From: ccie2be (ccie2be@nyc.rr.com)
Date: Sat Feb 12 2005 - 12:34:51 GMT-3
Hi guys,
What pre-requisites, if any, exist for using this command?
I can see from the command reference below what this command does but I
don't understand when I can or should use this command. If someone can
provide a simple example or scenario that illustrates how this command
should or shouldn't be used, I would be very grateful.
Thanks, Tim
ipv6 address autoconfig
To enable automatic configuration of IPv6 addresses using stateless
autoconfiguration on an interface and enable IPv6 processing on the
interface, use the ipv6 address autoconfig command in interface
configuration mode. Addresses are configured depending on the prefixes
received in Router Advertisement messages. To remove the address from the
interface, use the no form of this command.
ipv6 address autoconfig
no ipv6 address autoconfig
Syntax Description
This command has no keywords or arguments.
Defaults
No IPv6 address is defined for the interface.
Command Modes
Interface configuration
Command History
Release Modification
12.2(13)T This command was introduced.
Usage Guidelines
If the Cisco IOS software detects another host using one of its IPv6
addresses, it will display an error message on the console.
The system automatically generates a link-local address for an interface
when IPv6 processing is enabled on the interface, typically when an IPv6
address is configured on the interface.
If router advertisements (RAs) received on this interface have the "other
configuration" flag set, then the interface will also attempt to acquire
other configuration (i.e., non-address) using DHCP for IPv6.
Examples
The following example assigns the IPv6 address automatically.
Router(config)# interface ethernet 0
Router(config-if)# ipv6 address autoconfig
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