Spanning tree – RSTP/PVST/STP/MSTP

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Cisco and Force10 – STP Spanning Tree Interoperability

. Cisco Implements a proprietary flavor of spanning tree protocol, which is Per-VLAN in nature. This gives rise to certain considerations in a multi-vendor environment. Any third party switches that implement STP based on the IEEE standard, have a spanning tree implementation that has a single instance span the entire switch, regardless of the number of VLANs … Continue reading