eG Monitoring
 
Measures reported by OraVdiRdbBrokTest

Oracle Virtual Desktop Infrastructure includes a built-in RDP broker that enables easy desktop access leveraging the Remote Desktop Protocol (RDP). This way, users can take advantage of existing RDP clients (for example, the remote desktop connection in Windows XP) for accessing desktops.

  1. The RDP client first contacts the Oracle VDI RDP broker (passing over any information like username, password, etc).
  2. The RDP broker will then contact the Oracle VDI Core service on behalf of the client and will ask to startup the desired desktop.
  3. The Oracle VDI Core service will first verify the username/password combination if client authentication is enabled on the service side (default).
  4. If authentication succeeds, the corresponding desktop will be started up and the Oracle VDI Core service returns the IP and optionally RDP port of the virtual machine (VM) running the desktop.
  5. This information is used by the RDP broker to construct an RDP Server Redirection Packet containing either:

    • the VM host/IP address as the server to redirect to (if using Windows RDP, as done for VMware Infrastructure 3)
    • or a routing token containing encoded IP address and RDP port information (if using the VirtualBox RDP, also known as VRDP)

    The latter is necessary, because VRDP does not use the standard Windows RDP port. Thus the RDP broker needs to hand back both the IP and the RDP port information.

  6. Finally, this RDP redirection packet is sent back to the RDP client and the client will redirect accordingly.
If the RDP Broker is not running then users connecting via RDP clients may not be able to access their desired desktops.

This test promptly alerts administrators if the RDP Broker service stops, so that the service can be started before users complain.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Rdb_state Indicates whether the RDP broker service is currently running or not.   If the broker service is running, then this measure will report the value Online. If the broker service is not running, then this measure will report the value Offline.

The table below lists the numeric values that correspond to each of the states mentioned above:

State Numeric Value
Online 100
Offline 0

Note:

Typically, this measure will report the States indicated in the table above as its values. However, in the graph of this measure, the online/offline states will be represented using their numeric equivalents only - i.e., 0 and 100.

The detailed diagnosis of this measure reveals when the RDB Broker service started and the full instance name of the service.