Resolve Issues with Data Transfer Rate

Issue

The data transfer rate between your radio and host depends on the specifications and quality of your network connection. If you successfully connect and set up your radio using the Radio Setup wizard and your radio passes the validation steps, you can still encounter issues with data transfer speeds.

For help resolving issues encountered with connecting your radio to your host during radio setup with the Radio Setup wizard, see Resolve Issues with Connecting Radio to Host. For help resolving errors that you encounter during the validation tests, see Resolve Issues with Radio Setup Validation.

Possible Solutions

Configure Host Ethernet Adapter Driver Settings

If you are using a Windows^® operating system, you can manually configure the Ethernet adapter driver settings on your host computer to optimize your data transfer speed. To configure these settings, follow these steps.

Open Windows Device Manager.
Under Network adapters, identify the entry that corresponds to the network interface card (NIC) you are using for your Ethernet connection to the radio.
Right-click the entry and click Properties in the context menu to open the Properties dialog box for your Ethernet adapter.

Verify Ethernet Network Adapter. To verify that an appropriate Ethernet network adapter driver is installed and working properly, click the Driver tab in the Properties dialog box. Verify the driver.

Configure Frame Size for 1 Gigabit Ethernet. To configure your host for 1 Gigabit Ethernet, first confirm that jumbo frames are not enabled.

In the Properties dialog box for your Ethernet adapter, click the Advanced tab.
Set the Jumbo Packet (or Jumbo Frame) value to one of the following options.
- If the dialog box has a dropdown menu, select disabled.
- If you can enter a value, enter 1514. The maximum size of a standard Ethernet frame, including the header, is 1514.

Then, set the maximum transmission unit (MTU) size of your network interface.

Open a Windows command prompt or PowerShell as an administrator.
Use network shell, netsh, to display details about your network interfaces.
```
netsh interface ipv4 show subinterfaces
```
Identify your Ethernet adapter from the list. Set the MTU value to 1498.
```
netsh interface ipv4 set subinterface "<name of interface>" mtu=1498 store=persistent
```
Note
In UHD™ version 4.6.0.0, the radio firmware adds two bytes to the MTU value that you set using netsh. The maximum payload of a standard Ethernet frame is 1500 bytes, so you must set the MTU value to 1498. (since R2025a)

Configure Frame Size for 10 Gigabit Ethernet. To configure your host for 10 Gigabit Ethernet, first enable jumbo frames. Jumbo frames are Ethernet frames that are larger than the maximum payload of a standard Ethernet frame, which is 1500 bytes.

In the Properties dialog box for your Ethernet adapter, click the Advanced tab.
Set the Jumbo Packet (or Jumbo Frame) value to one of the following options.
- If the dialog box has a dropdown menu, select the largest value.
- If you can enter a value, enter 9014, or the maximum supported value. The maximum size of an Ethernet jumbo frame, including the header, is 9014.

Then, check the MTU size of your network interface.

Open a Windows command prompt or PowerShell as an administrator.
Use network shell, netsh, to display details about your network interfaces.
```
netsh interface ipv4 show subinterfaces
```
Identify your Ethernet adapter from the list. If you set the jumbo packet value to 9014, set the MTU size to 9000. If you set jumbo packet value to a different value, set the MTU size accordingly.
```
netsh interface ipv4 set subinterface "<name of interface>" mtu=9000 store=persistent
```

Increase Receive Buffer Size. To verify that the receive buffer size is set to the maximum supported value, in the Advanced tab, select Receiver Buffers (or Receiver Descriptors). Set the value to the maximum supported value, for example, 2048. For some Ethernet controller drivers, the setting is under Performance Options.

Note

If you are using a USB3/Ethernet adapter dongle and you cannot access this setting, you might not be able to achieve the required data transfer speed. Consider using a dedicated NIC or a different adapter dongle.

Optimize or Upgrade Your Network Connection

If you are using a 1 Gigabit NIC, consider upgrading it to a 10 Gigabit NIC.

If you are using a USB3/Ethernet adapter dongle:

If you are also using a laptop, connecting the laptop to a power supply can improve data transfer speed.
Consider trying a different model of adapter.
Consider having an additional NIC installed on your computer that you can use to connect to the radio.