33 Multicast Features.............................................................................................................. 719
Enabling IP Multicast..............................................................................................................719
Multicast Policies....................................................................................................................720
IPv4 Multicast Policies..................................................................................................... 720
34 Object Tracking..................................................................................................................729
Object Tracking Overview....................................................................................................729
Track Layer 2 Interfaces..................................................................................................730
Track Layer 3 Interfaces...................................................................................................731
Track a Metric Threshold.................................................................................................731
Track Route Reachability................................................................................................ 733
Set Tracking Delays.......................................................................................................... 735
VRRP Object Tracking..................................................................................................... 735
Protocol Overview..................................................................................................................741
Area Types..........................................................................................................................743
Networks and Neighbors................................................................................................ 743
Router Types..................................................................................................................... 743
Virtual Links........................................................................................................................ 747
Router Priority and Cost..................................................................................................747
OSPF Implementation........................................................................................................... 748
Version 9.10(0.0)
22