ip routing not enabled

Z3-Masterd

For some reason whenever I enter "router rip" on global config mode, I get the error msg "IP routing not enabled" Why is this ?

david_r

post your config

does it contain"no ip routing"?

Z3-Masterd

enable password 654
!
no ip routing
!
interface Serial0
no ip address
no ip mroute-cache
no ip route-cache
shutdown
!
interface Serial1
no ip address
no ip mroute-cache
no ip route-cache
shutdown

I have an IP + mask assigned to Serial0 though

dmaftei

Z3-Masterd wrote:

enable password 654
!
no ip routing <---- you don't want this here...
!
...

Z3-Masterd

K, I went through setup and enabled RIP on the Serial0 interface. Here is the new config

!
interface Serial0
ip address 192.168.1.1 255.255.255.0
no ip mroute-cache
bandwidth 64000

However, I'm still getting this:

Toes#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Serial0 192.168.1.1 YES manual down down


Eh?

david_r

What's it hooked to? Your layer one and layer two are down.

Z3-Masterd

Interface IP-Address OK? Method Status Protocol
Serial0 192.168.1.1 YES manual down down

So if status is Down, and Protocol is Down, I suppose that means the cable is bad / not connected, and there is no routing protocol enabled on the interface ?

dmaftei

Z3-Masterd wrote:

So if status is Down, and Protocol is Down, I suppose that means the cable is bad / not connected

That's correct.

Z3-Masterd wrote:

and there is no routing protocol enabled on the interface ?

No, protocol is down does not refer to a routing protocol.

Z3-Masterd

What does 'Protocol is down' refer to ?

dmaftei

It refers to the line protocol. If you want to understand this stuff read about HDLC and PPP. If all you want is a live serial connection, your cable must be connected at both ends, and you must set the clock at one end; go to www.cisco.com and search for "HDLC back-to-back".

david_r

And the cable end connected to the router with the clockrate setting must be the DCE end.

Jammywanks

Enabling ip routing is pretty simple, yet I am very concerned why my CCNA book did not mention ANYTHING about even checking to see if its enabled before they talk about rip, etc. I understand ip routing is enabled by default, but they never get into the fact incase someone disables it, and how to reenable ip routing, when the command is simply "(config)# ip routing" (!!!!)

I got my 1720 from ciscokits and they never cleared the previous config. I was messing around and came across the same issue. I googled it up and found out that to enable it I just typed "ip routing". As soon as I did this, router rip allowed me to configure rip routing.