Commands Reference, Volume 3

mmtu Command

Purpose

Displaying, adding, and deleting maximum transfer unit (MTU) values used for path MTU discovery. This command only applies to AIX 4.2.1 or later.

Syntax

mmtu { -a Value | -d Value | -s }

Description

Use the mmtu command to display, add, and delete maximum transfer unit (MTU) values to the list of potential path MTU values. Path MTU discovery uses the list of potential path MTU values to detect the path MTU. The list of potential path MTU values is only used when there are routers in the path that do not comply with RFC 1191. The user must have administrative authority to add or delete MTU values.

Flags

-a Value	Adds the new MTU to the list of potential path MTU values.
-d Value	Deletes the value from the list of potential path MTU values.
-s	Displays the current list of potential path MTU values.

Examples

To add a value to the list of potential path MTU values, enter:
```
mmtu -a mtu-value
```
To delete a value from the list of potential path MTU values, enter:
```
mmtu -d mtu-value
```
To display the contents of the list of potential path MTU values, enter:
```
mmtu -s
```

Files

/usr/sbin/mmtu

Contains the mmtu command.

Related Information

The netstat command, no command.