Setting the MTU

Network performance improves with the highest maximum transmission unit (MTU) that the network can support. You can specify the MTU value for A-link and business (biz) networks using the Networks page of the ztC Console.

Note: If you change the MTU of either business network ibiz0 (also referred to as network0) or ibiz1 (also referred to as network1), the system automatically migrates the VMs from one node to the other. If you change the MTU for ibiz0 specifically, the system also automatically fails over from the primary node to the secondary node. To avoid this issue, avoid changing the MTU of the business networks, or change the MTU only during a planned maintenance period.

To set the MTU of an A-Link or business network

  1. Click Networks in the left-hand navigation panel, to open the Networks page.
  2. In the top pane, select the A-link or business network whose MTU you want to set.
  3. Click Config.
  4. In the Configure Shared Network window, select the Network Role (Business or A-Link).

  5. Under MTU, type a bytes value from 1280 to 65535 (the default is 1500).

  6. Click Save.

Related Topics

The Networks Page

The ztC Console

Using the ztC Console

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Help created at 10:16 PM on 4/29/2021.