Newbie: Cisco Routing Subnet Zero - Inconsistent Address and Mask

Hi,

Looks to me like you are not putting the correct route statement in, however:

If the networks 192.168.2.0 + 192.168.1.0 are directly connected to the router then you dont need to add a route statement. But if its not then your route statement would look like this: ip route 192.168.2.0 255.255.255.0 [interface]

If you type: "show ip route" What is the output of the command.

Do you have an extra WIC-1ENET on the 1721 and where is the switch connected to?

Regards,

Rob

The "inconsistent address and mask" message means that the address part of a static route included some bits that are masked off by the mask. E.g.

ip route 192.168.2.1 255.255.255.0 ...

the .1 at the end of the address is masked off by the .0 in the mask. This is an error check that Cisco added, to catch cases where you used a too-large mask. The correct statement would be:

ip route 192.168.2.0 255.255.255.0 ...

But, as the other poster said, you don't need to create static routes for subnets that are ddirectly connected to the router.

You're not using the zero subnet, so why do you think this is relevant? In fact, you're not using *any* subnets, you're using ordinary class C address blocks.

Thanks for your help. The main problem I was having was not knowing about the interface part of the ip route statement, and I was trying to figure out the ip address of the interface rather than the name. Anyhow, despite a crash of the IOS which had to be reinstalled, I have now got it working as I wanted it to be working.

Thanks for your help.