Applies To:

Show Versions Show Versions

Manual Chapter: Integrating BIG-IP GTM with Other BIG-IP Systems
Manual Chapter
Table of Contents   |   << Previous Chapter   |   Next Chapter >>

Overview: Integrating GTM with older BIG-IP systems on my network

You can add BIG-IP systems to a network in which Local Traffic Manager systems are already present. This allows you to expand your load balancing and traffic management capabilities beyond the local area network. For this implementation to be successful, you must authorize communications between the systems.

Note: The BIG-IP GTM systems in a synchronization group and the BIG-IP LTM and BIG-IP Link Controller systems that are configured to communicate with the systems in the synchronization group must have port 4353 open through the firewall between the systems. The BIG-IP systems connect and communicate through this port.

About the iQuery protocol and the big3d agent

The gtmd process on BIG-IP systems uses the iQuery protocol to communicate with the big3d agent on the system and the big3d agents installed on other BIG-IP systems. The gtmd process monitors both the availability of the BIG-IP systems, and the integrity of the network paths between the systems that host a domain and the local DNS servers that attempt to connect to that domain.

Important: To facilitate communication across BIG-IP systems ensure that the big3d agent is installed on each system.
Illustration of communications between big3d and gtmd agents

Task summary

To authorize communications between BIG-IP systems, perform the following tasks on the BIG-IP GTM that you are adding to the network.

Defining a data center

Create a data center to contain the servers that reside on a subnet of your network.
  1. On the Main tab, click Global Traffic > Data Centers. The Data Center List screen opens.
  2. Click Create. The New Data Center screen opens.
  3. Type a name for the data center. Names must begin with a letter, and can contain only letters, numbers, and the underscore (_)character.
    Important: The data center name is limited to 63 characters.
  4. In the Location field, type the geographic location of the data center.
  5. In the Contact field, type the name of either the administrator or the department that manages the data center.
  6. From the State list, select Enabled.
  7. Click Finished.
You can now create server objects and assign them to this data center.
Repeat this procedure to create additional data centers.

Defining BIG-IP GTM

Ensure that at least one data center exists in the configuration before you start creating a server.
Create a server object for BIG-IP GTM.
  1. On the Main tab, click Global Traffic > Servers. The Server List screen opens.
  2. Click Create. The New Server screen displays.
  3. In the Name field, type a name for the server. Names must begin with a letter, and can contain only letters, numbers, and the underscore (_) character.
    Important: Server names are limited to 63 characters.
  4. From the Product list, select BIG-IP System (Single). The server type determines the metrics that the system can collect from the server.
  5. In the Address List area, add the IP addresses of the server. You can add more than one IP address, depending on how the server interacts with the rest of your network.
    Important:
    You must use a self IP address for a BIG-IP system; you cannot use the management IP address.
  6. From the Data Center list, select the data center where the server resides.
  7. In the Health Monitors area, assign the bigip monitor to the server by moving it from the Available list to the Selected list.
  8. From the Virtual Server Discovery list, select how you want virtual servers to be added to the system.
    Option Description
    Disabled This is the default value. Use this option for a standalone BIG-IP GTM or for a BIG-IP GTM/LTM combo system when you plan to manually add virtual servers to the system.
    Enabled The system uses the discovery feature to automatically add virtual servers. Use this option for a BIG-IP GTM/LTM combo system when you want BIG-IP GTM to discover BIG-IP LTM virtual servers.
    Enabled (No Delete) The system uses the discovery feature to automatically add virtual servers and does not delete any virtual servers that already exist. Use this option for a BIG-IP GTM/LTM combo system when you want BIG-IP GTM to discover BIG-IP LTM virtual servers.
  9. Click Create. The Server List screen opens displaying the new server in the list.

Defining the existing BIG-IP systems

On BIG-IP GTM, define a server that represents each BIG-IP system to place the systems on the network map.
  1. On the Main tab, click Global Traffic > Servers. The Server List screen opens.
  2. Click Create. The New Server screen displays.
  3. In the Name field, type a name for the server. Names must begin with a letter, and can contain only letters, numbers, and the underscore (_) character.
    Important: Server names are limited to 63 characters.
  4. From the Product list, select either BIG-IP System (Single) or BIG-IP System (Redundant). The server type determines the metrics that the system can collect from the server.
  5. In the Address List area, add the IP addresses of the server. You can add more than one IP address, depending on how the server interacts with the rest of your network.
    Important:
    You must use a self IP address for a BIG-IP system; you cannot use the management IP address.
  6. From the Data Center list, select the data center where the server resides.
  7. In the Health Monitors area, assign the bigip monitor to the server by moving it from the Available list to the Selected list.
  8. From the Virtual Server Discovery list, select how you want virtual servers to be added to the system.
    Option Description
    Disabled This is the default value. Use this option for a standalone BIG-IP GTM or for a BIG-IP GTM/LTM combo system when you plan to manually add virtual servers to the system.
    Enabled The system uses the discovery feature to automatically add virtual servers. Use this option for a BIG-IP GTM/LTM combo system when you want BIG-IP GTM to discover BIG-IP LTM virtual servers.
    Enabled (No Delete) The system uses the discovery feature to automatically add virtual servers and does not delete any virtual servers that already exist. Use this option for a BIG-IP GTM/LTM combo system when you want BIG-IP GTM to discover BIG-IP LTM virtual servers.
  9. Click Create. The New Server screen displays.

Running the big3d_install script

Determine the self IP addresses for the existing BIG-IP systems that you want to upgrade with the latest big3d agent.
Run the big3d_install script. This script upgrades the big3d agents on the BIG-IP systems and instructs these systems to authenticate with the other systems through the exchange of SSL certificates. For additional information about running the script, see SOL8195 on AskF5.com (www.askf5.com).

You must perform this task from the command-line interface.

Important: Run the big3d_install script on BIG-IP GTM only for target systems that are running the same or an older version of BIG-IP software.
  1. Log on to the command-line interface of the new BIG-IP GTM.
  2. At the command prompt, type big3d_install <IP_addresses_of_target_BIG-IP_systems>, and press Enter. The script instructs BIG-IP GTM to connect to each specified BIG-IP system.
  3. When prompted, supply the logon information for each system.
The SSL certificates are exchanged, authorizing communications between the systems. The big3d agent on each system is upgraded to the same version as is installed on BIG-IP GTM from which you ran the script.

Implementation results

You now have an implementation in which the BIG-IP systems can communicate with each other. BIG-IP GTM can now use the other BIG-IP systems when load balancing DNS requests, and can acquire statistics and status information for the virtual servers these systems manage.

Table of Contents   |   << Previous Chapter   |   Next Chapter >>

Was this resource helpful in solving your issue?




NOTE: Please do not provide personal information.



Incorrect answer. Please try again: Please enter the words to the right: Please enter the numbers you hear:

Additional Comments (optional)