Owners Manual

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mtu
Set the link maximum transmission unit (MTU) (frame size) for an Ethernet interface.
S4820T
Syntax
mtu value
To return to the default MTU value, use the no mtu command.
Parameters
value Enter a maximum frame size in bytes. The range is from 594
to 12000 for the S4820T. The default is 1554.
Defaults 1554
Command
Modes
INTERFACE
Command
History
This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.7(0.0) Introduced on the S6000-ON.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.1.1.0 Introduced on the E-Series ExaScale.
7.5.1.0 Introduced on the C-Series.
pre-Version
6.2.1.0
Introduced on the E-Series.
Usage
Information
If the packet includes a Layer 2 header, the difference between the link MTU and IP
MTU (ip mtu command) must be enough bytes to include the Layer 2 header.
When you enter the no mtu command, Dell Networking OS reduces the IP MTU
value to 1536 bytes.
Link MTU and IP MTU considerations for port channels and VLANs are as follows.
port channels:
Interfaces
789