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VLSM vs CIDR ???

VLSM vs. CIDR? How they are different or related?

1 REPLY
Purple

Re: VLSM vs CIDR ???

They are somewhat related but still quite different:

VLSM allows a single major (i.e. classful) network to be subnetted using multiple subnet masks.

CIDR allows summarisation at any bit boundary, even if it results in a large network than is possible using classful networks. For example, you could summarise networks 172.16.0.0/16 and 172.17.0.0/16 into 172.16.0.0/15.

Paresh

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