IPv6 (Cisco) Training - Using the "DNS server and a domain name (IPv6)" Commands

Well, since this article is a kind of long I'm going straight down to it, so without further ado let us begin.

The "DNS - server" (IPv6) command, a Cisco IOS "DHCP for IPv6 pool configuration mode command is used to specify the network Domain Name System (DNS) server IPv6 (s) available on one.

Here is the correct syntax and example of the "DNS - server" (IPv6) command:

Syntax: router (config-dhcp) #> DNS - Server IPv6 address
Example: Router (config-dhcp) # dns - server 2001:0 DC8: 3000:3000:: 42

Note that the router prompt "DHCP for IPv6 pool configuration" mode argument is the IPv6 address and IPv6 address of the DNS server available.

Now, in case you're wondering if you can use (configure) the "DNS - server" (IPv6) command several times on a router, if you have multiple DNSnetwork servers. And the new IPv6 addresses delete (overwrite) the current (old) IPv6 addresses.

Also, if you search for a specific DNS server for the list of DNS servers, all you have to do is type the word "no" in front of the command as you can see below:

-Address-dhcp) # no DNS - server config ipv6 Syntax: router (
Example: Router (config-dhcp) # no DNS - server2001:0 DC8: 3000:3000:: 42

Ok, that basically sums up the "DNS - server" (IPv6) command, so, go to "domain name" (IPv6) command.

The "domain name" (IPv6) is also a command from Cisco IOS "DHCP for IPv6 pool configuration" mode command, but is used to configure a domain name for a DHCP client for IPv6, also known as a router or an applicant RR.

Here is the correct syntax and example of the "domain name" (IPv6)command:

Syntax: router (config-dhcp) # domain domain
Example: Router (config-dhcp) # domain ittechtips.com

Announcement that the router prompt is still "DHCP for IPv6 pool configuration" mode and domain of the argument concerning the domain name is used by the client. So in the example above, the router (client) uses the domain name ittechtips.com.

And, like the "DNS - server" (IPv6) command, the "domain name" (IPv6)command can be used (configured) multiple times on a router. And, new domain names do not delete (overwrite) the existing domain names.

Finally, if you delete a domain name to a DHCPv6 client (RR) should see the word "no" to the "domain name" (IPv6) command as shown below:

Syntax: router (config-dhcp) # no domain domain
Example: Router (config-dhcp) # no domain ittechtips.com

I hope this article is very informativeand helped you quickly understand the use of "DNS - server and the domain name" (IPv6) commands. If you need to learn, I suggest you go to my website, where the latest information on Cisco IPv6 design and deployment techniques available.

To your success,

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