
Spanning Tree Protocol
● Supported STP features................................................................................................251
● STP overview................................................................................................................ 252
● Standard STP parameter configuration.........................................................................252
● STP feature configuration............................................................................................. 266
● PVST/PVST+ compatibility............................................................................................317
● PVRST compatibility..................................................................................................... 323
● BPDU guard.................................................................................................................. 323
● Root guard.................................................................................................................... 326
● Designated Protection...................................................................................................327
● Error disable recovery................................................................................................... 328
● 802.1s Multiple Spanning Tree Protocol....................................................................... 330
Supported STP features
Lists Spanning Tree Protocol features supported on FastIron devices.
The following table lists the individual Brocade FastIron switches and the Spanning Tree Protocol (STP)
features they support. These features are supported in the Layer 2 and Layer 3 software images,
except where explicitly noted.
Feature ICX 6430 ICX 6450 FCX ICX 6610 ICX 6650 FSX 800
FSX 1600
ICX 7750
802.1s Multiple Spanning Tree 08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.10
802.1W Rapid Spanning Tree Protocol
(RSTP)
08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.10
802.1D Spanning Tree Support 08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.10
Enhanced IronSpan support includes
Fast Port Span, Fast Uplink Span, and
Single-instance Span
08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.10
FastIron Layer 2 devices (switches)
support up to 254 spanning tree
instances for VLANs
08.0.01
4
08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.10
Layer 3 devices (routers) support up to
254 spanning tree instances for VLANs
No 08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.10
PVST/PVST+ compatibility 08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.10
PVRST+ compatibility 08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.10
BPDU Guard 08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.01 08.0.10
4
Up to 32 spanning tree instances.
FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide 251
53-1003086-04
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