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If an ISP deploys a CGN and uses private Internet address space [2] (networks 10.0.0.0 / 8, 172.16.0.0 / 12, 192.168.0.0 / 16) to connect their customers, there is a risk that customer equipment using an internal network in the same range will stop working.
A wildcard mask is a mask of bits that indicates which parts of an IP address are available for examination. In the Cisco IOS, [1] they are used in several places, for example:
In Internet networking, a private network is a computer network that uses a private address space of IP addresses.These addresses are commonly used for local area networks (LANs) in residential, office, and enterprise environments.
Classless Inter-Domain Routing (CIDR / ˈ s aɪ d ər, ˈ s ɪ-/) is a method for allocating IP addresses for IP routing.The Internet Engineering Task Force introduced CIDR in 1993 to replace the previous classful network addressing architecture on the Internet.
In computing, the superuser is a special user account used for system administration.Depending on the operating system (OS), the actual name of this account might be root, administrator, admin or supervisor.
Admin-local The smallest scope that must be administratively configured. ffx5::/16: Site-local Restricted to the local physical network. ffx8::/16: 239.192.0.0/14: Organization-local Restricted to networks used by the organization administering the local network.
Open Shortest Path First (OSPF) is a routing protocol for Internet Protocol (IP) networks. It uses a link state routing (LSR) algorithm and falls into the group of interior gateway protocols (IGPs), operating within a single autonomous system (AS).
IANA, who allocate IP addresses globally, have allocated the single IP address 0.0.0.0 [1] to RFC 1122 section 3.2.1.3. It is named as "This host on this network". RFC 1122 refers to 0.0.0.0 using the notation {0,0}.