Setting up TFTP

[TSupportEngineer]

Hi all. I have set up a 2500 series router to practice saving/loading images. The workstation IP is 192.168.1.10, the e0 is 192.168.1.11. The subnet mask is 255.255.255.0. The workstation is connected to the router to the e0 interface through a crossover cable and a tranceiver. The e0 interface is up/up. IP is running, as is RIP v1. I can't ping the workstation either with the crossover or a straight-through cat5 cable so I do not have a connection. I have Cisco's TFTP server on the workstation, but not being able to ping, I'm stuck (I can ping the e0 interface from the console and ping the workstation IP from the workstation). Any ideas? Thanks.

 

[burtsbees]

Can you ping the router from the workstation? Also, if it's XP or Pissta...Vista, I mean (lol), make sure Windows Firewall is turned off---it defaults to block ip echoes and echo responses.

Burt

 

[burtsbees]

By the way, crossover is correct, unless you go through a switch or a hub...then it's straight through. Check the cable also.

Burt

 

[TSupportEngineer]

Hi Burt, can't ping the workstation from the router and vice versa, but each can ping itself. The only connection is the workstation to e0. The cable is a crossover. Using a Class C to prevent subnet issues. Still banging away at it.

 

[plshlpme]

can you post the router config?
it all sounds correct and simple enough..
but it would be better to see with our own eyes

since you can ping yourself on both devices i assume the link is up.. now how about duplex settings.. the 2500 is a 10/half device. can you make sure your pc isn't hard coded for something else that may be messing with the connection..

also on the router.. when you do a

sho int e0

do you see errors?

does the interface flap or stay up?
on the router it wouldnt hurt to put a default route to the pc as well since its the only connection to your lan.

 

[TSupportEngineer]

Hi and thanks, plshlpme. The interface does not flop, and no errors on sho int. See below. Again the only connection is Router to workstation via e0. I am going to try changing the xover cable, just in case. Thanks again for your time.

2511#sho run
Building configuration...

Current configuration:
!
version 11.2
no service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname 2511
!
enable secret 5 $1$Da4r$8iNFSEfCj7wF0DluqiuL50
enable password class
!
!
interface Ethernet0
ip address 192.168.1.11 255.255.255.0
no ip route-cache
no ip mroute-cache
!
interface Serial0
no ip address
no ip route-cache
no ip mroute-cache
!
interface Serial1
no ip address
no ip route-cache
no ip mroute-cache
!
router rip
network 192.168.1.0
!
no ip classless
!
!
line con 0
exec-timeout 0 0
line 1 16
transport input all
flowcontrol hardware
line aux 0
transport input all
line vty 0 4
password cisco
login
!
end

2511#
2511#sho int e0
Ethernet0 is up, line protocol is up
Hardware is Lance, address is 0000.0c0a.4b14 (bia 0000.0c0a.4b14)
Internet address is 192.168.1.11/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load 1/255
Encapsulation ARPA, loopback not set, keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:03:44, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
1 packets input, 250 bytes, 0 no buffer
Received 1 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 input packets with dribble condition detected
44 packets output, 3869 bytes, 0 underruns
0 output errors, 0 collisions, 3 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
2511#

 

[burtsbees]

I would say firewall or cable.

Burt

 

[voltron1011]

I'm with Burt, Sounds to me like there's a firewall running on the PC.. Make sure Windows XP firewall is OFF. XP defaults with firewall enabled. Double check your subnet-mask on both devices...

 

[burtsbees]

If the router is connected to the internet, and you can get to the internet through the router via another protocol other than icmp (like http), but you cannot ping the router, it most certainly is a firewall.

Burt

 

[burtsbees]

Gosh---the reason for my last reply was to tell voltron1011 good call on the subnet mask!

Burt

 

[TSupportEngineer]

Thanks Voltron and Burt, still working on it, the PC is a standalone, running (are you sitting down?) NT 4.0 Server. No connection to the Internet, just a field expediant method for quickly checking an IOS or ports. I think I may go the server>hub/switch>router route to try.

 

[Minue]

Hello Guys
Take a look at this line "1 packets input, 250 bytes, 0 no buffer"
The router isn't recieving packets from the work station.This is a Level 1 problem!Change the cable,check the NIC.Also try using a different PC.
Regards

 

[voltron1011]

Do you have a cable-tester to make sure that your x-over cable is truly correct. I've screwed up a couple of crossover cables in the past where everything was showing up/up, however after testing the cable it was found that I had somehow mismatched wires 4 and 5.

 

[burtsbees]

Don't forget---the pc gets connected to the switch with a straight thru, and from the switch to the router is straight thru. In 10/100MBps, wires 4,5,7 and 8 do not count---only in full duplex gigabit ethernet, but good point.

Burt

 

[jneiberger]

Did you ever check your firewall?

Try to ping the workstation from the router. It will fail. Then do a "show arp" on the router to see if you have a MAC address listed for the PC in the ARP cache. If you do then you know your connectivity is good and you have some other issue, like a firewall blocking ICMP traffic. If you don't have anything in the cache then the PC isn't even answering to ARP requests, which indicates some other sort of problem.

 

[TSupportEngineer]

Hi all and thanks for the continued help. Here's the "network":
Workstation > crossover cable > Ethernet0 (router)
I pinged the workstation from the router, but got no replies. Used new crossover cable out of the bag. Added a route to the workstation but am getting "The route addition failed: 87" which means a subnet conflict. The workstation is 192.168.1.10 255.255.255.0. The router is 192.168.1.11 255.255.255.0. Don't see the conflict. Not using a switch.

 

[jneiberger]

You don't need to add any routes for this to work. All necessary routes will already be in the routing table.

I ask once again: DID YOU CHECK YOUR FIREWALL?

 

[TSupportEngineer]

jn, no firewall, this is an NT server on a (!) 200MHZ processor. Good enough for practicing (if I can get the @$# to work). Maybe I just need to use another pc.

 

[burtsbees]

Do sh ip rou in the router. Also, do sh run and sh int.

Burt

 

[jneiberger]

Did you try to ping the server and then check the ARP cache on the router as I suggested? If so, what did you find? Was it able to resolve a MAC address or was it listed as incomplete?