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ONFIGURING
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PANNING
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ROTOCOL
The purpose of the Spanning Tree Protocol (STP) is to maintain a loop-free
network. A loop-free path is accomplished when a device recognizes a
loop in the topology and blocks one or more redundant paths.
Overview
Mobility System Software (MSS) supports 802.1D and Per-VLAN Spanning
Tree protocol (PVST+).
MSS uses 802.1D bridge protocol data units (BPDUs) on VLAN ports
that are untagged. However, each VLAN still runs its own instance of
STP, even if two or more VLANs contain untagged ports. To run a
single instance of STP in 802.1D mode on the entire switch, configure
all network ports as untagged members of the same VLAN.
MSS uses PVST+ BPDUs on VLAN ports that are tagged. PVST+ BPDUs
include tag information in the 802.1Q field of the BPDUs. MSS runs a
separate instance of PVST+ on each tagged VLAN.
STP does not run on MAP access ports or wired authentication ports and
does not affect traffic flow on these port types.
When you create a VLAN, STP is disabled on the new VLAN by default,
regardless of the STP state of other VLANs on the device.
The IEEE 802.1D spanning tree specifications refer to networking devices
that forward Layer 2 traffic as bridges. In this context, a WX switch is a
bridge. Where this manual or the product interface uses the term bridge,
you can assume the term is applicable to the WX switch.
Summary of Contents for 3CRWX120695A
Page 138: ...138 CHAPTER 6 CONFIGURING AND MANAGING IP INTERFACES AND SERVICES ...
Page 272: ...272 CHAPTER 11 CONFIGURING RF LOAD BALANCING FOR MAPS ...
Page 310: ...310 CHAPTER 13 CONFIGURING USER ENCRYPTION ...
Page 322: ...322 CHAPTER 14 CONFIGURING RF AUTO TUNING ...
Page 350: ...350 CHAPTER 16 CONFIGURING QUALITY OF SERVICE ...
Page 368: ...368 CHAPTER 17 CONFIGURING AND MANAGING SPANNING TREE PROTOCOL ...
Page 412: ...412 CHAPTER 19 CONFIGURING AND MANAGING SECURITY ACLS ...
Page 518: ...518 CHAPTER 21 CONFIGURING AAA FOR NETWORK USERS ...
Page 530: ...530 CHAPTER 22 CONFIGURING COMMUNICATION WITH RADIUS ...
Page 542: ...542 CHAPTER 23 MANAGING 802 1X ON THE WX SWITCH ...
Page 598: ...598 CHAPTER 26 ROGUE DETECTION AND COUNTERMEASURES ...
Page 706: ...706 GLOSSARY ...