I have the following statements in my config:
spanning-tree vlan 1,20,27-28,30,32-64 priority 28672
spanning-tree vlan 72-88,90,92,96-101,104,106,160-163,200,202 priority 24576
spanning-tree vlan 204,206,250-251,254-255,264,800,980,999,1030 priority 24576
These were put in from when the switch was originally installed a few months ago. Now I want to add a vlan with a priority of 24576.
Will it just append itself to one of the existing lines or will it create a new statement? Spanning tree is a bit of an issue here and I don't want to make any changes that might cause a massive reconvergence of the network.
Doesn't really matter whether it adds it to existing line or creates new one. What does matter is if you change the priority of a switch for that vlan STP will need to recalculate for that vlan and only that vlan. So this sort of thing is best done out of core production hours.