Configuring LAN-bypass

The following procedure allows you to change the default settings for the LAN-bypass feature. Examples of when to change the parameters can include:

If you select one of the supported NICs that can perform hardware bypass in the Deployment Wizard, it will be enabled with the AUTO setting. Under the AUTO setting, the IWSVA monitors the critical services and OS kernel for crashes.  If it detects an unrecoverable error, it will open the NIC into "fail open" or bypass mode.

Use the  show network lanbypass command to check LAN bypass status on IWSVA.

To display/enable/disable/change the LAN-bypass service on the IWSVA unit:

  1. Login to the CLI interface.

  2. Execute one of the following commands

Command

Description

show network

lanbypass

Displays the current configuration status of LAN-bypass function.

configure network lanbypass on

Always bypasses traffic. After running this command, all traffic will be bypassed by LAN-bypass card.

Administrators may not be able to access the IWSVA device from the network data interface. The system will not adjust the LAN bypass status at any time.

configure network lanbypass off

Never bypasses traffic. The system will not adjust the LAN bypass status at any time.

configure network lanbypass auto

The system will auto-adjust the LAN bypass status. For example, when system starts and stops, the bypass will be turned off and turned on. When system is in an abnormal state (such as kernel panic), the bypass will be turned on. After recovery, the bypass will be turned off automatically.

The LAN bypass card configuration is saved at: /etc/lanbypass.conf. Migration updates the mapping table to import or export the LAN bypass configuration.

See also: