What Is Variable Length Subnet Mask Vlsm

What Does Variable Length Subnet Mask (VLSM) Mean?

Techopedia Explains Variable Length Subnet Mask (VLSM)

• Simple network configurationNetwork IP addressing through empty subnet fillingGreater efficiency than fixed-length subnet masks (FLSM)Streamlined routing, where a router functions only with a VLSM sequence, versus a full IP address

• Intermediate System to Intermediate System Protocol (IS-IS)Border Gateway Protocol (BGP)Enhanced Interior Gateway Routing Protocol (EIGRP)Cisco’s Open Shortest Path First (OSPF)