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Inconsistent address and mask while trying to route three routers

thinkx
Level 1
Level 1

Hello all,

I'm well aware that there are dozens of topics handling the same problem but I'm stuck with it for over 3 hours now - I see no other way than asking this question right here.

 

I am doing a lab exercise, and I got this typologoy (see attachment).

 

My first exercise was the following:

Configure interfaces for R1-3. Allocate disjoint addresses for every network segment, the information about interface addressing is listed below:

R1(FastEthernet0/0) in the network 10.0.1.1/24
R2(FastEthernet1/0) in the network 10.0.2.1/24
R3(FastEthernet0/1) in the network 10.0.3.1/24
R1(FastEthernet0/1) in the network 10.0.100.1/24
R2(FastEthernet0/0) in the network 10.0.100.2/24
R2(FastEthernet0/1) in the network 10.0.200.1/24
R3(FastEthernet0/0) in the network 10.0.200.2/24

 

Which I did. Now I have to "Configure routing between R1-3."

 

See now this is what I tried:

R1(config)#ip route 10.0.1.1 255.255.255.0 10.0.100.2

I want to route R1 to R2, R1 to R3 and R2 to R3, on the FastEthernet0/0 interface.

As well as the same on the FastEthernet0/1 interface.

 

But just after I tried the first command I got this:

%Inconsistent address and mask

It might be that I understand this "Configure routing between R1-3"wrong?

Has it something to do with the subnet mask?

I seriously wasted so much time thinking about this but couldn't get further. Please enlighten me. Thanks.

1 Reply 1

Hello @thinkx

First you put the demore route then the interface.

 

R1(config)#ip route 10.0.200.0 255.255.255.0 10.0.1.1

Apply the same rule to others

 

-If I helped you somehow, please, rate it as useful.-