FTOS supports three other variations of Spanning Tree, as shown in
Table 40-1. 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 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 837.
Related Configuration Tasks
•
Modify Global PVST+ Parameters on page 840
•
Modify Interface PVST+ Parameters on page 840
•
Configure an EdgePort on page 841
•
Flush MAC Addresses after a Topology Change on page 654
•
Preventing Network Disruptions with BPDU Guard on page 1057
•
Configuring Spanning Trees as Hitless on page 1064
•
PVST+ in Multi-vendor Networks on page 845
•
PVST+ Extended System ID on page 845
•
PVST+ Sample Configurations on page 847
836
|
Per-VLAN Spanning Tree Plus
IEEE Specification
802.1d
802.1w
802.1s
Third Party
Configure Ingress Layer 2 ACL Sub-partitions on page
2.
page 837.
Table
40-1.
(Table
40-2). Other
295.