D-Link DGS-6608 — настройка MTU на коммутаторах: руководство по командам [514/1106]

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DGS-6600 Series Switch m mtu

CLI Reference Guide

504

mtu

Use the command to set the MTU value. This value is used to monitor oversize

IP packets. Use default form to restore to the default mtu size.

mtu BYTES

default mtu

Default BYTES: 1500 bytes.

Command Mode Interface command for physical port and port channel but not for VLAN.

Usage Guideline Oversize packets will be sent to the control module blade for further processing

and the check is done in egress ports. This is especially important to support

IPv6 because an IPv6 router should send out ICMP messages to source device

for an MTU violation situation.

As a port is removed from the port-channel member list, the MTU setting for the

port will be reset to the default setting.

One should set appropriate values to these MTUs to avoid unexpected results. In

the general case, max- rcv-frame-size is larger than the ip mtu and mtu to cover

L2 header size. mtu is set as the same value as ip mtu.

Note: For new generation IO cards, such as DGS6600-16XS, they support MTU

for vlan interface. When you configure the IP MTU, MTU is also set. In these IO

cards, MTU for physical port is not necessary and not supported.

Examples This example shows how to set mtu as 6000 bytes at eth4.1.

This example shows how to restore the default mtu.

Verify the settings by entering the show interface command.

Syntax Description

BYTES Set the monitor threshold. The range that can be set is 1280 to 9692 bytes.

Switch# configure terminal

Switch(config)# interface eth4.1

Switch(config-if) mtu 6000

Switch(config-if)# end

Switch# configure terminal

Swtich(config)# interface eth4.1

Switch(config-if)# default mtu

Switch(config-if)# end