Licensing Requirements and Limitations for BFD
Involved Network Elements
Other network elements are required to support BFD functions.
Licensing Requirements
BFD is a basic feature of a switch and is not under license control.
Feature Support in V200R019C10
All models of S9300 and S9300X series switches support BFD.
Feature Limitations
If a loop occurs on the path detected by BFD, the change of the network topology where the loop exists may cause the BFD session to flap at one time.
In V200R013 and earlier versions, when BFD is bound to a sub-interface, only dot1q terminal sub-interface supports BFD function.
When the BFD session is bound to the Eth-Trunk and the detection time is less than 300 ms, you are not advised to add or delete Eth-Trunk member interfaces. Otherwise, the BFD session may flap.
- The MPU is equipped with the LE0MFSUA subcard or the MPU is LH2D2SRUDC00, LE2D2SRUDC01, LST3MPUE0000, or LST3MPUE0001.
- For the S9306 and S9312, you need to first run the assign system-resource-mode static command to configure the switch to statically allocate module resources.
In BFD for VXLAN scenarios, the encapsulation type can be set to QinQ for Layer 2 sub-interfaces on the access side only on X series cards.