Manual Chapter : Configuring DHCP Lease Query in Subscriber Management

Applies To:

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BIG-IP PEM

  • 15.0.1, 15.0.0, 14.1.0
Manual Chapter

Configuring DHCP Lease Query in Subscriber Management

Overview: Configuring DHCP lease query

The F5 Policy Enforcement Manager (PEM) obtains DHCP lease information from the DHCP servers, to create new PEM sessions. There is support for both IPv4 and IPv6. When data packets arrive at BIG-IP® system, PEM also uses DHCP lease query to obtain IP lease information and re-create the PEM sessions.
If BIG-IP system goes through a reboot, all PEM sessions, and related lease and subscriber information are lost.

Configuring DHCP lease query in subscriber management

To configure the DHCP lease query, you must first create a listener for DHCPv4 discovery virtual. You can do that by going to
Subscriber Management
Control Plane Listeners
DHCPv4
.
You can enable the DHCP lease query in BIG-IP system in the Subscriber Management profiles screen.
  1. On the Main tab, click
    Subscriber Management
    Profiles
    Subscriber Management
    .
    The Subscriber Management screen opens.
  2. Click
    Create
    .
    The New Subscriber Management Profile screen opens.
  3. In the
    Name
    field, type a unique name for the subscriber management profile.
  4. At the right of the Settings area, select the
    Custom
    check box, and then select
    Enabled
    from the
    DHCP Lease Query
    list to obtain DHCP Lease information.
  5. From the
    DHCP Virtual Server Name
    list, select the DHCP virtual server that you created.
  6. Click
    Finished
    .
    This enables the DHCP Lease Query for the subscriber management profile you created.
  7. On the Main tab, click
    Policy Enforcement
    Data Plane Listeners
    .
    The Date Plane Listeners screen opens.
  8. Click
    Add Group
    .
    The New Virtual Group screen opens.
  9. In the
    Name
    field, type a unique name for the listener.
  10. In the
    Destination Address
    field, type the IP address of the virtual server. For example,
    10.0.0.1
    or
    10.0.0.0/24
    .
    When you use an IPv4 address without specifying a prefix, the BIG-IP system automatically uses a
    /32
    prefix.
    You can use a catch-all virtual server (
    0.0.0.0
    ) to specify all traffic that is delivered to the BIG-IP system. Configure the source and destination setting, during forwarding mode only. In the relay mode, the client does not have an IP address and the DHCP provides the client with an IP address.
    The system will create a virtual server using the address or network you specify.
  11. For the
    Service Port
    setting, type or select the service port for the virtual server.
  12. From the
    VLAN and Tunnel Traffic
    list, select
    Enabled on
    . Then, for the
    VLANs and Tunnels
    setting, move the VLAN or VLANs on which you want to allow the virtual servers to share traffic from the
    Available
    list to the
    Selected
    list.
  13. For the
    VLANs and Tunnels
    setting, move the VLANs and tunnels that you want to monitor for RADIUS traffic from the
    Available
    list to the
    Selected
    list.
  14. From the
    Subscriber Management Profile
    list, select the subscriber management profile that you created.
  15. Click
    Finished
    .
    The Policy Enforcement Manager creates a listener.
You have now configured DHCP Lease Query in the Policy Enforcement Manager.