The Dell Force10 operating software (FTOS) supports three other variations of Spanning Tree
(Table
19-1).
Table 19-1. FTOS Supported Spanning Tree Protocols
Dell Force10 Term
Spanning Tree Protocol
Rapid Spanning Tree Protocol
Multiple Spanning Tree Protocol
Per-VLAN Spanning Tree Plus
Implementation Information
•
The FTOS 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.
•
FTOS supports only one MSTP region.
•
When you enable MSTP, all ports in Layer 2 mode participate in MSTP.
•
On the MXL Switch, 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 MSTP
4. Create MSTP instances and map VLANs to them.
Related Configuration Tasks
•
Create Multiple Spanning Tree Instances
•
Create Multiple Spanning Tree Instances
•
Influence MSTP Root Selection
•
Interoperate with Non-FTOS Bridges
•
Modify Global Parameters
•
Enable BPDU Filtering globally
•
Enable BPDU Filtering globally
•
Configure an EdgePort
•
Flush MAC Addresses after a Topology Change
•
Debugging and Verifying an MSTP Configuration
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Multiple Spanning Tree Protocol (MSTP)
IEEE Specification
802.1d
802.1w
802.1s
Third Party