Dell S6000 Reference Manual page 656

Command line for the system

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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 9.0.2.0

Version 8.3.11.1

Version 8.3.7.0

Version 8.1.1.0

Version 7.5.1.0

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:

Enter a maximum frame size in bytes. The range is from 594

to 9252 for the S6000. The default is 1554.

Introduced on the S6000.

Introduced on the S4820T.

Introduced on the Z9000.

Introduced on the S4810.

Introduced on the E-Series ExaScale.

Introduced on the C-Series.

Introduced on the E-Series.

All members must have the same link MTU value and the same IP MTU value.

The port channel link MTU and IP MTU must be less than or equal to the link

MTU and IP MTU values configured on the channel members. For example, if

the members have a link MTU of 2100 and an IP MTU 2000, the port channel's

MTU values cannot be higher than 2100 for link MTU or 2000 bytes for IP MTU.

All members of a VLAN must have same IP MTU value.

Members can have different Link MTU values. Tagged members must have a

link MTU 4 bytes higher than untagged members to account for the packet tag.

The VLAN link MTU and IP MTU must be less than or equal to the link MTU and

IP MTU values configured on the VLAN members. For example, the VLAN

contains tagged members with Link MTU of 1522 and IP MTU of 1500 and

untagged members with Link MTU of 1518 and IP MTU of 1500. The VLAN's Link