First Published: 4/24/2018       Last Modified: 4/24/2018      Last Modified by: LL    Article ID:229

Products Affected:   Thunderbolt Station, TS2 - Thunderbolt Station 2, TS3 Lite - Thunderbolt Station 3 Lite, TS3 - Thunderbolt Station 3, TS3 Plus

Jumbo Frames are Ethernet frames that can carry more than 1500 bytes of payload and it can go up to 9000 bytes. All CalDigit Thunderbolt Docks can support Jumbo frames. To enable Jumbo Frames in macOS: From the Apple menu, choose System Preferences. Click Network. In the left sidebar, select "Thunderbolt Ethernet Slot X" for your CalDigit Thunderbolt Dock. If you see a lock icon in the bottom left corner, click the lock icon and enter your administrator password. Click the "Advanced..." button. Click the Hardware tab. From the Configure: pop-up menu, choose "Manually". From the MTU pop-up menu, choose "Custom" or choose 9000. Click OK, then click Apply to save your changes. To test Jumbo Frame in macOS: Go to Terminal Application. Type in the command: ping -D -s 8164 [Your destination IP] , then hit enter. You will see more than 8000 bytes back from destination machine. To enable Jumbo Frames in Windows: From Windows Device Manager, choose Network Adapters. Choose Intel I210 Gigabit Network Connection, and right click on it, and choose "Properties" Click on "Advanced" Tab in Property section find "Jambo Packet" set the Value to 9014 Bytes" click OK. To test Jumbo Frame in Windows: Go to DOS command line. Type in command: ping -f -l 9000 [Your destination IP], then hit enter. You will see more than 8000 bytes back from destination machine. Note 1: Your Gigabit Ethernet Switch, Destination Machine and OS must support jumbo frames. Note 2: The Packet Size in Ping command may be slightly smaller or larger than the example above (8164). Note 3: If you have enabled Jumbo Frames on both sides, but see "Message too long" message from Ping command, try to reduce the Packet Size to 8100 in Ping command.

Additional Information: Jumbo Frame Support in CalDigit USB-C Dock Wikipedia: Jumbo Frame

Keywords : Jumbo Frame, Etehrent, MTU 9000