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Router to Router connection and config

Hello, I am trying to connect and configure two Cisco 1721 routers together using a crossover cable from E0 to E0 but no matter what I do I get "line protocol is down". I have verified that both are using the same encapsulation types with show ip int brief. Below are the configs. I thought this would be simple but apparently not :( Anyone have any advice? (PS I pruned the configs to show only relative lines)

RouterA#show run
Building configuration...
!
interface Ethernet0
ip address 10.0.0.2 255.0.0.0
half-duplex
!
interface FastEthernet0
no ip address
shutdown
speed auto

--------------------------------------...

RouterC#show run
Building configuration...

!
interface Ethernet0
ip address 10.0.0.1 255.0.0.0
half-duplex
!
interface FastEthernet0
no ip address
shutdown
speed auto

RouterC#show ip int brief
Interface IP-Address OK? Method Status Protocol
Ethernet0 10.0.0.1 YES manual up down
FastEthernet0 unassigned YES manual administratively down down

-------

Also, I am getting this message every xx seconds:

%PQUICC_ETHER-1-LOSTCARR : Unit [dec], lost carrier. Transceiver problem?

Cisco's website of course says this:
" Explanation The Ethernet 10BASE-T cable is unplugged.
Recommended Action Reconnect the 10BASE-T Ethernet cable."

However, I am not sure if is referring to the FastEthernet0 port that is unplugged or to the Ethernet0 that I am trying to connect. The Crossover cable I am using to directly connect the two routers looks correct and was tested with a Fluke.
Any suggestions?

that1guy15

I wonder if you have a bad port on one of the two devices.

Have you tried issuing a "shut" then a "no shut" on both ethernet interfaces? Also have you tried rebooting the routers?

You can also try using the fastEthernet interfaces instead.

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MrJemson

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JackAssOfAllTrades

ASKER

Thank you, I did 'accidentally' put the cable on the fa0 ports while configuring the e0 ports. I didn't expect the card in the "WAN" expansion port to be e0 but it was! Thanks~