From: Mohammad Saeed (mzsaeed@gmail.com)
Date: Wed Aug 29 2007 - 15:22:10 ART
Actually we have successfully downloaded from same FTP Server to other
routers and switches on Internal Network, but the problem is on
devices in DMZ Zone...
Thanks for your input.
Regards,
Mohammad Zahed Saeed
On 8/28/07, eicc tester <reto_ccie@yahoo.com> wrote:
> Sometimes FTP Server software are the problem, did you try with another FTP
> Server softwares?
> reto
>
> Mohammad Saeed <mzsaeed@gmail.com> wrote:
> Hello,
>
> I am facing problem downloading IOS Image of almost 5MB size to the
> router from FTP Server. The session gets stuck and never recovers. But
> if I download some small file like 100KB from same FTP Server to the
> same router's FLASH it works.
>
> When I look TCP Dump for successful attempt of downloading smaller
> file, I don't see FTP DATA Connection opening up from FTP Server using
> source port 20 to the random port sent by FTP client on the router to
> the server telling the server to initiate the DATA connection to
> transfer the data. But there is communication happening from FTP
> Client (Router) using a random source port number to the FTP Server's
> port number 21 which is normally used for FTP Control connection. And
> file transfer does happen successfully.
>
> Now my question is that Can FTP Transfer DATA using the CONTROL
> Connection which CLIENT will open with the server on port 21 without
> opening up DATA Connection which is in normal FTP Mode will be opened
> up from server using source port number 20 to the random port number
> of the client, that client would tell the server to open DATA
> connection on?
>
> Any help is highly appreciated :)
>
> Regards,
>
> Mohammad Zahed Saeed
>
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This archive was generated by hypermail 2.1.4 : Sat Sep 01 2007 - 11:32:13 ART