I have question regarding migration from classic PVST to Rapid-PVST. My Layer2 network diagram:
customers | | 2950G | ge | 3560G--ge--3750G---ge---7304 / | | ge | | / | | customers---3550 ge ge \\ | | ge | | \\ | | 2960G--ge--3560G---ge---7304 / \\ ge ge / \\ customers--2950G 2950G--customers All above switches are working in same VTP domain, so they have same VLANs database (currently about 60 VLANs). 3750G switch is root-bridge for all VLANs, core-switches (2960G,2x3560G,3750G) carring VLANs from access-switches (3550, 3x2950G) to edge routers (2x7304).
How procedure of migration to Rapid-PVST should looks ? Should I first upgrade core switches and next access-switches ? Is this migration bring some outages in network (eg. caused by spanning-tree recalcuations).
Thanks for help, Robert