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About spanning tree groups

8000 Series switches support STP as defined in IEEE 802.1D. In addition, an 8000 Series switch can support a spanning tree group (STG), which is a collection of ports that belong to the same instance of an STP.

For 8600 modules, multiple STGs are possible within the same switch; that is, the routing switch can participate in the negotiation for multiple spanning trees.

• About Spanning Tree protocol (STP)
• Understanding STGs and VLANs
• About Spanning Tree protocol topology change detection
• Topology change detection configuration rules
• Creating an STG