Deaggregation

From NANOG

Deaggregation is the act of breaking a large allocated IP prefix into smaller prefixes and then announcing them to the global Internet. This is not without contoversy, as it is acts counter to the goals of CIDR.

Deaggregation proponents claim

• this provides a global method of traffic engineering for specific prefixes
• this protects the network sourcing deaggregate prefixes from prefix hijacking

Deaggregation opponents claim

• the set of all possible routing policies on the global internet is too vast to assume that deaggregate prefixes will always be carried
• this is a case of the tragedy of the commons, where the commons in question is the global routing table, and the benefit is solely to the network sourcing deaggregate prefixes at the expense of all members of the default-free zone