Dell S3100 Command Line Reference Guide for the Series 9.112.1 - Page 792
ip mtu
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• show ipv6 route - display the IPv6 routes. ip mtu Set the IP MTU (frame size) of the packet the RPM transmits for the line card interface. If the packet must be fragmented, Dell Networking OS sets the size of the fragmented packets to the size specified in this command. Syntax ip mtu value To return to the default IP MTU value, use the no ip mtu command. Parameters value Enter the maximum MTU size if the IP packet is fragmented. The range is from 576 to 9234. The default is 1500 bytes. Defaults Command Modes Command History 1500 bytes INTERFACE (Gigabit Ethernet and 10-Gigabit Ethernet interfaces) This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking OS Command Line Reference Guide. Verison 9.10(0.0) 9.8(2.0) 9.8(0.0P5) 9.8(0.0P2) 9.2(1.0) 8.3.19.0 8.3.7.0 8.1.1.0 6.1.1.0 Description Introduced on the S3148. Introduced on the S3100 series. Introduced on the S4048-ON. Introduced on the S3048-ON. Introduced on the Z9500. Introduced on the S4820T. Introduced on the S4810. Introduced on the E-Series. Introduced on the E-Series. Usage Information When you enter the no mtu command, Dell Networking OS reduces the ip mtu value to 1536 bytes. To return the IP MTU value to the default, use the no ip mtu command. Starting with Dell Networking OS Release 9.2(0.2), the ip mtu command is not supported to configure the IP MTU value that is used when the IP packet is fragmented. Instead of having to configure the IP MTU value, this value is automatically computed by the software when you configure an interface. As a result, the ip mtu command is not available for configuration. However, you can continue to specify the link MTU value by using the mtu command. Compensate for Layer 2 header when configuring link MTU on an Ethernet interface or Dell Networking OS may not fragment packets. If the packet includes a Layer 2 header, the difference between the link MTU and IP MTU (the ip mtu command) must be enough bytes to include for the Layer 2 header. 792 IPv4 Routing
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