MI Listener in LoadRunner

In a regular LoadRunner load test scenario (not over a firewall), The Controller has direct access to the LoadRunner agents running on remote machines. This enables the Controller to connect directly to those machines. When running Vusers or monitoring applications over a firewall, this direct connection is blocked by the firewall. The connection cannot be established by the Controller, because it does not have permissions to open the firewall.

LoadRunner solves this problem by using a communication configuration based on HTTPS or secured TCP/IP. This configuration uses the standard SSL
port on the firewall (port 443).

The MI Listener is a component that serves as router between the Controller
and the LoadRunner agent.

When the LoadRunner agent connects to the MI Listener, the MI Listener keeps a listing of the connection to the agent using a symbolic name that the agent passed to it. When the Controller connects to the MI Listener, it communicates to the
MI Listener through port 50500.

Setting up your System to Use Firewalls:

Setting up your system to use firewalls involves the following stages of configuration:

1. Installation and initial configuration

2. Running Vusers over a firewall

Installation and initial configuration

To enable over-firewall communication, ensure that you have installed the
following LoadRunner components:

MI Listener (Monitor Over Firewall component)

To perform initial configuration of your over-firewall system:

Ø Configure your system according to TCP or HTTPS.

Ø Modify your firewall settings to enable communication between the machines on either side of the firewall.

Ø Configure the MI Listener.

Configuring the MI Listener

Ø Open incoming HTTPS service for port 443. The port settings are set by your system administrator.

Ø Stop the LoadRunner agent on the MI Listener machine by right-clicking its
icon in the system tray and selecting Close from the popup menu.

Run MI Listener Configuration from
Start > Programs > LoadRunner > Advanced Settings, or run \launch_service\bin\MILsnConfig.exe.

Ø Set each option as described in the following table:

Ø Click OK to save your changes, “Cancel” to cancel them, or Use Defaults.

Ø Restart the LoadRunner agent by double-clicking the shortcut on the
desktop, or choosing Start > Programs > LoadRunner.

Ø Make sure that port 443 is free on the MI Listener machine.

Comments

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