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2621XM Query

surfthegeckosurfthegecko Member Posts: 149
Hi,

I am having trouble backing up the IOS image from my new 2621XM router to my pc.

Currently my PC has the following connections:
192.168.1.1 /24 - Wireless connection to the internet
192.168.1.30 / 24 - PC ethernet to 2621XM router

The router is connected via console cable and via fa 0/0 to my pc with an interface IP of:
192.168.1.20 /24

My PC can Ping the following:
192.168.1.1 /24 - PC Wireless adapter
192.168.1.30 /24 - PC ethernet connection to Router
192.168.1.20 /24 - Router connection to PC ethernet port

My Router can ping itself on 192.168.1.20 /24 but cannot ping my pc.

I have made sure that Port 69 is open on my PC but still no luck.

Until my Router can ping my pc I cannot use TFTP.

Any ideas?
Thanks

Comments

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    dynamikdynamik Banned Posts: 12,312 ■■■■■■■■■□
    Did you also allow ICMP on your PC's firewall?

    Maybe it is making the connection, but your server is misconfigured. Have you looked at its logs at all?
  • Options
    surfthegeckosurfthegecko Member Posts: 149
    Dynamik,

    I checked and the current settings for ICMP are configured on my firewall:

    ICMP DEstination Unreachable (in) is allowed
    ICMP Echo Reply (in) is allowed
    ICMP Time Exceeded (in) is allowed
    Any incoming ICMP is not allowed.

    I think this would be okay?
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    dynamikdynamik Banned Posts: 12,312 ■■■■■■■■■□
    I would assume the echo reply is what you need.

    Do you have another PC you can use to try to ping it? That would be an easy way to isolate the problem.
  • Options
    surfthegeckosurfthegecko Member Posts: 149
    Actually for some reason I cant ping the routers interface from my pc now:
    192.168.1.20

    I think I have been trying to tweak this in so many ways i may have made it worse.
    Maybe my tweaking eg rip/default gateway settings made this worse?

    Show Run is attached, got a forbidden error when trying to paste this into the reply window.
  • Options
    dynamikdynamik Banned Posts: 12,312 ■■■■■■■■■□
    It's not going to be a problem with routing or the default route since they're on the same subnet.

    What does show interface fastethernet0/0 give you?

    You said you're connecting the router to your PC's NIC? Are you using a crossover cable? Like devices require a crossover (unless they support auto-MDIX).

    I've had problems posting configs too. The security's pretty tight here now, and some innocuous things might trigger SQL injection warnings.
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    surfthegeckosurfthegecko Member Posts: 149
    The cable would definately appear to be crossover, i just double checked the PINs.
    Attached is the 'show int fa 0/0' line and protocol are showing as up.
  • Options
    kalebkspkalebksp Member Posts: 1,033 ■■■■■□□□□□
    Dynamik,

    I checked and the current settings for ICMP are configured on my firewall:

    ICMP DEstination Unreachable (in) is allowed
    ICMP Echo Reply (in) is allowed
    ICMP Time Exceeded (in) is allowed
    Any incoming ICMP is not allowed.

    I think this would be okay?

    You need to allow echo requests. The router sends an echo request, the computer responds with an echo reply.
  • Options
    dynamikdynamik Banned Posts: 12,312 ■■■■■■■■■□
    kalebksp wrote: »
    You need to allow echo requests. The router sends an echo request, the computer responds with an echo reply.

    Oh, that must be something you learn in CCNP studies... icon_redface.gificon_lol.gif
  • Options
    tim100tim100 Member Posts: 162
    Hi,

    I am having trouble backing up the IOS image from my new 2621XM router to my pc.

    Currently my PC has the following connections:
    192.168.1.1 /24 - Wireless connection to the internet
    192.168.1.30 / 24 - PC ethernet to 2621XM router

    The router is connected via console cable and via fa 0/0 to my pc with an interface IP of:
    192.168.1.20 /24

    My PC can Ping the following:
    192.168.1.1 /24 - PC Wireless adapter
    192.168.1.30 /24 - PC ethernet connection to Router
    192.168.1.20 /24 - Router connection to PC ethernet port

    My Router can ping itself on 192.168.1.20 /24 but cannot ping my pc.

    I have made sure that Port 69 is open on my PC but still no luck.

    Until my Router can ping my pc I cannot use TFTP.

    Any ideas?
    Thanks

    Just do it the other way around and configure the tftp-server on the router:

    conf t
    tftp-server flash:name of image.bin
  • Options
    NetwurkNetwurk Member Posts: 1,155 ■■■■■□□□□□
    Here's what caught my eye in your firewall config:
    Any incoming ICMP is not allowed.

    That means your PC can ping another device, but it can't be pinged.

    Why not shut off your firewall (temporarily) and see if it works then?

    Best way I can think of to make sure it's not the firewall
  • Options
    surfthegeckosurfthegecko Member Posts: 149
    Thanks for all your suggestions.
    I figured out that the tf-tp application was acting as a DHCP server which was messing things up.

    Disabled the DHCP server feature and then hey presto, everything works fine.


    Sorry about not replying sooner, I kept getting 'Forbidden' error messages when trying to reply and found out from the Admins that its because I was using the word tee-ef-tee-pee which their posts dont allow. Hence the above mentioned tf-tp.
  • Options
    NetwurkNetwurk Member Posts: 1,155 ■■■■■□□□□□
    Thanks for all your suggestions.
    I figured out that the tf-tp application was acting as a DHCP server which was messing things up.

    Disabled the DHCP server feature and then hey presto, everything works fine.


    Sorry about not replying sooner, I kept getting 'Forbidden' error messages when trying to reply and found out from the Admins that its because I was using the word tee-ef-tee-pee which their posts dont allow. Hence the above mentioned tf-tp.

    Glad you got it working - not sure why the forum now blocks the word t f t p

    Maybe a bug in the software?

    Probably something trivial

    ;)
  • Options
    surfthegeckosurfthegecko Member Posts: 149
    I think it blocks it to stop signature injection or something like that.
    It was explained to me but I deleted the email now.

    Anyway all running sweet now.
    icon_cheers.gif
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