# ClusterOptions Fields

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.configuration.clusteroptions/)

## DefaultClusterId {#defaultclusterid-5a374ea2}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.configuration.clusteroptions/fields/defaultclusterid-5a374ea2/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core/Configuration/Options/ClusterOptions.cs)

```csharp
public const string DefaultClusterId
```

The default value of [ClusterOptions](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.configuration.clusteroptions/).

## DefaultServiceId {#defaultserviceid-28d887ef}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.configuration.clusteroptions/fields/defaultserviceid-28d887ef/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core/Configuration/Options/ClusterOptions.cs)

```csharp
public const string DefaultServiceId
```

The default value of [ClusterOptions](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.configuration.clusteroptions/).