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Why OSPF use wildcard mask? Not subnet mask?

Why OSPF use wildcard mask? Not subnet mask? Any advantage of using wildcard in OSPF? How wildcard in OSPF work? I saw some OSPF configuration for class b network use 0.0.0.255 as an OSPF wildcard mask. What does it mean? Is that mean to exchange only route information for the subnetwork?

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Re: Why OSPF use wildcard mask? Not subnet mask?

hello,

with the use of a wild-card mask we can gain control over route update propagation.So we can define which networks should receive updates and which networks should not receive routing updates.Its just like wildcard masks used in ACLs.this is my view

cheers,

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