| Article Summary: | This article provides information on PowerConnect RSTP interoperability with Cisco PVST+. |
Problem:
PowerConnect spanning-tree mode RSTP is not functioning properly with Cisco switches using spanning-tree mode PVST+.
Solution:
On 802.1Q trunk links connecting PowerConnect switches to Cisco switches VLAN 1 must be added on both sides regardless of the native VLAN configured.
Additional Information:
Cisco switches running PVST+ multicast STP frames on a Cisco STP MC MAC address with the exception of VLAN 1. Only VLAN 1 is sympathetic to the requirements of the IEEE STP MC MAC address.