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Examples of route aggregation

# Examples of route aggregation - Examples of route...

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Examples of route aggregation. The goal of route aggregation is to reduce the number of network entries in routers. However, the aggregation must satisfy two requirements: 1. The aggregation must not overclaim, i.e., including IP networks that are not in your domain. Otherwise, some IP packets will route to the router and it cannot find the destination in its aggregated network addresses. 2. The aggregation must not underclaim, i.e., excluding IP networks in your domain. Otherwise, some IP packets will not be routed to the router and they cannot reach their destinations. The solution of route aggregation for a given set of network address is unique: In the follows, we present several examples. #1 Given the following 8 networks: Subnet#14-14-0: 10001100.00011001.11101110 . 000 00000 = 140.25.238.0/27 Subnet#14-14-1: 10001100.00011001.11101110 . 001 00000 = 140.25.238.32/27 Subnet#14-14-2: 10001100.00011001.11101110 . 010 00000 = 140.25.238.64/27 Subnet#14-14-3: 10001100.00011001.11101110 . 011 00000 = 140.25.238.96/27 Subnet#14-14-4: 10001100.00011001.11101110 . 100 00000 = 140.25.238.128/27 Subnet#14-14-5: 10001100.00011001.11101110 . 101 00000 = 140.25.238.160/27 Subnet#14-14-6: 10001100.00011001.11101110 . 110 00000 = 140.25.238.192/27 Subnet#14-14-7: 10001100.00011001.11101110 . 111 00000 = 140.25.238.224/27 In the above 8 networks, the aggregation is: 10001100.00011001.11101110 . 000 00000 = 140.25.238.0/24 This network will include all 8 subnets, no more, no less.

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