Which two spanning-tree port states does RSTP combine to allow faster convergence?

2 thoughts on “Which two spanning-tree port states does RSTP combine to allow faster convergence?”

1. First, you should think of STP and RSTP as different protocols, as essentially they are different protocols.

   STP – Originally defined in 802.1D

   RSTP – Originally defined in 802.1W

   RSTP (802.1W) uses a proposal exchange process to “proactively” prevent switching loops from forming. This eliminates the need for a lengthy listening and blocking period, which is used by 802.1D (STP). RSTP works differently than STP to allow for faster convergence. One of the ways it does this is by skipping (or combining) the blocking and listening states (used by STP).

   Basically, where STP would perform blocking and then listening, RSTP just performs discarding.

   Check out this chart here to see what I mean: http://ericleahy.com/wp-content/uploads/2011/06/RSTP-Ports.jpg

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2. i dont understand this question

   all the matereal i learn from i have see that

   in RSTP have only discarding learning and forwarding

   so how this question say A and B somebody can tell me how RSTP combine blocking listening
   B. listening

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