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A wildcard mask can be thought of as an inverted subnet mask. For example, a subnet mask of 255.255.255.0 (11111111.11111111.11111111.00000000 2) inverts to a wildcard mask of 0.0.0.255 (00000000.00000000.00000000.11111111 2). A wild card mask is a matching rule. [2] The rule for a wildcard mask is: 0 means that the equivalent bit must match
Subnet masks are also expressed in dot-decimal notation like an IP address. For example, the prefix 198.51.100.0 / 24 would have the subnet mask 255.255.255.0 . Traffic is exchanged between subnets through routers when the routing prefixes of the source address and the destination address differ.
A subnet mask is a bitmask that encodes the prefix length associated with an IPv4 address or network in quad-dotted notation: 32 bits, starting with a number of 1-bits equal to the prefix length, ending with 0-bits, and encoded in four-part dotted-decimal format: 255.255.255.0. A subnet mask encodes the same information as a prefix length but ...
network identifier: The destination subnet and netmask; metric: The routing metric of the path through which the packet is to be sent. The route will go in the direction of the gateway with the lowest metric. next hop: The next hop, or gateway, is the address of the next station to which the packet is to be sent on the way to its final destination
It is used as a local broadcast address for sending messages to all devices on the subnet simultaneously. For networks of size / 24 or larger, the broadcast address always ends in 255. For example, in the subnet 192.168.5.0 / 24 (subnet mask 255.255.255.0) the identifier 192.168.5.0 is used to refer to the entire subnet
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The network with the longest subnet mask or network prefix that matches the destination IP address is the next-hop network gateway. The process repeats until a packet is delivered to the destination host, or earlier along the route, when a router has no default route available and cannot route the packet otherwise.
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