# UNIMPLEMENTED gRPC Error with P4Runtime Controller on UfiSpace Tofino (S9180-32X) – Need Help Verifying Compatibility

**URL:** <https://forum.p4.org/t/unimplemented-grpc-error-with-p4runtime-controller-on-ufispace-tofino-s9180-32x-need-help-verifying-compatibility/1341>\
**Category:** Uncategorized\
**Created:** [July 3, 2025, 3:10pm UTC](https://forum.p4.org/t/unimplemented-grpc-error-with-p4runtime-controller-on-ufispace-tofino-s9180-32x-need-help-verifying-compatibility/1341 "2025-07-03T15:10:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![AL-OTU](https://avatars.discourse-cdn.com/v4/letter/a/35a633/32.png) [@AL-OTU](https://forum.p4.org/u/AL-OTU)\
**Post date:** [July 3, 2025, 3:10pm UTC](https://forum.p4.org/t/unimplemented-grpc-error-with-p4runtime-controller-on-ufispace-tofino-s9180-32x-need-help-verifying-compatibility/1341/1 "2025-07-03T15:10:00Z")

</div>

Hi everyone,

I’m currently working on a P4 development internship using a UfiSpace S9180-32X switch, which is based on the Tofino (Tofino 1) ASIC. I’m trying to run a real P4 network using this hardware, and I’ve run into a gRPC `UNIMPLEMENTED` error when my external P4Runtime controller attempts to push the pipeline.

Here’s my setup:

- **Switch:** UfiSpace S9180-32X (Tofino 1)
- **SDE:** bf-sde-9.13.1
- **P4 Program:** basic\_switching.p4 (compiled and launched using `run_switchd.sh -p basic_switching`)
- **Controller:** Custom Python-based controller using the P4Runtime gRPC API (based on the official `p4runtime_lib` examples)
- **Switchd gRPC port:** 50052 is open and reachable from the controller VM

The switch launches fine and `bf_switchd` appears healthy. But when the controller sends `SetForwardingPipelineConfig`, I get this:

```auto
gRPC Error: UNIMPLEMENTED

```

* * *

### What I’ve Tried:

- Confirmed switch and controller can ping each other.
- Verified `bf_switchd` is running with the correct pipeline and config.
- Used `p4studio build basic_switching` followed by `run_switchd.sh`.
- Checked for active services on port 50052.

* * *

### My Questions:

1. Has anyone successfully used **P4Runtime with UfiSpace (S9180-32X)** switches and an **external controller**?
2. Is there a known limitation or config requirement to enable P4Runtime support on this device?
3. Do I need to use a specific profile or modify `switch.conf` to expose P4Runtime services?

I’ve reached out to STORDIS and UfiSpace but haven’t received a response yet, so I’d really appreciate any community insight.

Thanks in advance!