CIDR
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... Internet routing system. Before the introduction of CIDR the growth
rate had doubled the size of the routing table roughly every nine
...
...
Classless Inter-Domain Routing (CIDR) [RFC1518, RFC1519] has been
...
... mechanism to contain the growth rate of the routing information -
without CIDR the Internet routing system would have already
...
... prefixes marked as withdrawn). That is roughly a lower bound
since many prefixes are not registered in the IRR. CIDR aggregation
resulted in less than 30,000 routes in the default-free ...
... are not suitable for hierarchical aggregation. Moreover, unconnected
sites with pre-CIDR address allocations exist. If these sites connect
to the Internet ...
...
Recently, especially since the arrival of CIDR, some subscribers and
providers have followed a model in which address space ...
... provider and allocate its
addresses out of the CIDR block associated with the provider. Later
the organization may switch ...
... provider may still be willing to allow the organization to retain
part of the provider's CIDR block, and accept a more specific prefix
for that organization from the new provider ...
... Aggregation of addressing
information (via CIDR) could reduce the cost, as it allows an
increase in the number of destinations covered by a single route ...
... IPv6 address allocation architecture is based on
CIDR, recommendations presented in this document apply to IPv6
address allocation and management policies as well.
...
...
Finally, we like to thank all the members of the CIDR Working Group
for their review and comments.
...
... Fuller, V., Li, T., Yu, J., and K. Varadhan, "Classless Inter-Domain Routing (CIDR): an Address Assignment and Aggregation Strategy", RFC 1519(-> 4632) ...
... Rekhter, Y., and T. Li, "An Architecture for IP Address Allocation with CIDR", RFC 1518hist, September 1993. ...