Notable fabric intent configuration values

When generating node configurations for any fabric intent, the Fabric Services System automatically assigns values to numerous parameters. Some of these values are selected to better support certain anticipated network configurations.

This section describes some of those configurations and their purpose.

Note: To view the full configuration details for any node within a fabric intent, including all automatic inclusions described here, right-click the node in the fabric intent topology view and click Inspect Configuration.

Bidirectional forwarding detection (BFD)

The Fabric Services System enables BFD for all ISL interfaces:

"bfd": {
	{
		"admin-state": 'enable"
		"id": <interface>
	}
}

To support BFD on the iBGP peering sessions for EVPN route advertisement, the system also enables BFD on the management interface (system0.0):

bfd subinterface system0.0 admin-state enable
 
bfd subinterface system0.0 desired-minimum-transmit-interval 100000
 
bfd subinterface system0.0 required-minimum-receive 100000
 
bfd subinterface system0.0 detection-multiplier 3
 
bfd subinterface system0.0 minimum-echo-receive-interval 0

Note: The automatic enabling of BFD on management interface was introduced as part of the Fabric Services System Release 22.8. If you upgrade to Release 22.8, existing fabrics are not automatically modified to enable BFD in this way. For an existing fabric to benefit from this automatic configuration, you must regenerate and redeploy the fabric intent.