Date Identified

January 11, 2017

Date Resolved

June 5, 2017

Products Affected

Model

Firmware Version

Fixed In

SG550XG

2.2.5.68

2.3.0.130

Problem Description

If you learn a new voice Virtual Local Area Network (VLAN) greater than 1024 through Voice Services Discovery Protocol (VSDP), all existing VLANs will be removed from the running configuration. When this happens, existing VLANs are still valid but entering a show running-config command will not display them.

Resolution

This issue is fixed when you upgrade to the firmware version 2.3.0.130.