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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: When you change the MTU of either business network ibiz0 (also referred to as network0) or ibiz1 (also referred to as network1) on a dual-node system, 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.

On a single-node system, the VMs shutdown, so you should avoid changing the MTU. If you must change it, do so only during a planned maintenance period.

Prerequisite: If you want to change the MTU on a business network of a single-node system, shut down all VMs using that network before changing the MTU.

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

Click Networks in the left-hand navigation panel, to open the Networks page.
In the top pane, select the A-link or business network whose MTU you want to set.
Click Config.
In the Configure Shared Network window, select the Network Role (Business or A-Link).
Under MTU, type a bytes value from 1280 to 65535. The default values are:
- On 100i systems, the default value is 1500 for all Ethernet ports.
- On 110i systems, the default value depends on the Ethernet port:
  - For ports A1 (A-Link1) and A2 (priv0), the default value is 9000 (these ports are supported only on dual-node systems).
  - For ports P1 through P6 (ibiz0 through ibiz5), the default value is 1500
Click Save.

Related Topics

The Networks Page

The ztC Console

Using the ztC Console

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Product Documentation (PDF Format) ztC Edge User's Guide ztC Edge 100i/110i Systems: Deploying a Dual-Node System (R012Z) ztC Edge 100i/110i Systems: Replacing a Node (R013Z) ztC Edge 100i/110i Systems: Deploying a Single-Node System (R014Z) ztC Edge 100i/110i Systems: Adding a Node (R015Z)	About Help Help created at 10:29 PM on 4/29/2021.