Dell FCX624-E Laptop User Manual


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PowerConnect B-Series FCX Configuration Guide 207
53-1002266-01
Chapter
8
Configuring Spanning Tree Protocol (STP) Related Features
Table 46 lists the individual Dell PowerConnect switches and the Spanning Tree Protocol (STP)
features they support.
STP overview
The Spanning Tree Protocol (STP) eliminates Layer 2 loops in networks, by selectively blocking
some ports and allowing other ports to forward traffic, based on global (bridge) and local (port)
parameters you can configure.
STP related features, such as RSTP and PVST, extend the operation of standard STP, enabling you
to fine-tune standard STP and avoid some of its limitations.
You can enable or disable STP on a global basis (for the entire device), a port-based VLAN basis (for
the individual Layer 2 broadcast domain), or an individual port basis.
Configuration procedures are provided for the standard STP bridge and port parameters as well as
Dell features listed in Table 52.
TABLE 46 Supported STP features
Feature PowerConnect B-Series FCX
802.1s Multiple Spanning Tree Yes
802.1W Rapid Spanning Tree (RSTP) Yes
802.1D Spanning Tree Support Yes
Enhanced IronSpan support includes
Fast Port Span, Fast Uplink Span, and
Single-instance Span
Yes
PowerConnect Layer 2 devices
(switches) support up to 254 spanning
tree instances for VLANs.
Yes
PowerConnect Layer 3 devices (routers)
support up to 254 spanning tree
instances for VLANs.
Yes
PVST/PVST+ compatibility Yes
PVRST+ compatibility Yes
BPDU Guard Yes
Root Guard Yes
Error disable recovery Yes