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docs/doc/source/datanet/changing-the-mtu-of-a-data-interface.rst
Ron Stone 11ded0cf7e Data Networks guide 
Applied M. Camp's comments on patchset 4.
Also, some additional formatting changes such as tidying line ends <= 79
characters, reformatting very wide ascii table as list table to control
line widths, etc.

Resolved conflict in _includes/data-networks-overview.rest

Change-Id: I8a2a80f21d3630849900e85dc2495da1668648af
Signed-off-by: Ron Stone <ronald.stone@windriver.com>
Signed-off-by: Stone <ronald.stone@windriver.com>
2020-11-23 09:17:34 -05:00

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Change the MTU of a Data Interface

You can change the MTU value for a data interface within limits determined by the data network to which the interface is attached.

The data interface MTU must be equal to or greater than the MTU of the data network.

You must lock the host for the interface on which you want to change the MTU.

  1. Lock all hosts attached to the data network.

    1. From Admin > Platform > Host Inventory, select the Hosts tab.
    2. From the Edit menu for the standby controller, select Lock Host.

  2. On all the hosts, edit the interface to change the MTU value.

    1. Click the name of the host, and then select the Interfaces tab and click Edit for the interface you want to change.
    2. In the Edit Interface dialog, edit the MTU field, and then click Save.

  3. Unlock all the hosts.

    From the Edit menu for the host, select Unlock Host.

    The network MTU is updated with the new value.