Reference Guide

Table Of Contents
Creating Multiple Spanning Tree Instances.........................................................................................................545
Influencing MSTP Root Selection.........................................................................................................................547
Interoperate with Non-FTOS Bridges...................................................................................................................547
Changing the Region Name or Revision............................................................................................................... 548
Modifying Global Parameters...............................................................................................................................548
Modifying the Interface Parameters.................................................................................................................... 549
Configuring an EdgePort.......................................................................................................................................550
Flush MAC Addresses after a Topology Change..................................................................................................551
MSTP Sample Configurations...............................................................................................................................551
Router 1 Running-ConfigurationRouter 2 Running-ConfigurationRouter 3 Running-ConfigurationSFTOS
Example Running-Configuration.....................................................................................................................552
Debugging and Verifying MSTP Configurations...................................................................................................554
32 Multicast Features................................................................................................................ 557
Enabling IP Multicast............................................................................................................................................557
Multicast with ECMP............................................................................................................................................ 557
Implementation Information................................................................................................................................. 558
First Packet Forwarding for Lossless Multicast................................................................................................... 559
Multicast Policies................................................................................................................................................. 559
IPv4 Multicast Policies...................................................................................................................................559
33 Open Shortest Path First (OSPFv2 and OSPFv3).............................................................. 567
Protocol Overview................................................................................................................................................ 567
Autonomous System (AS) Areas....................................................................................................................567
Area Types..................................................................................................................................................... 568
Networks and Neighbors............................................................................................................................... 569
Router Types.................................................................................................................................................. 569
Designated and Backup Designated Routers................................................................................................ 571
Link-State Advertisements (LSAs)..................................................................................................................571
Virtual Links....................................................................................................................................................572
Router Priority and Cost................................................................................................................................. 572
OSPF with FTOS.................................................................................................................................................... 573
Graceful Restart............................................................................................................................................. 574
Fast Convergence (OSPFv2, IPv4 Only).......................................................................................................... 575
Multi-Process OSPFv2 (IPv4 only)..................................................................................................................575
RFC-2328 Compliant OSPF Flooding............................................................................................................... 575
OSPF ACK Packing......................................................................................................................................... 576
Setting OSPF Adjacency with Cisco Routers.................................................................................................577
Configuration Information.....................................................................................................................................577
Configuration Task List for OSPFv2 (OSPF for IPv4).......................................................................................578
Configuration Task List for OSPFv3 (OSPF for IPv6)............................................................................................. 593
Enabling IPv6 Unicast Routing....................................................................................................................... 593