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Why shortened version of IP4 exists and it is undocumented but supported everywhere?

Take a look at Textual Representation of IPv4 and IPv6 Addresses In particular: Meanwhile, a very popular implementation of IP networking went off in its own direction. 4.2BSD introduced a ...
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4 votes

Why shortened version of IP4 exists and it is undocumented but supported everywhere?

Those variants are remnants from the classful networking era that ended in 1993. They allowed you to use the class prefix in combination with a single, host-specific number, but not limited to that. ...
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1 vote

Why should I use vlans instead of subnets?

VLAN's and subnets are not competing solutions to the same problem. They exist independent of one another. A local area network is one or more switches linked together. VLAN's are enabled by software ...
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Why should I use vlans instead of subnets?

TLDR; VLANs reduce unneeded local broadcast traffic and can also reduce the ACL control points if paired with a logical IP range partitioning, besides reducing the network vulnerabilities exposure. ...
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2 votes
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How to create a subnet or secondary network? Do I need VLANs?

As has been pointed out in the comments, that's quite a "grown" network with little structure. However, unless you're out of switch ports you don't seem to need additional hardware. Things ...
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2 votes
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Why should I use vlans instead of subnets?

Why should I use vlans instead of subnets? VLANs cannot replace IP subnets. But they can structure your network - for scalability, resilience, security, or some other reason. Since hosts in different ...
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2 votes

Why should I use vlans instead of subnets?

VLANs are not a substitute for subnets, they are a substitute for physical LANs: actual wired connections. You use them in addition to subnetting, router ACLs, etc., not instead of. So, you could have ...
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2 votes

Why should I use vlans instead of subnets?

Broadcast domain is a layer 2 network, while subnet is a layer 3 network. When you understand the purposes an differences between them, read on. VLAN is a feature of Ethernet switch which separates ...
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  • 391
2 votes

Why is this 254.63.0.1, not a valid host address?

240.0.0.0/4 is reserved by ARIN (SPECIAL-IPV4-FUTURE-USE-IANA-RESERVED). Likely, the switch is rejecting that address because it's part of the pre-1993 class E address range. Many hosts and devices ...
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