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TOPIC: wildcard mask

wildcard mask 8 years 2 months ago #26642

  • XYZ
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what is the advantage of using te wild card masks instead of regular network mask?
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Re: wildcard mask 8 years 2 months ago #26647

  • SteveP
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They are used for different aspects of networking.

The network mask is used to determine which subnetwork a host is on and a wild card mask is used when configuring access control lists. The network mask has a form such as 255.255.240.0 whilst a wild card mask has a form such as 0.0.0.31.
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Re: wildcard mask 8 years 2 months ago #26652

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.... wild card mask has a form such as 0.0.0.31.

being the opposite of 255.255.255.255 to allow the route. When you come to access lists, you'll get this.

<Just for clarification SteveP .. pls excuse>
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Re: wildcard mask 8 years 2 months ago #26655

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<Just for clarification SteveP .. pls excuse>
NP - I was making the point that the network mask has 255 in the leftmost octet(s) whilst a wildcard mask has 0 in the leftmost octet(s). Having said that, I suppose that a wildcard mask *could* be something like 31.255.255.255, but that's beyond the OP.

I agree that when XYZ has covered access lists, all will become clear.
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