The segment-routing sbfd source-address command configures an SBFD source address for the IS-IS process.
The undo segment-routing sbfd source-address command deletes the SBFD source address configured for the IS-IS process.
By default, no SBFD source address is configured for IS-IS.
| Parameter | Description | Value |
|---|---|---|
| ip-address |
Specifies an SBFD source address. |
The value is in dotted decimal notation. The source IP address cannot be an invalid IP address, for example, an IP address on network segment 10.1.1.1 or 127. The source IP address must be a class A, B, or C address in the same range as an MPLS LSR ID. |
Usage Scenario
By default, an MPLS LSR ID is used to create an SBFD session. During SBFD deployment, only an LSR ID can be used as the SBFD session source, and the source belongs to only one IS-IS process. As a result, route import must be used in multi-process scenarios, otherwise, SBFD cannot take effect. When route import is disabled during process isolation, different sources can be used to establish SBFD sessions in different IS-IS processes. You can run the segment-routing sbfd source-address command to specify the source addresses of different processes so that the source can be selected based on the IS-IS process to support the dynamic creation of SBFD sessions.
Precautions
Before establishing an SBFD session, you need to configure SBFD globally and run the seamless-bfd enable command to configure SBFD for the SR-MPLS BE tunnel. Then, SBFD can be used to monitor the SR-MPLS BE tunnel.