Expiring Today—Celebrate National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Deciphering AS/400 Terminal traffic

Posted on 2010-08-19
7
Medium Priority
?
712 Views
Last Modified: 2013-12-06
We need to look at activities by the end-user in terms of Data sent to the AS/400 applications and response received from the app by sniffing the TCP/IP data packets being sent on the wire.
Is there any document/library that gives the message formats that will enable us to do this.
Thanks
0
Comment
Question by:appnomicpaddy
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
7 Comments
 
LVL 9

Assisted Solution

by:vsg375
vsg375 earned 400 total points
ID: 33474105
Hi,

Not a specialist, but I guess this might be of some help :

http://www.ethereal.com/lists/ethereal-dev/200511/msg00275.html

Cheers.
0
 
LVL 35

Expert Comment

by:Gary Patterson
ID: 33474687
Here's a page with an overview of the protocol and links to the relevant RFCs

http://www.sdisw.com/tn5250/tn5250.htm

Google "tn5250 protocol"
0
 
LVL 5

Expert Comment

by:stevebowdoin
ID: 33475300
This is not an easy task.  You will be buried with data.
Do you want to monitor all users or a particular user?
Your question seems general.  Gary’s response is correct for that.

Steve
0
Portable, direct connect server access

The ATEN CV211 connects a laptop directly to any server allowing you instant access to perform data maintenance and local operations, for quick troubleshooting, updating, service and repair.

 
LVL 27

Expert Comment

by:tliotta
ID: 33478758
We need to look at activities by the end-user...

Please clarify. Are you simply needing to provide an audit? Is this intended to be surreptitious or is it going to be a public policy? Is it only "telnet"? What if a different protocol is used, e.g., remote command or ODBC?

Tom
0
 

Author Comment

by:appnomicpaddy
ID: 33478805
@tillotta - This is a public policy, we are trying to measure application transaction response times across screens for all users, and trying to do that in an non-invasive way on the application.
0
 
LVL 35

Accepted Solution

by:
Gary Patterson earned 1600 total points
ID: 33479090
I've been doing AS/400 performance anlayis for over 20 years, and I can tell you that the approach you are proposing is a fairly difficult way to go about obtaining response time data.  The TN5250 datastream is relatively complex, and you may find it harder than you think to use protocol analysis as a mechanism for monitoring response time.

IBM offers built-in performance monitoring and management tools.  Why not just use those?  It is possible to monitor interactive response time in real-time, and through batch reporting.

The free, IBM-supplied performance collection utliity, Collection Services, has the ability to capture detailed job performance data, including interactive system response time and a bevy of other useful performance data.

You can use IBM (Performance Tools, Job Watcher, etc), third-party, or homegrown tools and queries to analyze the performance data that is collected.

In addition to providing transaction response time information, Collection Services can track hundreds of other performance statistics on interactive, server, and batch workloads.

Here's a short PDF that discusses the various performance tools available to AS/400 system administrators.

http://www.redbooks.ibm.com/redpapers/pdfs/redp4026.pdf

- Gary Patterson

Check out my EE profile: http://www.experts-exchange.com/M_4382324.html 
0
 
LVL 27

Expert Comment

by:tliotta
ID: 33479517
The free, IBM-supplied performance collection utliity...

IMO, Gary is on target with this and the rest of his post. The built-in tools are sufficient by themselves and almost certainly far easier and more accurate than anything that would be added on by developers to capture the info.

In addition, you might consider using job accounting codes to create a parallel job accounting database. Specific points of interest might be flagged by setting an accounting code to mark the beginning of a segment and resetting it to mark an end point. The journal entries could be used either for their own data or to provide timestamps to correlate with specific performance data.

Note that essentially all of the capabilities are already present in the system. Plenty can be added if fancy queries, graphs, etc., are desired without programmer time; but costs start going to purchasing products and product learning curves rather than to programming efforts. Management choice...

Tom
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction Often we come across situations wherein our batch files would be needing to reboot Windows for a variety of reasons. A few of them would be like: (1) Setup files have been updated whose changes can take effect only after a reboot …
In a recent article here at Experts Exchange (http://www.experts-exchange.com/articles/18880/PaperPort-14-in-Windows-10-A-First-Look.html), I discussed my nine-month sandbox testing of the Windows 10 Technical Preview, specifically with respect to r…
This is used to tweak the memory usage for your computer, it is used for servers more so than workstations but just be careful editing registry settings as it may cause irreversible results. I hold no responsibility for anything you do to the regist…
Hi friends,  in this video  I'll show you how new windows 10 user can learn the using of windows 10. Thank you.

719 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question