 dsw-ingress-stats 0 diag npu np7 dsw-egress-stats 0 diag npu np7 sse-stats 0 diag npu np7 sse-cmd-stats 0 diag npu np7 dce-drop-all 0 fnsysctl cat /proc/net/np7/np7_0/hif_que fnsysctl cat /proc/net/np7/np7_0/hif_stats