Chapter 30
| IP Interface Commands
IPv6 Interface
ā 931 ā
Default Setting
1500 bytes
Command Mode
Interface Configuration (VLAN)
Command Usage
ā If a non-default value is configured, an MTU option is included in the router
advertisements sent from this device.
ā The maximum value set by this command cannot exceed the MTU of the
physical interface, which is currently fixed at 1500 bytes.
ā IPv6 routers do not fragment IPv6 packets forwarded from other routers.
However, traffic originating from an end-station connected to an IPv6 router
may be fragmented.
ā All devices on the same physical medium must use the same MTU in order to
operate correctly.
ā IPv6 must be enabled on an interface before the MTU can be set.
Example
The following example sets the MTU for VLAN 1 to 1280 bytes:
Console(config)#interface vlan 1
Console(config-if)#ipv6 mtu 1280
Console(config-if)#
Related Commands
show ipv6 mtu (934)
jumbo frame (139)
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