Users Guide
Router 1 Running-ConfigurationRouter 2 Running-ConfigurationRouter 3 Running-
ConfigurationExample Running-Configuration........................................................................................ 596
Debugging and Verifying MSTP Configurations..............................................................................................599
33 Multicast Features.............................................................................................................................................601
Enabling IP Multicast............................................................................................................................................. 601
Implementation Information............................................................................................................................... 601
First Packet Forwarding for Lossless Multicast................................................................................................602
Multicast Policies....................................................................................................................................................602
IPv4 Multicast Policies.....................................................................................................................................602
34 Object Tracking.................................................................................................................................................610
Object Tracking Overview....................................................................................................................................610
Track Layer 2 Interfaces...................................................................................................................................611
Track Layer 3 Interfaces...................................................................................................................................611
Track IPv4 and IPv6 Routes............................................................................................................................612
Track a Metric Threshold................................................................................................................................ 612
Tracking a Metric Threshold...........................................................................................................................612
Track Route Reachability................................................................................................................................ 614
Tracking Route Reachability...........................................................................................................................614
Set Tracking Delays.......................................................................................................................................... 615
VRRP Object Tracking......................................................................................................................................615
Object Tracking Configuration............................................................................................................................616
Tracking a Layer 2 Interface...........................................................................................................................616
Tracking a Layer 3 Interface........................................................................................................................... 617
Displaying Tracked Objects..................................................................................................................................618
35 Open Shortest Path First (OSPFv2 and OSPFv3)......................................................................................... 620
Protocol Overview.................................................................................................................................................620
Autonomous System (AS) Areas....................................................................................................................620
Area Types..........................................................................................................................................................621
Networks and Neighbors................................................................................................................................622
Router Types..................................................................................................................................................... 622
Designated and Backup Designated Routers.............................................................................................624
Link-State Advertisements (LSAs)................................................................................................................. 624
Router Priority and Cost................................................................................................................................. 625
OSPF Implementation...........................................................................................................................................626
Fast Convergence (OSPFv2, IPv4 Only).......................................................................................................627
Multi-Process OSPFv2 (IPv4 only).................................................................................................................627
RFC-2328 Compliant OSPF Flooding.......................................................................................................... 627
OSPF ACK Packing...........................................................................................................................................628
Setting OSPF Adjacency with Cisco Routers..............................................................................................628
Configuration Information...................................................................................................................................629
Configuration Task List for OSPFv2 (OSPF for IPv4).................................................................................629
Sample Configurations for OSPFv2....................................................................................................................641
Basic OSPFv2 Router Topology.....................................................................................................................641
OSPF Area 0 — Te 1/1 and 1/2....................................................................................................................... 641
Version 9.10(0.1)
20