> Source: [sk1000163](https://support.checkpoint.com/results/sk/sk1000163)

# sk1000163 - SFP+ fiber port optical power and threshold values appear invalid

| Property | Value |
|----------|-------|
| Solution ID | sk1000163 |
| Date Created | 2026-09-17 |
| Last Modified | 2026-09-24 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R82.10 |
| Platform | 3000 |

## Symptoms

- * The CLISH command `> show interface ethX xcvr_detail` does not show valid optical power readings for Small Form-Factor Pluggable Plus (SFP+)   
* Fiber ports display incorrect optical power and threshold values, for example:

```
Tx Power -inf dBm 3.29 dBm 3.23 dBm 2.36 dBm 3.24 dBmRx Power -inf dBm 0.72 dBm -0.85 dBm -inf dBm 5.68 dBm
```

* Network traffic continues to pass normally through the affected interfaces.
* The issue affects only the visibility of optical diagnostics.

## Cause

A software condition prevents the system from reading the actual optical values from the SFP+ module. As a result, incorrect optical power and threshold values are displayed.

## Solution

<br />

[Contact Check Point Support](https://www.checkpoint.com/support-services/contact-support/) to get a Hotfix for this issue.

A Support Engineer will make sure the Hotfix is compatible with your environment before providing it.  
For faster resolution and verification, collect these files:

1. [CPinfo](https://support.checkpoint.com/results/sk/sk92739) file from the Management Server involved in the case.
2. [CPinfo](https://support.checkpoint.com/results/sk/sk92739) file from the Check Point Firewall / each Cluster Member / Security Group involved in the case.

**Hotfix installation instructions:**   
Refer to [sk168597 - How to install a Hotfix](https://support.checkpoint.com/results/sk/sk168597).

<br />

**Note:** After the Hotfix is installed, the output no longer shows misleading optical diagnostic values. The output displays an informational message indicating that SFP diagnostic information is not available.  

<br />

---

# Agent Instructions

This content is from the Check Point Support Center (https://support.checkpoint.com), the official knowledge base for Check Point cybersecurity products.

## Navigating This Knowledge Base

- **Complete index**: [llms.txt](https://support.checkpoint.com/llms.txt)
- **All SK articles**: [SecureKnowledge Sitemap](https://support.checkpoint.com/sitemaps/secureknowledge-sitemap-index.xml)
- **SK article URL pattern**: `https://support.checkpoint.com/results/sk/{skId}`
- **Markdown responses**: AI bot User-Agents automatically receive `text/markdown` content