features are the same: Hop count is still used for the metric, it is still a distance vector protocol,
and it still uses holddown timers and route poisoning. Several features have been added, as
listed in Table 6-14.
be a valid option in modern networks is the support of VLSM by including the subnet mask.
For instance, the problem with RIP-1 and IGRP shown in Examples 6-6, 6-7, and 6-8 was
caused by the lack of this feature. With RIP-2, the problem is removed. The same network
diagram (Figure 6-10) is used in this case. Example 6-9 shows the RIP-2 configuration on each
of the three routers, and Example 6-10 shows a sample RIP debug on Albuquerque.
route so that the subnet is exactly defined.
added feature) can be used to authenticate the source of a
routing update.
address in its routing update
different router on that same subnet. This is done only when the
other router has a better route.
source and redistributed into RIP.
IP address is 224.0.0.9, an IP multicast address. This reduces
the amount of processing required on non-RIP-speaking hosts
on a common subnet.
network 10.0.0.0
version 2
debug ip rip
RIP protocol debugging is on
Albuquerque#
00:36:04: RIP: received v2 update from 10.1.4.252 on Serial0
00:36:04: 10.1.2.0/24 -> 0.0.0.0 in 1 hops
00:36:04: 10.1.5.0/24 -> 0.0.0.0 in 1 hops