Technical Tip: Important Changes to Traffic Shaping on FortiGate with NP7 Queuing-Based Traffic Management (QTM) Module

[vpalli]

Description	This article outlines the important changes to the Traffic Shaping implementation on FortiGate with NP7 Queuing-Based Traffic Management (QTM) Module.
Scope	FortiGate.
Solution	Starting from v7.4.8 and v7.6.1 The QTM module on NP7 will not be used for policy shaping, per-ip shaping, and regular interface shaping i.e. configuring 'set outbandwidth' settings on an interface without a shaping profile. Instead, a Traffic Policing Engine (TPE) will be used. The following configuration will not support an option to configure queuing-based shaping. config system npu     set default-qos-type {policing | shaping} <----- From previous firmware.     set default-qos-type {policing} ---> On new firmware, shaping option is removed. end Despite the default QoS type always set to policing, the QTM module on NP7 will still be utilized when a shaping profile is configured on the interfaces. These interfaces may include physical interfaces, IPSec interfaces, LAG interfaces, or VLAN interfaces over physical or LAG types. config system interface     edit <interface>     ....         set egress-shaping-profile "Day_Hours_Profile"         set outbandwidth 10000     ....     next end Note that a maximum of 672 shaping profiles can be active at any given time on any NP7 platform FortiGate device. This limit also applies to the child tunnels of a Dialup IPsec tunnel when a shaping profile is applied to the Dial-Up Tunnel Interface. When configuring a shaping profile, the interface MTU cannot exceed 6000 bytes. If the interface MTU is greater than 6000 bytes, the interface will not accept a shaping profile. The above changes are scheduled to be implemented on: FortiOS v7.2.11 (available to be downloaded from the Fortinet support portal). FortiOS v7.4.8 (scheduled to be released in April; 2025) FortiOS v7.6.1 (available to be downloaded from the Fortinet support portal). These timelines for firmware release are estimates and may be subject to change. This article will be updated periodically with the latest information.