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This command first appeared in Cisco IOS Release 10.0. The ip subnet-zero command provides the ability to configure and route to subnet-zero subnets.

2023/2/7 -If a network address is subnetted, the first subnet obtained after subnetting the network address is called subnet zero. Consider a Class B ...

The quick answer to this question is NO. Your Cisco IOS router, by default, has the command ip subnet-zero enabled on the router. Because of this command, the ...

2015/1/8 -The simple answer is it was reserved for future use, but wasn't really utilized so now we usually just use it as host address space.

2017/9/26 -IP subnet-zero is on by default in most Cisco routers. But it's a beauty! this command allows u to use the first and the last subnet in your ...

When subnetting a network, the 0 subnet (the subnet whose subnet bits are all 0) is normally not allowed because of potential confusion between the subnet ...

A subnetwork, or subnet, is a logical subdivision of an IP network. : 1, 16 The practice of dividing a network into two or more networks is called ...

2016/2/3 -If a question says that "no ip subnet-zero" has been configured (the IOS 10/11 default), then you can't use the first or last subnet. At one ...

2017/4/27 -The subnet-zero would allow 4 subnets above to be used instead of just 2. This command is the default on current IOS, and doesn't need to be ...