Technical Tip: Slow or failed to load a video in YouTube

[amuda]

Description	This article describes one of the possible reasons why video or web pages are slow or fail to load.
Scope	FortiGate.
Solution	Slow/failed to load a video/YouTube page: Debug flow shows that traffic for this source IP address has exceeded the shaper limit and is being dropped: diagnose debug flow filter saddr 10.80.4.191 diagnose debug console timestamp enable diagnose debug flow show iprope enable diagnose debug flow show function-name enable diagnose debug flow trace start 100 diagnose debug enable Further, check on the Traffic Shaper configuration, there’s one policy enabled (Shaper-A): The shared shaper used shows that the max bandwidth allowed is 20 kbps as shown (20kbps has been used for demonstration purposes of this knowledge article):  There are two options to rectify the issue: Option 1: Increase the maximum bandwidth allowed. Option 2: Disable traffic shaper. with option 1: Changed the 'Bandwidth unit' to Mbps and increase the 'Maximum bandwidth' allowed (this depends on bandwidth capacity available) as shown: The video can load properly: No more dropped bytes observed: