Cannot use RIPv2 with VLSM even with no auto-summary

[aryspoty]

Hello, I have an assignment where I have to route 3 routers that uses VLSM with RIPv2, ive assigned all the IPs needed to the pc and router, but I can't route with RIP

for example, when I try using RIP in router 2 and typed 198.66.66.160, it converted it to 198.66.66.0, so if I try adding another NA, for example 198.66.66.176, it wont add it.

I typing version 2 and

no auto-summary

to the router RIP CLI, but the same problem still occurs

Please check the file if I did anything wrong

[MHM Cisco World]

I can not open file but 

show ip route

 
check the subnet for each interface is it match the

network 

command mask or not ?

[aryspoty]

yes I've checked all 3 routers with

show ip route

  and all of the interface have the correct network address

[paul driver]

Hello

---

@MHM Cisco World wrote:

I can not open file but 

show ip route

 
check the subnet for each interface is it match the

network 

command mask or not ?

---

Wont be applicable in RIP by design

[MHM Cisco World]

@paul driver is right, I run small lab, 
the route show classfull when I do show running 
but in other router when I do

show ip route

 I see correct classless subnet. 

so @paul driver is totally right.

thanks.

[aryspoty]

the subnet mask for 198.66.66.160 is 255.255.255.248

here is the screenshot of

show ip route

[paul driver]

Hello

---

@aryspoty wrote:
for example, when I try using RIP in router 2 and typed 198.66.66.160, it converted it to 198.66.66.0, so if I try adding another NA, for example 198.66.66.176, it wont add it.

---

RIPv2 with auto summarization turned off VSLM is supported so classless advertisement of networks is allowed, meaning the correct VLSM subnet will be advertised in the network, however both RIP version1/2 will always default to its classful subnet (A,B,C)within it routing stanza, which cannot be changed, so what you see is correct.

[aryspoty]

oh okay, but for some reason, its unable to ping to external network block, actually, only 2 network block are connected and the others aren't, you can see which one is connected with this image

[paul driver]

Hello
Looks like you DONT have overlapping subnets but you need to make sure, plus all rtrs running rip will also need to be running RIP2 with auto summarization disabled.

/26
.0
.64

/27
.128

/29 
.160
.168
.176

[MHM Cisco World]

check NA in all router, do you see it ?

[aryspoty · Accepted solution]

turns out i actually got the connection in 'Router 2' switched, it is now fixed, thanks for the help