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FTP from PC to Mainframe is not Working.

 
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balaji_g_m

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Joined: 27 Aug 2006
Posts: 8

PostPosted: Sat Sep 11, 2010 6:06 pm    Post subject: FTP from PC to Mainframe is not Working.
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I am trying to FTP a file from PC to Mainframe thru command prompt.

When I connect to the mainframe IP address, I receive the following Error message

"ftp: connect :Unknown error number".

P.S:

When I Ping the Mainframe IP Address from my PC Command prompt, I get a Reply.

Appreciate your response.

Thanks.
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Robert Sample

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Joined: 06 Jun 2008
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PostPosted: Sat Sep 11, 2010 6:48 pm    Post subject:
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Could you help yourself just a little and, maybe, post the exact commands you are typing into FTP command prompt?
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superk

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Joined: 26 Apr 2004
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Location: Raleigh, NC, USA

PostPosted: Sat Sep 11, 2010 7:46 pm    Post subject: Re: FTP from PC to Mainframe is not Working.
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balaji_g_m wrote:
When I Ping the Mainframe IP Address from my PC Command prompt, I get a Reply.


Jeez, I'd sure hope so, or you'd have much bigger problems. A ping doesn't require access rights or any kind of authentification. FTP does, and my gut feeling is that you don't have the proper FTP authority. I presume that you've already tested and verified your FTP access on your mainframe already?
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balaji_g_m

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Joined: 27 Aug 2006
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PostPosted: Mon Sep 13, 2010 4:04 pm    Post subject:
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Robert Sample wrote:
Could you help yourself just a little and, maybe, post the exact commands you are typing into FTP command prompt?


Hello Robert,

I am writing a Java tool to interact with Mainframe in FTP Mode [To submit a Job, Receive and Import reports].

To Test the functionality, I attempted connecting to Mainframe thru FTP commands in PC Command Prompt.

C:\Documents and Settings\Balaji>ftp

ftp> open
To XXX.XX.XXX.XXX
> ftp: connect :Unknown error number

Whereas when I try pinging the IP using the following command, I receive the response.

C:\Documents and Settings\Balaji>ping XXX.XX.XXX.XXX

Pinging XXX.XX.XXX.XXX with 32 bytes of data:

Reply from XXX.XX.XXX.XXX: bytes=32 time=448ms TTL=34
Reply from XXX.XX.XXX.XXX: bytes=32 time=411ms TTL=34
Reply from XXX.XX.XXX.XXX: bytes=32 time=405ms TTL=34
Reply from XXX.XX.XXX.XXX: bytes=32 time=402ms TTL=34

Ping statistics for XXX.XX.XXX.XXX:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 402ms, Maximum = 448ms, Average = 416ms


P.S: The IP Address is masked with X
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balaji_g_m

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Joined: 27 Aug 2006
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PostPosted: Mon Sep 13, 2010 4:13 pm    Post subject: Re: FTP from PC to Mainframe is not Working.
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superk wrote:
balaji_g_m wrote:
When I Ping the Mainframe IP Address from my PC Command prompt, I get a Reply.


Jeez, I'd sure hope so, or you'd have much bigger problems. A ping doesn't require access rights or any kind of authentification. FTP does, and my gut feeling is that you don't have the proper FTP authority. I presume that you've already tested and verified your FTP access on your mainframe already?


Hello Superk,

I was having an impression that we do not require rights to establish a connection [Using FTP OPEN Command].

Once connection is established it requests for RACF ID and password.

My concern is connection is not established with mainframe [FTP OPEN].
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Anuj Dhawan

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Joined: 22 Apr 2006
Posts: 6258
Location: Mumbai, India

PostPosted: Mon Sep 13, 2010 6:09 pm    Post subject:
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Are you not talking about one of those things which should be addressed by your Site-Support Group?
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Robert Sample

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Joined: 06 Jun 2008
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Location: Bellevue, IA

PostPosted: Mon Sep 13, 2010 6:17 pm    Post subject:
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This syntax is wrong:
Quote:
ftp> open
To XXX.XX.XXX.XXX
You should be entering "open xxx.xx.xxx.xxx" (assuming, of course, that xxx.xx.xxx.xxx is your mainframe IP address).
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superk

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Joined: 26 Apr 2004
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Location: Raleigh, NC, USA

PostPosted: Mon Sep 13, 2010 6:32 pm    Post subject: Reply to: FTP from PC to Mainframe is not Working.
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Actually, just specifying >open does work. Just as the OP has shown, the response is the prompt >To to which you can respond with the FTP server address or domain name.

Code:

C:\>ftp
ftp> open
To mvsxxxx
Connected to mvsxxxx.xxxx.xx
220-FTPB1 IBM FTP CS V1R11 at MVSXXXX.xxxx.xx
220 Connection will close if idle for mor
User (mvsxxxx.xxxx.xxx:(none)):
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Robert Sample

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PostPosted: Mon Sep 13, 2010 6:57 pm    Post subject:
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Thanks for the information, kevin -- I provide the destination as part of the open command so I didn't realize the syntax when you don't put it in.

In that case, balaji_g_m, your only choice is to contact your site support group and work with them to figure out the problem. An online forum like this cannot look at the system log (among other resources) to determine what the problem is.
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Craq Giegerich

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Joined: 19 May 2007
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Location: Virginia, USA

PostPosted: Mon Sep 13, 2010 7:05 pm    Post subject:
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Is java putting a hex'00' at the end of the FTP server address?
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balaji_g_m

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PostPosted: Mon Sep 13, 2010 7:43 pm    Post subject:
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Craq Giegerich wrote:
Is java putting a hex'00' at the end of the FTP server address?


Hello Crag,

No it is not putting Hex '00' at the end of the FTP

----------------------------------------------------------------------------------

Thanks All for your suggestions.

I tried ping SYSA or SYSB or SYSC in command option in TSO [Option 6] that gives me the correct IP Address for FTP.

and with that IP Address, the connection is established.

Thanks again.




Code:
  Menu  List  Mode  Functions  Utilities  Help                                 
 ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
                               ISPF Command Shell                               
 Enter TSO or Workstation commands below:                                       
                                                                               
 ===> ping sysa                                                                 
                                                                               
                                                                               
                                                                               
 Place cursor on choice and press enter to Retrieve command                     
                                                                               
 =>                                                                 
 =>
 =>       
 =>                       
 =>                       
 =>                       
 =>                       
 =>                       
 =>                       
 =>                       
 CS V1R10: Pinging host SYSA.XXXXX.XX (XX.XXX.XX.XX)                     
 Ping #1 response took 0.001 seconds.                                           
 ***
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superk

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Joined: 26 Apr 2004
Posts: 4648
Location: Raleigh, NC, USA

PostPosted: Mon Sep 13, 2010 8:07 pm    Post subject: Reply to: FTP from PC to Mainframe is not Working.
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So ....

you were connecting to the wrong address?
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balaji_g_m

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Joined: 27 Aug 2006
Posts: 8

PostPosted: Mon Sep 13, 2010 8:28 pm    Post subject: Re: Reply to: FTP from PC to Mainframe is not Working.
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superk wrote:
So ....

you were connecting to the wrong address?


Nope. I was connecting to the IP that we use to connect to the Mainframe Terminal [IBM Personal communications]. Looks like that is a Proxy IP Address.

Here is the background Information, I work from offshore [Not in the client workplace] so the network team has provided a Proxy IP address to connect to Client workplace. This Proxy IP shall not be similar to the exact LPAR IP address. Adding to it, This Proxy IP do not have FTP port Number [21] enabled. This was the reason why I was able to get reply from the server and was not successful in establishing the connection.

From the google search, I believe many have faced this issue and couldn't resolve it. Hence added my resolution to this Post.
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dick scherrer

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Joined: 23 Nov 2006
Posts: 19270
Location: Inside the Matrix

PostPosted: Mon Sep 13, 2010 8:52 pm    Post subject: Reply to: FTP from PC to Mainframe is not Working.
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Good to hear it is working - thank you for posting the resolution icon_smile.gif

d
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Anuj Dhawan

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Joined: 22 Apr 2006
Posts: 6258
Location: Mumbai, India

PostPosted: Tue Sep 14, 2010 2:56 pm    Post subject: Re: Reply to: FTP from PC to Mainframe is not Working.
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balaji_g_m wrote:
Here is the background Information, I work from offshore [Not in the client workplace] so the network team has provided a Proxy IP address to connect to Client workplace. This Proxy IP shall not be similar to the exact LPAR IP address. Adding to it, This Proxy IP do not have FTP port Number [21] enabled. This was the reason why I was able to get reply from the server and was not successful in establishing the connection.
If that was the set-up at your shop then I'm not sure if we are really talking about a "solution"! AFAIK, In computer networks, a proxy server is a server (a computer system or an application program) that acts as an intermediary for requests from clients seeking resources from other servers. A client connects to the proxy server, requesting some service, such as a file, connection, web page, or other resource, available from a different server. The proxy server evaluates the request according to its filtering rules. For example, it may filter traffic by IP address or protocol. If the request is validated by the filter, the proxy provides the resource by connecting to the relevant server and requesting the service on behalf of the client. But in your case, you've bypassed the proxy-server itself then what's the benfit of having a proxy-server at first place?
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