13 Ethernet
(2) Setting the MTU for all ports
Points to note
If you set 4096 octets as the MTU for the all ports on a Switch, jumbo frames without
VLAN tags up to 4110 octets and jumbo frames with VLAN tags up to 4114 octets
can be sent and received.
Command examples
1.
(config)# system mtu 4096
Sets 4096 octets as the MTU for the all ports on the Switch.
Notes
Even if the MTU for all ports is set by using a configuration command, the MTU is
fixed at 1,500 octets when a 10BASE-T or 100BASE-TX half-duplex connection is
used. This note also applies when auto-negotiation results in a 10BASE-T or
100BASE-TX half-duplex connection.
164