Hi group,
     I set up a Lab to highlight the problem that
discontiguous networks brings to distance vector
protocols. I seperated three Class B networks
(172.16.1.0/24, 172.16.2.0/24, 172.16.3.0/24) with the
class C networks (192.168.1.4/30 & 192.168.1.8/30).

As expected with RIP 1, I can clearly see network
172.16.0.0/16 being advertised over the serial
interfaces, with 'debug ip rip'. 

I then configured the Lab for RIP 2 thinking that this
would be a solution to the problem, since RIP 2
advertises the subnet mask with the network address,
but ran up against the same problem as RIP 1.

I can solve the problem using secondary addresses,
however, I feel that RIP 2 should also solve the
problem. 

Am I missing something here ?

Just thinking out loud, should I have put 'no
auto-summary' under the rip routing ? maybe it
defaults to classful behaviour anyway !!!

Appreciate any responses.

Phil.

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