Configure Per-Vlan Spanning Tree Plus; Implementation Information; Related Configuration Tasks - Dell Force10 Z9000 Configuration Manual

FTOS supports three other variations of Spanning Tree, as shown in
Table 34-1. FTOS Supported Spanning Tree Protocols
Dell Force10Term
Spanning Tree Protocol (STP)
Rapid Spanning Tree Protocol (RSTP)
Multiple Spanning Tree Protocol (MSTP)
Per-VLAN Spanning Tree Plus (PVST+)

Implementation Information

• The FTOS implementation of PVST+ is based on IEEE Standard 802.1d.
• The FTOS implementation of PVST+ uses IEEE 802.1s costs as the default costs
implementations use IEEE 802.1d costs as the default costs if you are using Dell Force10 systems in a
multi-vendor network, verify that the costs are values you intended.
• You must allocate at least the default minimum amount of Layer 2 ACL CAM space when employing
PVST+ on the E-Series. See
• On the C-Series and S-Series, you can enable PVST+ on 254 VLANs.

Configure Per-VLAN Spanning Tree Plus

Configuring PVST+ is a four-step process:
1. Configure interfaces for Layer
2. Place the interfaces in VLANs.
3. Enable PVST+. See
4. Optionally, for load balancing, select a non-default bridge-priority for a VLAN. See page 711.

Related Configuration Tasks

• Modify Global PVST+ Parameters on page 713
• Modify Interface PVST+ Parameters on page 714
• Configure an EdgePort on page 715
• Flush MAC Addresses after a Topology Change on page 599
• Preventing Network Disruptions with BPDU Guard on page 883
• SNMP Traps for Root Elections and Topology Changes on page 886
• Configuring Spanning Trees as Hitless on page 886
| Per-VLAN Spanning Tree Plus (PVST+)
710
IEEE Specification
802.1d
802.1w
802.1s
Third Party
Configure Ingress Layer 2 ACL Sub-partitions on page
2.
page 711.
Table 34-1.
(Table 34-2). Other
273.