Product Documentation

Step 1: Configuring vPath on a NetScaler

Oct 06, 2014

All data transmitted between the NetScaler virtual appliance and the server is vPath encapsulated. By default, vPath is disabled on the NetScaler virtual appliance. Therefore, to configure vPath on a NetScaler, you must first enable vPath, and then configure a SNIP address as the source of the vPath packet when the packet is forwarded to the switch.

If, in the return flow, the vPath packet is received at an IP address other than the specified SNIP address, the appliance drops the packet.

To configure vPath on a NetScaler by using the command line interface

At the command prompt, do the following:

  1. Enable vPath on the NetScaler virtual appliance.

    enable ns feature vPath

  2. Specify the SNIP address to be used as the source IP address of the vPath packet. You can also specify whether the NetScaler must offload to the VEM, sessions for which the NetScaler has no matching configurations and hence not interested in.

    set vPathParam -srcIP <ip_addr> -offload <ENABLED | DISABLED>

    Note:
    • When the offload parameter is enabled, the NetScaler adds an extra 24 bytes to the vPath header.

    • By default, the NetScaler IP (NSIP) address is configured as the vPath source IP address. However, the show vPathParam command shows the source IP address as 0.0.0.0.

  3. If you have a server that is not configured as a service on the NetScaler, you must explicitly enable vPath encapsulation as follows:

    add vpath <name> (<destIP> [<netmask>] [<gateway>]) -encapMode L3

  4. Save the configurations.

    save ns config

To configure vPath on a NetScaler by using the graphical user interface

  1. Navigate to Configuration > System > Settings.
  2. In the details pane, under Modes and Features, click Configure advanced features and select the vPath checkbox.
  3. Navigate to Configuration > System > Network.
  4. In the details pane, under Settings, click Configure VPath Parameters and select the appropriate SNIP address as the source address.
  5. To enable vPath encapsulation on a server that is not configured on the NetScaler, navigate to Configuration > System > Network > vPath.
  6. In the details pane, click Add and provide the required details.