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IPv6 Training (Cisco): What is Site Renumbering? 

Added: 08/10/2008, Hits: 5,024, Rating: 0, Comments: 0, Votes: 0
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Well, since you are an IPv6 enthusiast; you may have been hearing a technical term floating around called “Site Renumbering”. But, you’re still unsure what the term actually means.

Site Renumbering, is the process in which a site (organization) is able to remove its old existing network prefix and host address information and replace it with new network prefix and host address information.

I know your next question probably is “Why would a site (organization) want to do some like that?” Well, there are several reasons why:

  • The Site (Organization) may have changed to a different Internet Service Provider (ISP).

  • The Site’s (Organization) internal topology maybe growing, so, the site’s IT team has decided to just reorganize the entire site’s network.

  • One Site (Organization) maybe merging with another Site (Organization).

  • Or, the Site (Organization) was once a completely private network, but, now the site (organization) wants certain servers to be accessible via the public domain (IPv6 internet).

Technically, Site Renumbering is not an easy thing to do; because most of the time the old address information lingers around in various server caches on the network. But, implementing the IPv6 protocol can take away some of the difficulties related to Site Renumbering; because, the IPv6 protocol can use either the Stateful Autoconfiguration mechanism (which is DHCPv6 Server related) or the Stateless Autoconfiguration mechanism (which is Router related) to implement Site Renumbering.

Well, as you can begin to see Site Renumbering is a concept that is going to be with us for a very long time; it is essential to know for proper IPv6 network design and implementation.

I invite you to visit my website at were you’ll find the latest information regarding Cisco IPv6 Design and Implementation Techniques.

To your success,

Charles Ross
CCNP #CSCO10444244

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