Native vlan mismatch detected on interface. Make sure you verify before inpu...

Native vlan mismatch detected on interface. Make sure you verify before inputting that the range doesn't include a pre-configured port, or you'll just continually overwrite them. 1. Any help would be appreciated @francisco4583 Jan 23, 2018 · DTP does not detect a native VLAN mismatch. CDP will only report the error, but has no mechanism of blocking (as expected) or correcting the misconfiguration. For example: SwitchA (Port1)----trunk port ------- SwitchB (Port2) are connected than where is a mistake: Switch A Jul 1, 2025 · 2. Dec 11, 2018 · In the Syslog Native VLAN Mismatch field, check the Enable checkbox to send a syslog message when a native VLAN mismatch is detected on the port specified. Sep 11, 2025 · Native VLAN Mismatch: When a switch’s interfaces have distinct native VLANs, untagged traffic may be diverted. This leads to security risks, misrouted traffic, and troubleshooting nightmares. This means that your locally created vlan’s differ between switch-to-switch. May 13, 2013 · Spanning-tree is the protocol used to keep network loops from occurring in your layer 2 / bridged systems.