Thursday, June 3, 2010

PVST

Per-VLAN Spanning Tree:
  • Cisco proprietary
  • Where multiple VLANS exist, Spanning Tree is deployed on each VLAN.
  • Only works with ISL (Cisco Protocol for VLAN encapsulation)
  • PVST+ was created due to 802.1Q encapsulation becoming dominant instead of ISL and to tunnel across a MSTP region

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