# tt_ethernet_uncorrected_codeword_count

[<< Home](../index.md) | [<< Metrics](../metrics.md)

## Name

### Prometheus Metric Name

```
tt_ethernet_uncorrected_codeword_count
```

### Metric Path (tt-telemetry)

Schema:

```
{hostname}/tray{tray}/chip{chip}/channel{channel}/tt_ethernet_uncorrected_codeword_count
```

Example path:

```
wh-glx-c09u02/tray1/chip2/channel0/tt_ethernet_uncorrected_codeword_count
```

## Description

The number of uncorrected codewords on a specific Ethernet channel. An uncorrected codeword means an error was detected but could not be corrected by the forward error correction (FEC) mechanism, indicating a more severe data integrity issue. This metric is available on Wormhole B0 and Blackhole devices. On Wormhole B0 the value is a 64-bit counter constructed from two 32-bit device memory reads; on Blackhole it is read as a single 64-bit value from `boot_results.eth_live_status.uncorr_cw`.

## Values

**Type:** Unsigned Integer

**Units:** None

**Allowable values:**
A non-negative 64-bit integer representing the cumulative count of uncorrected codewords. Any non-zero value warrants investigation.

## Prometheus Labels

|Label Name|Value|
|---|---|
|hostname|The host from which the metric was collected.|
|hall|The datacenter hall where the host is located. Sourced from the Factory System Descriptor (FSD).|
|aisle|The datacenter aisle where the host is located. Sourced from the Factory System Descriptor (FSD).|
|rack|The rack number where the host is located. Sourced from the Factory System Descriptor (FSD).|
|shelf_u|The shelf U position in the rack where the host is located. Sourced from the Factory System Descriptor (FSD).|
|tray|The tray (UBB) that the device is located on.|
|chip|The ASIC location within the tray.|
|channel|The Ethernet channel number on the chip.|
|port_type|The physical port type (e.g., QSFP, backplane). Present when topology information is available.|
|port_id|The physical port ID. Present when topology information is available.|
|remote_hostname|The hostname of the remote endpoint. Present when remote endpoint information is available.|
|remote_tray|The tray number of the remote endpoint. Present when remote endpoint information is available.|
|remote_chip|The ASIC location of the remote endpoint. Present when remote endpoint information is available.|
|remote_channel|The Ethernet channel of the remote endpoint. Present when remote endpoint information is available.|
|remote_hall|The datacenter hall of the remote endpoint. Present when remote endpoint information is available.|
|remote_aisle|The datacenter aisle of the remote endpoint. Present when remote endpoint information is available.|
|remote_rack|The rack number of the remote endpoint. Present when remote endpoint information is available.|
|remote_shelf_u|The shelf U position of the remote endpoint. Present when remote endpoint information is available.|