Chapter 25
| IP Interface Commands
IPv6 Interface
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Command Usage
◆ The maximum value set by this command cannot exceed the MTU of the
physical interface, which is currently fixed at 1500 bytes.
◆ 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.
◆ All devices on the same physical medium must use the same MTU in order to
operate correctly.
◆ 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 (559)
jumbo frame (89)
show ipv6
default-gateway
This command displays the current IPv6 default gateway.
Command Mode
Normal Exec, Privileged Exec
Example
The following shows the default gateway configured for this device:
Console#show ipv6 default-gateway
IPv6 default gateway 2001:DB8:2222:7272::254
Console#
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