- There is a risk that the switch may cause incorrect VLAN information to be sent through the domain.*
- VLAN configuration changes made on this switch will be sent to other devices in the VTP domain.
- The other switches in the domain can be running either VTP version 1 or 2.
- This switch will update its VLAN configuration when VLAN changes are made on a VTP server in the same domain.*
- VTP will block frame forwarding on at least one redundant trunk port that is configured on this switch.
Explanation: If a switch on the same VTP domain is added to the network and the switch has a higher configuration revision number, valid VLANs can be deleted and VLANs from the new switch can be sent to other switches in the VTP domain. This can result in loss of connectivity for some network devices. Always put a false domain name on a new switch and then change the VTP domain name to the correct one so the configuration revision number will be at 0 on the switch to be added.