Soumya Y Shanthimohan 270004GAQS Visits (1525)
What is an IP alias
IP aliasing is associating more than one IP address to a network interface.
IP aliasing in RPT
By default, when you run a schedule, each virtual user has the same IP address. However, you can make each virtual user appear as though it is running on its own host. To do this, you configure IP aliases on the host computer (RPT workbench), and enable IP aliasing in the schedule. When you run the schedule, the network traffic will appear to be generated by multiple hosts.
To avoid IP conflicts, the IPs have to be legitimate, available within the same subnet, and blocked for distribution.
Configuring IP aliases for a remote Windows location
To make it appear that a virtual user has its own IP address during a schedule run, configure IP aliases for each Windows remote location.
Now, when you run the schedule, it will give the impression that the network traffic is being generated from multiple hosts.
Note: To add multiple IP aliases, use the netsh command, as shown in the following example:
The ntcmds.chm file, typically located in C:\WINDOWS\Help, contains more details about the netsh command. When you are finished with the IP aliases, use the following command to remove them:
You can also use a batch file to add and delete the aliases.
Enabling virtual users to use IP aliases
After you have configured aliases at on remote computers, you set the schedule so that the virtual users can use the configured IP aliases.
To set the schedule so that the virtual users will use the IP aliases during a run:
Assignment of IP addresses for each virtual user in RPT
When IP aliases is enabled, it is expected that each virtual users have unique IP address available in order to emulate unique virtual users. However in some circumstances the number of IP address available may be less than the number of virtual users.
The answer to this is, when the location has IP aliasing enabled, RPT will ask the agent computer how many IP addresses it has available. It is up to you to have already configured the computer with these IP addresses. By default, RPT will use all IPv4 (but not IPv6) address available. You can also restrict the selection to IP addresses on particular interfaces.
If there are more virtual users on the location than there are IP addresses (which would normally be the case), RPT will distribute the virtual users evenly (more or less) across the available IP addresses. For example, if your location has IP addresses 192.22.22.02, 192.22.22.03, and 192.22.22.04 and you ran 10 users on the location, you would have a distribution similar to:
192.22.22.02: Users 1, 4, 7, 10
192.22.22.03: Users 2, 5, 8
192.22.22.04: Users 3, 6, 9
Identifying the originating IP address for each Virtual Tester
By default, when you run multiple Virtual Testers the originating IP address will be the IP address of the system hosting the individual Virtual Tester. However, RPT does have a feature (IP Aliasing) that allows you to assign a specific set of IP addresses per Virtual Tester (See the topic ‘Emulating network traffic from multiple hosts’ in RPT online help). If you have IP aliasing set up, there are two ways to verify the originating IP address.
You can see the IP address that a virtual Tester is using by setting the Test Log level of your schedule to ‘All’ and then checking the Extended Properties of a request in the Test Log after a playback. The originating address of the virtual user will appear as the "Local IP Address".
Alternatively, there is a custom code class outlined in the RPT online help (Extending Rational Performance Tester Functionality -> Custom Code Examples -> Retrieving the IP address of a Virtual user) that you can add to your test/schedule that will obtain the IP address
mquimby 060001FAVB Visits (1525)
There are some new videos available for the Rational Collaborative Lifecycle Management (CLM) products. Two of the topics are the integration of the Data Collection Component into Rational Insight and in the installation of the V5.0 Jazz Reporting Service. There is another video that focuses on exporting and importing system definitions with enterprise edition of Rational Team Concert (RTC), a method you can use to provide system information to Rational Support. Thank you to support engineers Ben Silverman and Olivier Gauneau for creating the videos.
Here is a look at one of the videos:
AcdntlPoet 2700019V2G Visits (1523)
IBM Business Process Manager v8.5 Advanced Install and Configuration- This demonstration video will cover a typical install and configuration of IBM Business Process Manager version 8.5 Advanced. The typical install option will install DB2 Express, create the database tables, create a deployment manager profile, a node agent, and the Process Center server. Then, we will download Process Designer and install it. All product binaries and profile configurations with be for a one cluster topology on the Windows 7 operating system.
Resource URLs for the demo:
irenebond 270000P84P Visits (1522)
84% of us check our Smartphones as soon as we wake up. Guilty. Research shows that most of us who use social media for customer service expect a very quick response. Guilty again; but that’s actually my expectation for every customer service interaction. And I expect it to be personal and meaningful. I hate unproductive wait time. Are my standards too high?
Down time has become more critical in a Bring Your Own Device world hooked on 24X7 access and response. Grabbing a cup of coffee is often my answer, but when thousands of users are idled because a mission critical app is down the cost is more than a few bucks. IDC and others gauge the cost of down time at a whopping $100K/hr per thousand users. Dunn & Bradstreet says a typical organization annually loses 14 hours to app down time and that is increasing by 12% every year. That’s burning real money fast.
Having an Accelerated Value Leader is the ticket to personal, meaningful interactions that often result in zero down time - for less than cost of a couple hours of wasted productivity. One Semiconductor Company with whom AVP partners went from multiple critical incidents that repeatedly brought their global dev teams to a full stop, to zero critical incidents in the first year of the program. That’s a tangible ROI of >$450K - and it’s just part of what we accomplished together.
Interested? Come by Asia 5 at IBM Innovate2014 and learn why more than half of the world’s top 25 public companies choose AVP.
Invitation: IBM Rational ClearCase OPEN MIC : "ClearCase 8.0.1 - New features and Planning for Upgrade" 24th September 2014 - 14:30 IST
AcdntlPoet 2700019V2G Visits (1521)
Greetings from IBM Rational ClearCase Client Support!
We are glad to invite you to the OpenMic* session on "ClearCase 8.0.1 - New features and Planning for Upgrade".
Keeping in mind that version 7.1.2.x is about to reach its ‘End of Support - 30th Sept 2014’, this session will help you plan your IBM Rational ClearCase upgrade to the latest supported version.
Please join us virtually on Wednesday, September 24th 2014 at 14:30 IST
*OpenMic is a conference call along with webcasts where technical experts share their knowledge and answer your questions.
Topic: "ClearCase 8.0.1 - New features and Planning for Upgrade"
When: 24th September 2014 at 14:30 IST (India Standard Time)
Following are the key areas which we will cover:
The speakers are all a part of the IBM Rational Clearcase Support Team with significant experience in the Software Configuration Management domain.
Web Conference Details for all:
Meeting ID: 6685-7571
( USA Toll Free 888-426-6840 Toll 215-861-6239
Tie Line/ITN 650-6840 / 2650-6840
In countries with an AT&T Direct number listed below, participants should dial the AT&T Direct number first and, when prompted, dial the toll free number listed
- Preferred -
Country Local Number AT&T Direct / Toll Free
Thank You And Best Regards