Spanning Tree Variations; Implementation Information; Configure Multiple Spanning Tree Protocol; Related Configuration Tasks - Dell S4820T Configuration Manual

Spanning Tree Variations

The Dell Networking OS supports four variations of spanning tree, as shown in the following table.
Table 52. Spanning Tree Variations
Dell Networking Term
Spanning Tree Protocol (STP)
Rapid Spanning Tree Protocol (RSTP)
Multiple Spanning Tree Protocol (MSTP)
Per-VLAN Spanning Tree Plus (PVST+)

Implementation Information

The following describes the MSTP implementation information.
• The Dell Networking OS MSTP implementation is based on IEEE 802.1Q-2003 and interoperates only
with bridges that also use this standard implementation.
• MSTP is compatible with STP and RSTP.
• Dell Networking OS supports only one MSTP region.
• When you enable MSTP, all ports in Layer 2 mode participate in MSTP.
• You can configure 64 MSTIs including the default instance 0 (CIST).

Configure Multiple Spanning Tree Protocol

Configuring multiple spanning tree is a four-step process.
1. Configure interfaces for Layer 2.
2. Place the interfaces in VLANs.
3. Enable the multiple spanning tree protocol.
4. Create multiple spanning tree instances and map VLANs to them.

Related Configuration Tasks

The following are the related configuration tasks for MSTP.
• Creating Multiple Spanning Tree Instances
• Adding and Removing Interfaces
• Influencing MSTP Root Selection
• Interoperate with Non-Dell Networking OS Bridges
• Changing the Region Name or Revision
• Modifying Global Parameters
• Modifying the Interface Parameters
Multiple Spanning Tree Protocol (MSTP)
IEEE Specification
802 .1d
802 .1w
802 .1s
Third Party
647