Forwarding Database Configuration

About this task

An Forwarding Database forwards or filter packets on behalf of the managing controller, service platform or access point. The bridge reads the packet's destination MAC address and decides to either forward the packet or drop (filter) it. If it's determined the destination MAC is on a different network segment, it forwards the packet to the segment. If the destination MAC is on the same network segment, the packet is dropped (filtered). As nodes transmit packets through the bridge, the bridge updates its forwarding database with known MAC addresses and their locations on the network. This information is then used to decide to filter or forward the packet.

To define a forwarding database configuration:

Procedure

  1. Go to Configuration → Devices.

    The Device Configuration screen displays. This screen lists wireless controllers, service platforms and access points within the managed network.

  2. Select a device from the list displayed.

    The selected device's configuration screen displays.

  3. Expand Profile Overrides → Network and select Forwarding Database.

    The Forwarding Database configuration screen displays.

    Click to expand in new window
    Network - Forwarding Database screen
    GUID-F53D1DCE-EF52-44BF-9D09-84DFCDC18229-low.png
  4. Define a Bridge Aging Time from 0, 10-1,000,000 seconds.

    The aging time defines the length of time an entry will remain in the bridge‘s forwarding table before it is deleted due to lack of activity. If an entry replenishments a destination, generating continuous traffic, this timeout value will never be invoked. However, if the destination becomes idle, the timeout value represents the length of time that must be exceeded before an entry is deleted from the forwarding table. The default setting is 300 seconds.

  5. Use the +Add Row button to create a new row within the Static Forwarding Table.
  6. Set or override a destination MAC Address.

    The bridge reads the packet's destination MAC address and decides to forward the packet or drop (filter) it. If it's determined the destination MAC is on a different network, it forwards the packet to the segment. If the destination MAC is on the same network segment, the packet is dropped (filtered).

  7. Define the target VLAN ID if the destination MAC is on a different network segment.
  8. Provide an Interface Name used as the target destination interface for the target MAC address.
  9. Click OK to save the changes.

    Click Reset to revert to the last saved configuration.

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