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# NWProtocolIP.ECN

Flag values for Explicit Congestion Notifications in IP packets.

```
enum ECN
```

## Topics

### ECN Flags

[`case nonECT`](/documentation/Network/NWProtocolIP/ECN/nonECT)

Non-ECN Capable Transport.

[`case ect0`](/documentation/Network/NWProtocolIP/ECN/ect0)

ECN Capable Transport (flag 0).

[`case ect1`](/documentation/Network/NWProtocolIP/ECN/ect1)

ECN Capable Transport (flag 1).

[`case ce`](/documentation/Network/NWProtocolIP/ECN/ce)

Congestion Experienced.

## Relationships

### Conforms To

[`Equatable`](/documentation/Swift/Equatable)

[`Hashable`](/documentation/Swift/Hashable)

---

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