Good morning everyone!
Some history, we have mixed environment of Dell Powerconnect 6248 switches and Cisco 3750 switches and a Cisco 6500 core for our Head office.
We have two VLANs 1 & 20 where 20 is used for our VoIP, therefore ports need to be configured to see both VLAN 1 & 20 so there were configured as trunk ports. However, because it is configured as a trunk port, PortFast will not be enabled.
The reason we are trying to trying to enable PortFast because STP is reporting topology changes in seconds! We want to clear up those entries in the logs to help resolve a VoIP issue where calls would intermittently drop.
Any ideas or suggestions will be greatly appreciated!