Extreme Networks ExtremeWare XOS 11.1, Руководство пользователя

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Contents
ExtremeWare XOS 11.1 Concepts Guide
10
Part 2: Using Switching and Routing Protocols
Chapter 15: Ethernet Automatic Protection Switching.................................................................... 267
Licensing ...............................................................................................................................267
Overview of the EAPS Protocol .................................................................................................267
Fast Convergence ..............................................................................................................269
Fault Detection and Recovery ...................................................................................................269
Link Down Message Sent by a Transit Node .........................................................................270
Ring Port Down Event Sent by Hardware Layer .....................................................................270
Polling .............................................................................................................................271
Restoration Operations.......................................................................................................271
Multiple EAPS Domains...........................................................................................................272
EAPS Data VLAN Spanning Two Rings Connected by One Switch...........................................272
Multiple EAPS Domains per Ring—Spatial Reuse.................................................................273
Multiple EAPS Rings Sharing a Common Link ......................................................................273
Configuring EAPS on a Switch ..................................................................................................274
Creating and Deleting an EAPS Domain...............................................................................275
Defining the EAPS Mode of the Switch................................................................................275
Configuring EAPS Polling Timers ........................................................................................276
Configuring the Primary and Secondary Ports .......................................................................277
Configuring the EAPS Control VLAN ....................................................................................277
Configuring the EAPS Protected VLANs ...............................................................................278
Enabling and Disabling Fast Convergence ............................................................................278
Enabling and Disabling an EAPS Domain.............................................................................278
Enabling and Disabling EAPS on the Switch ........................................................................278
Unconfiguring an EAPS Ring Port .......................................................................................279
Displaying EAPS Status Information....................................................................................279
Configuring EAPS Shared Ports ................................................................................................282
Steady State .....................................................................................................................283
Common Link Failures .......................................................................................................284
Flushing the FDBs.............................................................................................................284
Creating and Deleting a Shared Port....................................................................................285
Defining the Mode of the Shared Port..................................................................................285
Configuring the Link ID of the Shared Port...........................................................................285
Configuring the Shared Port Segment Timer.........................................................................285
Unconfiguring an EAPS Shared Port....................................................................................286
Displaying EAPS Shared-Port Status Information..................................................................286
EAPS Shared Port Configuration Rules ......................................................................................289
EAPS Shared Port Configuration Examples ................................................................................289
Basic Configuration ...........................................................................................................289
Basic Core Configuration....................................................................................................290
Right Angle Configuration ..................................................................................................290
Combined Basic Core and Right Angle Configuration ............................................................291
Large Core and Access Rings Configuration..........................................................................292
Advanced Configuration .....................................................................................................293
Chapter 16: Spanning Tree Protocol............................................................................................. 295
Overview of the Spanning Tree Protocol.....................................................................................295
Spanning Tree Domains ...........................................................................................................295
Member VLANs .................................................................................................................296
STPD Modes.....................................................................................................................297