Want to test circuit breaker

I want to setup circuit breaker for one of my backend service. I used balancer.linkerd.io/failure-accrual=consecutive annotation.
For the testing purpose, I kept the replica count for the same service as 0 I’m hitting that service by using curl command from another pod. I’m getting following logs for curl -
< HTTP/1.1 504 Gateway Timeout
< l5d-proxy-error: logical service route default.http: backend default.service: service in fail-fast
< connection: close
< l5d-proxy-connection: close
< content-length: 0
< date: Mon, 19 Feb 2024 19:26:35 GMT
Closing connection 0

`Can somebody help me on the same? I want the right way to test my circuit breaker!