Configuring Ethernet Port Settings
By default, the gateway automatically detects the Ethernet port's link speed and duplex. If desired, you can manually restrict the Ethernet port to a specific link speed and duplex.
You can also configure gateway to use jumbo frames. While the standard Ethernet frame is 1500 bytes, jumbo frames are larger, with the conventional jumbo frame size being 9000 bytes.
Warning: If you enable jumbo frames, you must configure all computers in the gateway's network segment to use the same Ethernet frame size (maximum transmission unit, or MTU). If you do not set all computers to the same MTU, you may lose connectivity to the gateway.
To configure the Ethernet port settings:
1 In the CONFIGURATION tab, select System > Network in the navigation pane.
The Network page is displayed.
2 Click Settings.
The Network Configuration window is displayed.
3 Select the Ethernet option.
4 Specify the Ethernet settings.
Port Speed – (Only displayed with C200 and C400 gateways) Select Automatic to configure the port to automatically detect the link speed and duplex or a specific speed and duplex For all other CTERA gateways, the port speed is determined by the underlying hypervisor, such as ESXi for X- or H-Series gateways or for virtual gateways running under ESXi.
Manual MTU – Manually set the maximum transmission unit (MTU), for example for jumbo frames.
MTU – The maximum transmission unit in bytes. The minimum MTU for jumbo frames is 1500.
5 Click Save.