Confusion about Spanning Tree

dppagcdppagc Member Posts: 293
How many spanning tree types are there?

1) 802.1d - common spanning tree
2) pvst - cisco proprietary
3) pvst+ - supports cisco and 802.1d
4) rapid pvst -has alternate and backup ports
5) MST
6) rapid-pvst+ - ??????

I am a little bit confused. Can anyone help me?

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