Very well, to make a long story short; the Software command “ipv6 address” is employed to assign (configure) a layer 3 IPv6 address to a Cisco router’s interface. Currently, there are five different methods the “ipv6 address” command can be used. 192.168.l.l Admin

View Examples Listed below:

Syntax: Router(config-if)#ipv6 address ipv6 address/prefix-length
Example: Router(config-if)#ipv6 address 2001: 100: 100: 95:: 1/64
2. Syntax: Router(config-if)#ipv6 address ipv6 prefix/prefix-length anycast

Example: Router(config-if)#ipv6 address 2001: 0DB8: 1: 1:: /64 anycast

3. Syntax: Router(config-if)#ipv6 address autoconfig [default] 

Example: Router(config-if)#ipv6 address autoconfig

4. Syntax: Router(config-if)#ipv6 address ipv6 prefix/prefix-length eui-64

Model: Router(config-if)#ipv6 address 2001: 75: 100: 100:: /64 eui-64

5. Syntax: Router(config-if)#ipv6 address ipv6 link-local address/prefix-length link-local

Example: Router(config-if)#ipv6 address FE80:: 260: 3EFF: FE11: 5770/64 link-local

IPv6 Address Order Examples Explained:

1 ) Syntax: Router(config-if)#ipv6 address ipv6 address/prefix-length

Example: Router(config-if)#ipv6 address 2001: 100: 100: 75:: 1/64

The first example is using the “ipv6 address” command to designate (configure) an IPv6 Global Unicast Address (GUA) for an interface. Notice, in the first example the “ipv6 address” command is requiring the complete IPv6 address and the prefix-length. The prefix-length (/64) is indicating how many high order parts are being used for the network portion of the GUA.

installment obligations on your Syntax: Router(config-if)#ipv6 address ipv6 prefix/prefix-length anycast

Example: Router(config-if)#ipv6 address 2001: 0DB8: 1: 1:: /64 anycast

The 2nd example is using the “ipv6 address” command to assign (configure) an IPv6 Anycast Address to an interface. Find, in the second example the “ipv6 address” command word is merely requiring the IPv6 prefix (network portion) of your IPv6 address and the prefix-length, followed by the word “anycast”.

3. Format: Router(config-if)#ipv6 address autoconfig [default]

Example: Router(config-if)#ipv6 address autoconfig

The next example is using the “ipv6 address” command to help make the interface in question automatically autoconfigure itself with an IPv6 address using stateless autoconfiguration. You can also use the key word “default” to make the interface use a standard route. But remember, the keyword “default” can only be taken on one user interface.

4. Syntax: Router(config-if)#ipv6 address ipv6 prefix/prefix-length eui-64

Model: Router(config-if)#ipv6 address 2001: 90: 100: 100:: /64 eui-64

The fourth example is using the “ipv6 address” command to assign (configure) an IPv6 Global Verbindung mit einem ziel Address (GUA) to an interface. Yet, unlike the first example; this example is demanding that the “ipv6 address” command use the IPv6 prefix (network portion) of an IPv6 address and the prefix-length; and then the word “eui-64”. In other words, in this example, the interface is heading to assign (configure) a GUA to itself; by combining the IPv6 word (network portion) which are the first sixty four (/64) high order pieces; with the sixty four low-order bits which are the EUI-64 Interface Designation. The EUI-64 Interface Designation, is actually the interface’s layer 2 address (MAC Address) that has recently been modified into EUI-64 format.

5. Syntax: Router(config-if)#ipv6 address ipv6 link-local address/prefix-length link-local

Example: Router(config-if)#ipv6 address FE80:: 260: 3EFF: FE11: 5770/64 link-local

The fifth example is using the “ipv6 address” command to allocate (configure) a specific (certain) layer 3 Link-Local Address to an interface. See, that in the sixth example, the “ipv6 address” command is requiring the complete IPv6 link-local address and the prefix-length, followed by the word “link-local”. The “link-local” word is informing the interface, to set up (assign) the link-local address (FE80:: 260: 3EFF: FE11: 5770) to the user interface and also overwrite any link-local address which may have been configured (assigned) earlier “automatically” from the interface’s MAC Address.

I actually invite you to visit my website were likely to find the latest information regarding Cisco IPv6 Style and Implementation Techniques.

To your success,

Charles Ross, CCNP #CSCO10444244 are the owners of Ittechtips. contendo; where you will discover free thorough information and videos about IPv6 technology and how it works with Barullo Systems technology.

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