> Source: [sk183157](https://support.checkpoint.com/results/sk/sk183157)

# sk183157 - "Error in packet" error on SNMP query to the DPLANE after an upgrade

| Property | Value |
|----------|-------|
| Solution ID | sk183157 |
| Date Created | 2025-02-18 |
| Last Modified | 2025-06-30 |
| Technical Level | Advanced |
| Products | Security Gateway, Scalable Platforms |
| Versions | R81.20, R81.20 |
| OS | Gaia |

## Symptoms

- After an upgrade, an SNMP query to the DPLANE fails, for example:  

```

[Expert@Lab1:mplane]# snmpwalk  -v 3 -l authPriv -u snmptest -a SHA512 -A vpn12345 -x AES256 -X 
vpn12345 -n dplane localhost 1.3.6.1.2.1 | head -n 15

Error in packet.

Reason: authorizationError (access denied to that object)
```

<br />

## Cause

Missing configuration in the */etc/snmpd/snmpd.conf* file.

In a rare scenario, when the MDPS toggles during the upgrade, the MDPS is not updated in the file.

Example with missing configuration:
`group snmptest_group usm snmptest`  
`access snmptest_group "" usm priv exact systemview none none`  
`access snmptest_group ctxname_vsid1 usm priv exact systemview none none`  
`access snmptest_group vsid1 usm priv exact systemview none none`  

Example of a good configuration:
`group snmptest_group usm snmptest`  
`access snmptest_group "" usm priv exact systemview none none`  
`access snmptest_group dplane usm priv exact systemview none none`  
`access snmptest_group ctxname_vsid0 usm priv exact systemview none none`  
`access snmptest_group vsid0 usm priv exact systemview none none`

## Solution

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