Table 38-1. FTOS Supported Spanning Tree Protocols
Dell Force10 Term
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. To set up VLANs, see
Chapter 53, Virtual LANs
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 807.
Related Configuration Tasks
•
Modify Global PVST+ Parameters on page 809
•
Modify Interface PVST+ Parameters on page 810
•
Configure an EdgePort on page 811
•
Flush MAC Addresses after a Topology Change on page 701
•
Preventing Network Disruptions with BPDU Guard on page 1011
•
SNMP Traps for Root Elections and Topology Changes on page 1016
•
Configuring Spanning Trees as Hitless on page 1017
•
PVST+ in Multi-vendor Networks on page 812
•
PVST+ Extended System ID on page 812
•
PVST+ Sample Configurations on page 813
806
|
Per-VLAN Spanning Tree Plus (PVST+)
IEEE Specification
802.1s
Third Party
Configure Ingress Layer 2 ACL Sub-partitions on page
(VLAN).
2.
page 807.
(Table
38-2). Other
287.