Which step is part of initial InfiniBand provisioning?
Why C is the answer
Enable a subnet manager, with HA
Initial InfiniBand provisioning includes enabling a subnet manager, with high availability.
In detail
- Initial provisioning includes high availability.
- Add HA from the start.
Use case
An illustrative scenario, not a real incident.
A team enables a subnet manager with HA as part of provisioning.
See it in different ways
flowchart LR A["Discover fabric"] --> B["Assign LIDs"] B --> C["Program routing tables"] C --> D["Ports go Active"] D --> E["Standby SM takes over on failure"]
sequenceDiagram participant M as Master SM participant S as Standby SM participant F as Fabric M->>F: Configures the fabric S->>M: Checks that it is alive S->>F: Takes over if the master fails
flowchart LR S0["Enable SM"] --> S1["Add standby"] --> S2["Check ports"]
Key point: Provisioning includes an SM with HA.
Why the other options are wrong
- A. Assign BGP ASNs to each host
- ASNs are for BGP.
- B. Configure PFC on all IB links
- PFC is for Ethernet.
- D. Install Slurm on every switch
- Switches do not run Slurm.