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Can't ping or access Ethernet interface

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jumper4000

IS-IT--Management
Joined
Apr 20, 2005
Messages
15
Location
US
Hi, I'm working on a 3640 and am trying to configure one of the interfaces with an IP address so I can upload my config file using tftp. After I configured the interface, i connected it to a little 4 port switch and connected my computer to the switch as well. However, when I try to ping the interface, it times out and I can't do any thing. Can anyone tell me what's wrong with this configuration so far? thanks

!
version 12.3
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname Router
!
boot-start-marker
boot-end-marker
!
enable secret 5 (took out)
enable password (took out)
!
no aaa new-model
ip subnet-zero
ip finger
!
!
ip name-server 204.117.214.10
!
ip dhcp pool 1
network 10.10.10.0 255.255.255.0
default-router 10.10.10.1
dns-server 204.117.241.10
!
no ip cef
ip audit po max-events 100
no ftp-server write-enable
!
!
interface Ethernet0/0
ip address 10.10.10.1 255.255.255.0
no ip route-cache
half-duplex
no mop enabled
!
interface Serial0/0
no ip address
no ip route-cache
shutdown
!
interface Ethernet0/1
no ip address
no ip route-cache
shutdown
half-duplex
!
interface Serial0/1
no ip address
no ip route-cache
shutdown
!
interface FastEthernet2/0
no ip address
no ip route-cache
shutdown
duplex auto
speed auto
!
interface FastEthernet2/1
no ip address
no ip route-cache
shutdown
duplex auto
speed auto
!
ip http server
no ip http secure-server
ip classless
!
snmp-server community private RW
snmp-server community public RO
!
dial-peer cor custom
!
!
line con 0
line aux 0
line vty 0 4
password (took out)
login
!
!
end
 
What result if you ping the loopback on the PC 127.0.0.1???
 
pinging 127.0.0.1 works just fine. As suggested before, I even took out the cable from the router, plugged it into another pc, setup the other pc with the same ip as the router, and I'm able to ping both ways. so it's gotta be something with the router.
 
Ok....
When you connect to the other PC you can ping it.
Did you try to connect that other PC to the router and ping the router with that. This would truly eliminate the PC side as the problem. You might see what would happen if you set the interface to speed 10 and half duplex. Probably just a speed or duplex problem.
 
Actually that might be it....

The built-in interfaces on that router are old 10-BaseT and the default is for half-duplex. Try connecting on the fastethernet port or setting the duplex on ethernet 0/0 to full. The interface and protocol will show up but wont talk to each other if mis-matched.
 
I've tried all that. tried from another pc. tried all the other interfaces (there are 4 in total). also tried half as well as full-duplex. all with the same result.
 
When you are connected to the console and plug in the ethernet cable are you getting console messages showing the port status change to up or unplug it and see the console message that the status is down?
 
no, it doesn't really change. at least not that quickly.
 
You should get a pretty rapid response. I tested with a 2611 and had console message almost immediate:
plug in
*Feb 28 16:01:17: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0, c
hanged state to up
unplug
*Feb 28 16:01:37: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0, c
hanged state to down
Sounds like you got a main board problem or something hosed up in the IOS itself. Maybe erase IOS and reload from ROMMON.
 
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