ipv6 mtu
29-12 IPv6 Configuration
Usage
When this command is executed, an IPv6 link-local unicast address is configured on the interface
and IPv6 processing is enabled. You do not need to use this command if you configured an IPv6
global address on an interface with the ipv6 address command.
The no ipv6 enable command disables IPv6 routing on an interface that has been enabled with the
ipv6 enable command, but it does not disable IPv6 processing on an interface that is configured
with an explicit IPv6 address.
Example
This example enables IPv6 processing on VLAN 7. Note that a link-local address has been
automatically configured.
C3(su)->router(Config-if(Vlan 7))# ipv6 enable
C3(su)->router>show ipv6 interface vlan 7
Vlan 7 Administrative Mode Enabled
Vlan 7 IPv6 Routing Operational Mode Enabled
IPv6 is Enabled
IPv6 Prefix is FE80::211:88FF:FE55:4A7F/128
Routing Mode Enabled
Interface Maximum Transmit Unit 1500
Router Duplicate Address Detection Transmits 1
Router Advertisement NS Interval 0
Router Lifetime Interval 1800
Router Advertisement Reachable Time 0
Router Advertisement Interval 600
Router Advertisement Managed Config Flag Disabled
Router Advertisement Other Config Flag Disabled
Router Advertisement Suppress Flag Disabled
ipv6 mtu
This command configures the maximum transmission unit (MTU) size of IPv6 packets that can be
sent on an interface.
Syntax
ipv6 mtu bytes
no ipv6 mtu
Parameters
Defaults
1480 bytes
Mode
Router interface configuration: C3(su)->router(Config-if(Vlan 1))#
bytes Specifies the MTU value in bytes. The value can range from 1280 to 1500
bytes. The MTU cannot be larger than the value supported by the
underlying interface.
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