Jumbo frames on NetScaler VPX instances

Last published : Oct 01, 2026
NetScaler VPX appliances support receiving and transmitting jumbo frames containing up to 9216 bytes of IP data. Jumbo frames can transfer large files more efficiently than it is possible with the standard IP MTU size of 1500 bytes.
A NetScaler appliance can use jumbo frames in the following deployment scenarios:
  • Jumbo to Jumbo. The appliance receives data as jumbo frames and sends it as jumbo frames.
  • Non-Jumbo to Jumbo. The appliance receives data as regular frames and sends it as jumbo frames.
  • Jumbo to Non-Jumbo. The appliance receives data as jumbo frames and sends it as regular frames.
For more information, see Configuring Jumbo Frames Support on a NetScaler Appliance.
Jumbo frames support is available on NetScaler VPX appliances running on the following virtualization platforms:
  • VMware ESX
  • Linux-KVM Platform
  • Citrix® XenServer®
  • Amazon Web Services (AWS)
Jumbo frames on VPX appliances work similar to jumbo frames on MPX appliances. For more information on Jumbo Frames and its use cases, see Configuring Jumbo Frames on MPX appliances. The use cases of jumbo frames on MPX appliances also apply to VPX appliances.

Configure jumbo frames for a VPX instance running on VMware ESX

Perform the following tasks to configure jumbo frames on a NetScaler VPX appliance running on the VMware ESX server:
  1. Set the MTU of the interface or channel of the VPX appliance to a value in the range 1501–9000. Use the CLI or GUI to set the MTU size. The NetScaler VPX appliances running on VMware ESX support receiving and transmitting jumbo frames containing up to only 9000 bytes of IP data.
  2. Set the same MTU size on the corresponding physical interfaces of the VMware ESX server by using its management applications. For more information about setting the MTU size on the physical interfaces of VMware ESX, see http://vmware.com/.

Configure jumbo frames for a VPX instance running on Linux-KVM server

Perform the following tasks to configure jumbo frames on a NetScaler VPX appliance running on a Linux-KVM Server:
  1. Set the MTU of the interface or channel of the VPX appliance to a value in the range 1501–9216. Use the NetScaler VPX CLI or GUI to set the MTU size.
  2. Set the same MTU size on the corresponding physical interfaces of a Linux-KVM Server by using its management applications. For more information about setting the MTU size on the physical interfaces of Linux-KVM, see <http://www.linux-kvm.org/>.

Configure jumbo frames for a VPX instance running on Citrix XenServer

Perform the following tasks to configure jumbo frames on a NetScaler VPX appliance running on Citrix XenServer:
  1. Connect to the XenServer using XenCenter.
  2. Shut down all the VPX instances that use the Networks for which the MTU must be changed.
  3. On the Networking tab, select the network - network 0/1/2.
  4. Select Properties and edit MTU.
After configuring the jumbo frames on the XenServer, you can configure the jumbo frames on the ADC appliance. For more information, see Configuring Jumbo Frames Support on a NetScaler Appliance.

Configure jumbo frames for a VPX instance running on AWS

Host-level configuration is not required for VPX on Azure. To configure Jumbo Frames on VPX, follow the steps given in Configuring Jumbo Frames Support on a NetScaler Appliance.