I was able to get the 2 PC's to ping each other by using these commands:
[SWITCH 1]
config
interface 45,47 disable
trunk 45,47 trk1 lacp
interface trk1 tagged vlan 2
interface 45,47 enable
[SWITCH 3]
config
interface 21,23 disable
trunk 21,23 trk1 lacp
interface trk1 tagged vlan 2
interface 21,23 enable
Is it normal that I can't access the management VLAN now that those ports have been tagged for Trk1? For example: If I have my laptop plugged into port 45 on switch 1, I cannot access the switches web interface.
Thank you for all of your help, it's much appreciated.