I have a quick question regarding MSTP:
Do all the switches in an MSTP domain should agree to which VLANs are mapped to an instance?
Being that dumb, I've just caused an outage by just simply creating a VLAN and adding it to an instance on one of the two core switches. Can you explain what happened when I did that, just want to understand that? Did I have to first add it as a tagged VLAN on the trunk between the core switches?
What is the correct procedure to add a VLAN to MSTP domain?
What I did that caused the trouble:
Switch(config)# vlan 700
Switch(vlan-700)# name test
Switch(config)# spanning-tree instance 1 vlan 700
Switches: HP ProCurve 3500yl