Tftp from within cisco 837 adsl modem

stewartrose · ‎07-14-2010

Good Morning Team,

I have a problem where I am in the console of the modem performing a backup of the running-config via tftp, the tftp program is seeing the file and cannot determin the size so times out.. and I cannot see why, could you look please at the config...

Thanks in advance from Alan

Current configuration : 2107 bytes
!
version 12.2
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname streetrun
!
enable secret 5
enable password *************
!
ip subnet-zero
no ip routing
ip name-server 212.23.x.x
ip name-server 212.23.x.x
ip dhcp excluded-address 192.168.3.1
!
ip dhcp pool home-network
   import all
   network 192.168.3.0 255.255.255.0
   default-router 192.168.3.1
!
ip audit notify log
ip audit po max-events 100
!
!
!
!
interface Ethernet0
ip address 192.168.3.1 255.255.255.0
ip access-group 100 in
no ip proxy-arp
ip nat inside
no ip route-cache
no cdp enable
hold-queue 100 out
!
interface ATM0
no ip address
no ip redirects
no ip unreachables
no ip route-cache
shutdown
no atm ilmi-keepalive
pvc 0/38
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
dsl operating-mode auto
dsl power-cutback 0
!
interface Dialer0
ip address negotiated
ip access-group 111 in
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat outside
encapsulation ppp
dialer pool 1
dialer-group 1
no cdp enable
ppp authentication chap callin
ppp chap hostname ***********
ppp chap password 0**********
!
ip nat inside source list 1 interface Dialer0 overload
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0
no ip http server
!
!
access-list 1 permit 192.168.3.0 0.0.0.255
access-list 100 permit udp host 0.0.0.0 host 255.255.255.255
access-list 111 permit udp any host 192.168.3.1 eq tftp
access-list 111 permit tcp any host 192.168.3.1 eq ftp
access-list 111 permit tcp any host 192.168.3.1 eq www
access-list 111 permit tcp any host 192.168.3.1 eq 443
access-list 111 permit tcp any host 192.168.3.1 eq 22
access-list 111 permit tcp any host 192.168.3.1 eq smtp
access-list 111 permit tcp any host 192.168.3.1 eq pop3
access-list 111 deny   ip any any log
dialer-list 1 protocol ip permit
no cdp run
!
line con 0
no modem enable
stopbits 1
line aux 0
line vty 0 4
password **********
login
!
scheduler max-task-time 5000
end

John Blakley · ‎07-15-2010

Have you tried another tftp program? There's not anything in the running config that would cause you not to be able to back up to a tftp server.

John

HTH, John *** Please rate all useful posts ***

stewartrose · ‎07-15-2010

Hi John,

No I had not, but before replying to you, I went and got an other program and it did the same thing, what is going through my mind would it be a problem with the high order ports, like ftp uses high order ports to, other than that I cannot think of anything else...

All the best from Alan

John Blakley · ‎07-15-2010

I would try taking off the acl on your inside interface and then see if it works....

John

HTH, John *** Please rate all useful posts ***

stewartrose · ‎07-15-2010

Hi John,

This is mad, still no joy, you can see the 837 talking to the tftp server, it has the file name there, it just says 0 bytes, timeout error.

But as a side comment from with the modem it self eg console control should I not be able to ping the pc on 192.168.3.2

All the best from Alan

John Blakley · ‎07-15-2010

Do you have a firewall enabled on that system?

HTH, John *** Please rate all useful posts ***

stewartrose · ‎07-15-2010

Hi John,

Nope it is xp pro bare system it just has securecrt on it so I can talk to the console, no virus scanner and firewall is off, but all updates was done..

All the best from Alan

John Blakley · ‎07-15-2010

How is the computer connected to the router? Can you ping the router from the pc and vice versa? If you try to ping the pc from the router, try sourcing the ethernet interface (ping source eth0).

Oh, and what tftp server are you running? Try tftpd32. It's free.

HTH, John *** Please rate all useful posts ***

stewartrose · ‎07-15-2010

Hi John,

Well I am using solarwinds, I used the one you are talking about untill you told me to try an other, I cannot ping from pc to modem or modem to pc.

I plugged the pc into the internet router, and it all worked fine I used the same cable to plug into the 837

All the best from Alan

John Blakley · ‎07-15-2010

Ah...you don't have the computer connecting to a switch? If you have it connected directly to the router, you'll need a crossover cable. Can you post "sh int eth0"?

HTH, John *** Please rate all useful posts ***

John Blakley · ‎07-15-2010

Is this your router? If so, it has a builtin switch which means you should be able to just use your regular cable....

http://cisco.biz/en/US/docs/routers/access/800/837/hardware/installation/guide/overview.html

HTH, John *** Please rate all useful posts ***

John Blakley · ‎07-15-2010

I think I see the problem.....try to run "ip routing" at the cli....see if that helps.

HTH, John *** Please rate all useful posts ***

stewartrose · ‎07-15-2010

Hi John,

Sorry this is given you a headache, I tried cross over cables, even rebooted everything to be on the safe side, even added the "ip routing" and changed cables back, and still the same...

All the best from Alan

stewartrose · ‎07-15-2010

Hi John,

This is going to sound dum perhaps but I just really taken notice as I have 2 of these 837 adsl modems, and the other is down stairs working fine.

But on this one though it has 4 ports on back it does not say it in the software listing, where as my other one says there is 4 Fastethernets

This one says CPU Rev Number 7

Bridgeing Software

1 Ethernet/IEEE 802.3 interface(s)

1 ATM Network interface..

Then the memory...

Does that throw any light on the problem...

All the best from Alan

John Blakley · ‎07-15-2010

Do you have that model that I sent you a link for? That's what was confusing me because you should show 4 interfaces in your running config whether something is connected to them or not. You may have a faulty router....

HTH, John *** Please rate all useful posts ***