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Why does wildcard mask do more than subnet mask ???

gdamville
Occasional Contributor

Why does wildcard mask do more than subnet mask ???

Why does wildcard mask do more than subnet mask ???

4 REPLIES
manuel.bitzi
Trusted Contributor

Re: Why does wildcard mask do more than subnet mask ???

What do you mean exactly?

In which case? And what should be different?

H3CSE, MASE Network Infrastructure [2011], Switzerland
gdamville
Occasional Contributor

Re: Why does wildcard mask do more than subnet mask ???

What does wildcard mask bring more than subnet mask ? Why subnet mask is not self-sufficient ?

manuel.bitzi
Trusted Contributor

Re: Why does wildcard mask do more than subnet mask ???

wildcard-bits and subnetmask are two things.

 

IP+Subnetmasks = Range of Subnets

IP+Wildcard-Bits = Range of Hosts

 

br

Manuel

H3CSE, MASE Network Infrastructure [2011], Switzerland
paulgear
Esteemed Contributor

Re: Why does wildcard mask do more than subnet mask ???

Subnet masks must be contiguous; wildcard masks need not be. This makes them useful in some ACLs, e.g. to create exclusions for a particular address offset in a number of subnets.
Regards,
Paul