We have a triangle shaped L2 network with three 6513 switches and spanning tree enabled on all vlans to handle loop configuration. Pretty basic I guess. Today the fiber link between our root 6513 and the "secondary" 6513 went down due to supplier error, but everythings OK using the other links previously blocked by STP and I disabled the interfaces on the broken link not to confuse STP if the link comes up.
Now our supplier tells us to start testing the link but I don't want to risk STP sync during office hours. Is there a way to bring up an L2 interface without participating in STP negotiation?