Extreme Networks ExtremeWare XOS Guide Manual page 11

Encapsulation Modes.........................................................................................................297
STP States .......................................................................................................................298
Binding Ports....................................................................................................................299
Rapid Root Failover ...........................................................................................................301
STP and Hitless Failover-BlackDiamond 10K Switch Only...................................................301
STP Configurations..................................................................................................................302
Basic STP Configuration ....................................................................................................302
Multiple STPDs on a Port ...................................................................................................305
VLAN Spanning Multiple STPDs .........................................................................................305
EMISTP Deployment Constraints ........................................................................................306
Per VLAN Spanning Tree..........................................................................................................308
STPD VLAN Mapping.........................................................................................................308
Native VLAN .....................................................................................................................308
Rapid Spanning Tree Protocol ..................................................................................................308
RSTP Concepts .................................................................................................................309
RSTP Operation ................................................................................................................311
STP Rules and Restrictions ......................................................................................................318
Configuring STP on the Switch .................................................................................................319
STP Configuration Examples ....................................................................................................320
Basic 802.1D Configuration Example..................................................................................320
EMISTP Configuration Example ..........................................................................................321
RSTP 802.1w Configuration Example..................................................................................322
Displaying STP Settings...........................................................................................................323
Chapter 17: Extreme Standby Router Protocol ............................................................................... 325
Overview of ESRP ...................................................................................................................325
ESRP Modes of Operation ..................................................................................................325
ESRP and ELRP................................................................................................................326
Reasons to Use ESRP ........................................................................................................326
ESRP Concepts.......................................................................................................................326
ESRP-Aware Switches .......................................................................................................328
Standard and Extended ESRP ............................................................................................329
ESRP Domains .................................................................................................................330
Linking ESRP Switches......................................................................................................331
ESRP and Hitless Failover-BlackDiamond 10K Switch Only ................................................331
Determining the ESRP Master ..................................................................................................332
Master Switch Behavior .....................................................................................................332
Pre-Master Switch Behavior................................................................................................333
Slave Switch Behavior .......................................................................................................333
Neutral Switch Behavior ....................................................................................................333
Electing the Master Switch.................................................................................................333
ESRP Failover Time...........................................................................................................334
ESRP Election Algorithms ..................................................................................................334
Configuring an ESRP Domain on a Switch .................................................................................336
Creating and Deleting an ESRP Domain...............................................................................336
Configuring the ESRP Domain ID........................................................................................337
Adding VLANs to an ESRP Domain .....................................................................................337
Enabling and Disabling an ESRP Domain ............................................................................338
ExtremeWare XOS 11.1 Concepts Guide
Contents
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