Chapter 7. Routing Information Protocol Version 2
Operation of RIPv2
RIPv2 Message Format Compatibility with RIPv2 Classless Route Lookups Classless Routing Protocols Variable-Length Subnet Masking Authentication
Configuring RIPv2
Case Study: A Basic RIPv2 Configuration Case Study: Using VLSM Case Study: Discontiguous Subnets and Classless Routing Case Study: Authentication
Troubleshooting RIPv2
Case Study: Misconfigured VLSM
RIPv2 is defined in
RFC 1723 and is supported in IOS versions 11.1 and later. RIPv2 is not a new protocol; rather, it is RIPv1 with some extensions to bring it more up-to-date with modern routing environments. These extensions are:
Subnet masks carried with each route entry Authentication of routing updates Next-hop addresses carried with each route entry External route tags Multicast route updates
The most important of these extensions is the addition of a Subnet Mask field to the routing update entries, enabling the use of variable-length subnet masks and qualifying RIPv2 as a classless routing protocol.
RIPv2 is the first of the classless routing protocols discussed in this book. As such, this chapter serves as an introduction to classless routing, as well as to RIPv2.
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