The seamless-bfd tunnel command sets seamless bidirectional forwarding detection (SBFD) parameters for Segment Routing tunnels.
The undo seamless-bfd tunnel command deletes SBFD parameters for Segment Routing tunnels.
By default, no SBFD parameters are set for SR tunnels.
| Parameter | Description | Value |
|---|---|---|
| min-tx-interval transmit-interval |
Specifies the minimum interval for sending BFD packets to the peer. |
The value is an integer ranging from 3 to 20000, in milliseconds. The default value is 10. |
| min-rx-interval receive-interval |
Specifies the minimum interval at which SBFD packets are received from the peer. In SBFD scenarios, the min-rx-interval <receive-interval>parameter does not take effect. |
The value is an integer ranging from 3 to 20000, in milliseconds. The default value is 10. |
| detect-multiplier multiplier-value |
Specifies the local detection multiplier. |
The value is an integer ranging from 3 to 50. The default value is 3. |
| tunnel |
Specifies an SR tunnel. |
- |
Usage Scenario
BFD is a mature technology. When a large number of BFD sessions are configured to monitor links, the negotiation time of the existing BFD state machine is lengthened. In this situation, SBFD can be configured to monitor SR tunnels. It is a simplified BFD state machine that shortens the negotiation time and improves network-wide flexibility. To adjust SBFD parameters, run the seamless-bfd tunnel command in the Segment Routing view to adapt to various networks.
Prerequisites
Before running the seamless-bfd tunnel command, you need to run the bfd, sbfd, and seamless-bfd enable commands.
<HUAWEI> system-view [~HUAWEI] bfd [*HUAWEI-bfd] quit [*HUAWEI] sbfd [*HUAWEI-sbfd] quit [*HUAWEI] segment-routing [*HUAWEI-segment-routing] seamless-bfd enable mode tunnel [*HUAWEI-segment-routing] seamless-bfd tunnel min-tx-interval 300