Dell Force10 S55T S55 Configuration Guide FTOS 8.3.5.3 - Page 428

www.dell.com | support.dell.com FTOS supports three other variations of Spanning Tree, as shown in Table 44. Table 22-1. FTOS Supported Spanning Tree Protocols Dell Force10 Term Spanning Tree Protocol Rapid Spanning Tree Protocol Multiple Spanning Tree Protocol Per-VLAN Spanning Tree Plus IEEE Specification 802.1d 802.1w 802.1s Third Party 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 C-Series and S-Series, 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. See page 703. 2. Place the interfaces in VLANs. 3. Enable Multiple Spanning Tree Protocol. See page 429. 4. Create Multiple Spanning Tree Instances, and map VLANs to them. See page 429. Related Configuration Tasks • Create Multiple Spanning Tree Instances on page 429 • Add and Remove Interfaces on page 429 • Influence MSTP Root Selection on page 431 • Interoperate with Non-FTOS Bridges on page 431 • Modify Global Parameters on page 432 • Modify Interface Parameters on page 433 • Configure an EdgePort on page 434 • Flush MAC Addresses after a Topology Change on page 435 • Debugging and Verifying MSTP Configuration on page 440 • Preventing Network Disruptions with BPDU Guard on page 711 428 | Multiple Spanning Tree Protocol