Specifications

ExtremeWare XOS 11.0 Concepts Guide 9
Contents
Part 2 Using Switching and Routing Protocols
Chapter 11 Ethernet Automatic Protection Switching
Overview of the EAPS Protocol 175
Fast Convergence 177
EAPS Terms 177
Fault Detection and Recovery 178
Link Down Message Sent by a Transit Node 178
Ring Port Down Event Sent by Hardware Layer 179
Polling 179
Restoration Operations 179
Multiple EAPS Domains 180
EAPS Data VLAN Spanning Two Rings Connected by One Switch 180
Multiple EAPS Domains per Ring—Spatial Reuse 181
Multiple EAPS Rings Sharing a Common Link 181
Configuring EAPS on a Switch 182
Creating and Deleting an EAPS Domain 183
Defining the EAPS Mode of the Switch 183
Configuring EAPS Polling Timers 184
Configuring the Primary and Secondary Ports 185
Configuring the EAPS Control VLAN 185
Configuring the EAPS Protected VLANs 186
Enabling and Disabling Fast Convergence 186
Enabling and Disabling an EAPS Domain 186
Enabling and Disabling EAPS on the Switch 187
Unconfiguring an EAPS Ring Port 187
Displaying EAPS Status Information 187
Configuring EAPS with STP 190
EAPS with STP Guidelines 191
Configuring EAPS with STP in EMISTP Encapsulation Mode 192
Configuring EAPS with STP in 802.1D Encapsulation Mode 193
Chapter 12 Spanning Tree Protocol
Overview of the Spanning Tree Protocol 195
Spanning Tree Domains 197
Member VLANs 197
STPD Modes 198
Encapsulation Modes 199
STP States 200
Binding Ports 200
Rapid Root Failover 202
STP and Hitless Failover 202