Term
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Definition
| classless interdomain routing. Classless routing protocols based on route aggregation. CIDR allows routers to group routes together to reduce the quantity of routing information the core routers carry. With CIDR IP address and subnet masks are written as four octets, followed by prefix. |
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Term
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Definition
| A route that a device will automatically select if you do not specify a substitute. |
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Term
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Definition
| consolidation of advertised addresses in OSPF and IS-IS. In OSPF, this causes a single summary route to be advertised to other areas by an area border router. |
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Term
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Definition
| A route that is fixed and not capable of action or change. |
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Term
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Definition
| Aggregating IP network addresses advertised as a single classless network address. |
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Term
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Definition
| Variable-length subnet mask. The ability to specify a differnt subnet mask for the same network number on different subnets. VLSM helps optimize available address space. |
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