?– The maximum allowable hop count is 15.
?– Routing updates are broadcast every 30 seconds by default.
?– RIP is capable of load balancing over as many as 16 equal-cost paths. (Four paths is
the default.)
Because of the characteristics of RIP, it always chooses the route with the least number of
hops. This is not always, however, the best route, as is shown in Figure 5-44.
S0/0/0
Fa0/0 0
0
Routing Table Routing Table Routing Table
10.1.0.0
10.2.0.0 S0/0/1
S0/0/0 0
0
10.2.0.0
10.3.0.0 Fa0/0
S0/0/0 0
0
10.3.0.0
10.4.0.0
S0/0/0
S0/0/0 1
2
10.3.0.0
10.4.0.0 S0/0/0
S0/0/1 1
1
10.4.0.0
10.1.0.0 S0/0/0
S0/0/0 1
2
10.2.0.0
10.1.0.0
A B C Fa0/0 S0/0/0
10.1.0.0 10.2.0.0 10.3.0.0 10.4.0.0
S0/0/0
S0/0/1 Fa0/0
S0/0/0
402 Chapter 5: WAN Connections
Figure 5-44 RIP Uses Hop Count
RIPv1 and RIPv2 Comparison
RIP has been around for a long time, but recently RIP version 2 was created to allow for
more ?¬‚exibility with addressing. Both routing protocols are still distance vector, but the
versions have a number of differences. Table 5-7 outlines those differences.
De?¬?ning the maximum number of parallel paths allowed in a routing table enables RIP load
balancing. With RIP, the paths must be equal-cost paths.
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