Applies To:

Show Versions Show Versions

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

Overview: Integrating LTM systems with GTM systems on a network

You can add BIG-IP Local Traffic Manager (LTM) systems to a network in which BIG-IP Global Traffic Manager (GTM) systems are already present. This expands your load balancing and traffic management capabilities to include the local area network. For this implementation to be successful, you must authorize communications between the LTM and GTM systems. When the LTM and GTM systems use the same version of the big3d agent, you run the bigip_add utility to authorize communications between the systems.

Note: The BIG-IP GTM and BIG-IP LTM systems must have TCP port 4353 open through the firewall between the systems. The BIG-IP systems connect and communicate through this port.

Task summary

To authorize communications between BIG-IP GTM and BIG-IP LTM systems, perform the following tasks on the BIG-IP GTM.

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.
    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 systems

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 opens.
  3. In the Name field, type a name for the server.
    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 The system does not use the discovery feature to automatically add virtual servers. 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. From the Link Discovery list, select how you want links to be added to the system.
    Option Description
    Disabled The system does not use the discovery feature to automatically add links. 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 links to the system.
    Enabled The system uses the discovery feature to automatically add links. Use this option for a BIG-IP GTM/LTM combo system when you want BIG-IP GTM to discover links.
    Enabled (No Delete) The system uses the discovery feature to automatically add links and does not delete any links that already exist. Use this option for a BIG-IP GTM/LTM combo system when you want BIG-IP GTM to discover links.
  10. Click Create. The Server List screen opens displaying the new server in the list.

Defining BIG-IP LTM systems

On BIG-IP GTM, define servers that represent the BIG-IP LTM systems in your network.
  1. On the Main tab, click Global Traffic > Servers. The Server List screen opens.
  2. Click Create. The New Server screen opens.
  3. In the Name field, type a name for the server.
    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 The system does not use the discovery feature to automatically add virtual servers. 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. From the Link Discovery list, select how you want links to be added to the system.
    Option Description
    Disabled The system does not use the discovery feature to automatically add links. 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 links to the system.
    Enabled The system uses the discovery feature to automatically add links. Use this option for a BIG-IP GTM/LTM combo system when you want BIG-IP GTM to discover links.
    Enabled (No Delete) The system uses the discovery feature to automatically add links and does not delete any links that already exist. Use this option for a BIG-IP GTM/LTM combo system when you want BIG-IP GTM to discover links.
  10. Click Create. The Server List screen opens displaying the new server in the list.

Running the bigip_add utility

Determine the self IP addresses of the BIG-IP LTM systems that you want to communicate with BIG-IP GTM.
Run the bigip_add utility on BIG-IP GTM. This utility exchanges SSL certificates so that each system is authorized to communicate with the other.

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

  1. On BIG-IP GTM, log on to the command-line interface.
  2. At the command prompt, type: bigip_add <IP_addresses_of_BIG-IP_LTM_systems>, and press Enter. The utility exchanges SSL certificates so that each system is authorized to communicate with the other.
The specified BIG-IP systems can now communicate with BIG-IP GTM.

Implementation result

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)