NETBuilder Support for CIDR
Support for CIDR has been implemented on the NETBuilder:
- NETBuilder software implements BGP-4. Support for CIDR is a significant part of the improvements made to BGP-4.
- NETBuilder software uses a routing table structure that understands a network number advertised with a prefix that is shorter than the natural mask. The NETBuilder’s routing table and forwarding process ignore the traditional IP address Class and are capable of accepting any network/mask combination that it receives.
- NETBuilder software is capable of performing aggregation by way of BGP-4 configuration parameters. Also, the OSPF AreaRange parameter allows VLSM-based aggregation to be performed within an autonomous system. The network administrator may specify exactly what network numbers and masks are advertised outside of each area or domain.
Additional Practice with CIDR
Please turn to Appendix E for several practice exercises to reinforce your understanding of CIDR.
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