Rip 1 Route Interpretation; Rip Version 2 Extensions; Rip2 Message Format - D-Link DES-6500 User Manual

D-Link DES-6500 Layer 3 Stackable Gigabit Ethernet Switch
Family of Source Network field (IP has a value of 2). This will determine how the address
field is interpreted.
RIP specifies that the IP address 0.0.0.0 denotes a default route.
The distances, measured in router hops are entered in the Distance to Source Network, and
Distance to Destination Network fields.

RIP 1 Route Interpretation

RIP was designed to be used with classed address schemes, and does not include an explicit
subnet mask. An extension to version 1 does allow routers to exchange subnetted addresses,
but only if the subnet mask used by the network is the same as the subnet mask used by the
address. This means the RIP version 1 cannot be used to propagate classless addresses.
Routers running RIP version 1 must send different update messages for each IP interface to
which it is connected. Interfaces that use the same subnet mask as the router's network can
contain subnetted routes, other interfaces cannot. The router will then advertise only a single
route to the network.

RIP Version 2 Extensions

RIP version 2 includes an explicit subnet mask entry, so RIP version 2 can be used to
propagate variable length subnet addresses or CIDR classless addresses. RIP version 2 also
adds an explicit next hop entry, which speeds convergence and helps prevent the formation of
routing loops.

RIP2 Message Format

The message format used with RIP2 is an extension of the RIP1 format:
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