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Manual Chapter: BIG-IP Local Traffic Manager version 9.3 Implementations: Load Balancing Traffic to IPv6 Nodes
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20

Load Balancing Traffic to IPv6 Nodes


Configuring the radvd service

The first task to setting up the BIG-IP® system to function as an IPv4-to-IPv6 gateway is an optional one: to configure the radvd service. You configure the radvd service to send out ICMPv6 routing advisory messages, and to respond to ICMPv6 route solicitation messages.

When you perform this task, the BIG-IP system begins to support auto-configuration of downstream nodes. Also, the downstream nodes automatically discover that the BIG-IP system is their router.

Configuring the radvd service to perform these functions ultimately advertises the network's global address prefix on the internal VLAN. For more information on BIG-IP system services, see the BIG-IP® Network and System Management Guide.

To configure the radvd service

  1. Using a serial console or the IP address of the BIG-IP system management interface, access an operating system prompt on the BIG-IP system.
  2. Copy the file /etc/radvd.conf.example to a new file named /etc/radvd.conf.
  3. Using the nano or vi text editor, open the file /etc/radvd.conf.
  4. Using the example in the file, create an advertising configuration for the network's global address prefix.
  5. Note: Replace the prefix option with an address appropriate for your network.
  6. Save the /etc/radvd.conf file and exit the editor.
  7. Start the radvd service as follows:
  8. bigstart startup radvd
  9. Verify that the IPv6 nodes have auto-configured their addresses for this prefix.
  10. Take note of the addresses of the HTTP service IPv6 nodes.
    These addresses are required for the next step in the process, configuring IPv4-to-IPv6 load balancing.

Configuring IPv4-to-IPv6 load balancing

When you configure IPv4-to-IPv6 load balancing, you must create a pool for load balancing traffic to IPv6 nodes, and then create an IPv4 virtual server that processes application traffic.

Creating a pool of IPv6 nodes

The first task in configuring IPv4-to-IPv6 load balancing is to create a pool to load balance connections to IPv6 nodes. Use the Configuration utility to create this pool. For more detailed information about configuring a pool, see the Configuration Guide for BIG-IP® Local Traffic Management.

To create a pool of IPv6 nodes

  1. On the Main tab of the navigation pane, expand Local Traffic, and click Pools.
    The Pools screen opens.
  2. In the upper-right corner of the screen, click Create.
    The New Pool screen opens.
  3. Note: If the Create button is unavailable, this indicates that your user role does not grant you permission to create a pool.
  4. In the Name box, type a name for the pool, such as ipv6_pool.
  5. For the Health Monitors setting, from the Available box select a monitor for the type of traffic you want to load balance, and click the Move button (<<) to move the monitor name to the Active box.
  6. For the New Members setting, add the IPv6 pool members:
    1. Click the New Address option.
    2. In the Address box, type the IPv6 address of a node in the pool.
    3. In the Service Port box, type a service number, such as 80, or select a service name, such as HTTP.
    4. Click Add.
    5. Repeat steps b, c, and d for each node in the pool.
  7. Click Finished.

Creating a virtual server

The next task in a basic configuration is to define a virtual server that references the pool of IPv6 nodes. You use the Configuration utility to create the virtual server. For more information about configuring a virtual server, see the Configuration Guide for BIG-IP® Local Traffic Management.

To create a virtual server for IPv6 nodes

  1. On the Main tab of the navigation pane, expand Local Traffic, and click Virtual Servers.
    The Virtual Servers screen opens.
  2. In the upper-right corner of the screen, click Create.
    The New Virtual Server screen opens.
  3. Note: If the Create button is unavailable, this indicates that your user role does not grant you permission to create a virtual server.
  4. In the Name box, type a name for the virtual server, such as vs_ipv6.
  5. In the Destination box, verify that the type of virtual server is Host, and in the Address box, type an IP address for the virtual server.
  6. In the Service Port box, type a service number, such as 80, or select a service name, such as HTTP, from the list.
  7. In the Configuration area of the screen, locate the profile setting for the type of traffic you want to load balance, such as HTTP Profile, and select a profile name, such as http.
    This assigns the selected profile to the virtual server.
  8. In the Resources area of the screen, locate the Default Pool setting and select the name of the pool you created in the previous section (for example, ipv6_pool).
  9. Click Finished.



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