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BFD Tab

Configuration > Networking > Routing > BFD

Bidirectional Forwarding Detection (BFD) is a networking protocol that detects faults between devices. The EdgeConnect appliance supports BFD for both BGP and OSPF.

  • Single and multi-hop BFD configurations are supported.

  • BFD asynchronous mode is supported.

  • BFD can be configured for up to 20 segments with a maximum of 100 simultaneous BFD sessions across all segments.

Configuring BFD for BGP or OSPF is a two-step process:

  1. Click the edit icon for an appliance listed in the BFD table on the BFD tab, and then enable and configure BFD on the BFD dialog box. For details, see BFD Dialog Box.

  2. Enable BFD for each BGP peer or OSPF interface.

    1. For BGP, navigate to Configuration > Networking > Routing > BGP. Click the edit icon for an appliance listed in the BGP table, and then click Add to add a BGP peer or click the edit icon for an existing BGP peer listed in the BGP Peers table. Select the BFD check box, make other changes as appropriate, and then click Add or Save.

    2. For OSPF, navigate to Configuration > Networking > Routing > OSPF. Click the edit icon for an appliance listed in the OSPF table, and then click Add in the Interfaces area to add an interface or click the edit icon for an existing interface listed in the Interfaces table. Select the BFD check box, make other changes as appropriate, and then click Add or Save.

The BFD tab provides two views of BFD information:

  • Click the Summary button on the BFD tab to display configuration details associated with the local appliance. For field descriptions, see BFD Dialog Box.

  • Click the Sessions button to display currently active BFD sessions. BFD establishes a session between two endpoints over a particular link. If more than one link exists between two systems, multiple BFD sessions can be established to monitor each of them.

Filter by Segment

To filter the rows displayed in the BFD table by segment:

  • Select Default from the Segment drop-down list to display for the system-supplied default segment, or

  • Select one of the other listed segments, which reflect the custom segments defined using Routing Segmentation (Configuration > Networking > Routing > Routing Segmentation (VRF)).

Select All to display for all segments, which is the default setting.

The following table describes the fields displayed in the Sessions view of the BFD tab.

Field Description
Appliance Name of the appliance.
Segment Name of the segment. This field displays only if Routing Segmentation is enabled.
Local address IP address of the local endpoint.
Remote address IP address of the remote endpoint.
Local Interface Name of the local interface (lan0, wan0, wan1).
State Session state (UP or DOWN).
Uptime Session up time.
Details Additional details about the BFD session

BFD Dialog Box

Use this dialog box to enable and configure BFD for your appliances, as follows:

  1. Move the toggle to Enable BFD.

  2. Complete the following fields.

Field Description
Min Tx Interval Minimum transmit interval in milliseconds (ms). Specify a value from 300 to 5000. The default setting is 300.
Min Rx Interval Minimum receive interval in milliseconds (ms). Specify a value from 300 to 5000. The default setting is 300.
Detection Multiplier Detection time multiplier. In BFD, the detection time is the transmit interval multiplied by the detection multiplier. If BFD data is not received within the detection time, a failure occurs. Specify a value from 3 to 10. The default setting is 3.

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