Is it true that, when BackboneFast is enabled, the switch that lost connection to its root bridge will do two things.
- It will send an RLQ reply out all other ports connected (does it also send it to the root port? it will have no effect anyway due to loss of connection?)
- It will send inferior BPDU claiming it is the new root bridge to all other ports connected (except the root port?)
Without BackboneFast, it will only do point two above?
Suppose what I said above is not entirely wrong - but please correct me on spot. The other benefit, brought by BackboneFast, in addition to point one from above, is to get rid of the max-age timing constraints concerning both points one and two? e.g. The switch that lost connection to root bridge will send an RLQ reply and an interior BPDU to claim itself as the new root bridge, without having to wait for the max-age to expire - waiting for the BPDU from its current root bridge to lose effect.
AND in addition, for the downstream switch, it will also act immediately, when receiving either an RLQ reply or an inferior BPDU on its blocked port, such that it will relay the superior BPDU(from the current root bridge) to the switch that lost connection to the current root bridge in order to find a new root port for that switch?
I know the above may not sound like a straight forward question to answer, but could anyone please pick the false statement from above?