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Typo fixes
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edit approved Oct 13, 2022 at 20:33
tripleee
edit approved Oct 13, 2022 at 20:33
tripleee
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A VLAN is an Ethernet level concept, a subnet is an IP level concept.

A VLAN splits an Ethernet network into multiple logically seperateseparate Ethernet networks.

A subnet defines which hosts a host will try to communicate with directly verses, versus which hosts will need to go via a router. It also defines "network" and "broadcast" addresses.

It is common practice to have a 1:1 mapping between subnets and VLANs, but it is perfectly possible to have multiple subnets on the same VLAN. Equally it is possible to use proxy arpARP to split a subnet between multiple VLANs or even have two VLANs using the same IP subnet for different purposes.

A VLAN is an Ethernet level concept, a subnet is an IP level concept.

A VLAN splits an Ethernet network into multiple logically seperate Ethernet networks.

A subnet defines which hosts a host will try to communicate with directly verses which hosts will need to go via a router. It also defines "network" and "broadcast" addresses.

It is common practice to have a 1:1 mapping between subnets and VLANs but it is perfectly possible to have multiple subnets on the same VLAN. Equally it is possible to use proxy arp to split a subnet between multiple VLANs or even have two VLANs using the same IP subnet for different purposes.

A VLAN is an Ethernet level concept, a subnet is an IP level concept.

A VLAN splits an Ethernet network into multiple logically separate Ethernet networks.

A subnet defines which hosts a host will try to communicate with directly, versus which hosts will need to go via a router. It also defines "network" and "broadcast" addresses.

It is common practice to have a 1:1 mapping between subnets and VLANs, but it is perfectly possible to have multiple subnets on the same VLAN. Equally it is possible to use proxy ARP to split a subnet between multiple VLANs or even have two VLANs using the same IP subnet for different purposes.

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Peter Green
Peter Green
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A VLAN is an Ethernet level concept, a subnet is an IP level concept.

A VLAN splits an Ethernet network into multiple logically seperate Ethernet networks.

A subnet defines which hosts a host will try to communicate with directly verses which hosts will need to go via a router. It also defines "network" and "broadcast" addresses.

It is common practice to have a 1:1 mapping between subnets and VLANs but it is perfectly possible to have multiple subnets on the same VLAN. Equally it is possible to use proxy arp to split a subnet between multiple VLANs or even have two VLANs using the same IP subnet for different purposes.