Users Guide

Router 1 Running-ConfigurationRouter 2 Running-ConfigurationRouter 3 Running-

ConfigurationExample Running-Configuration........................................................................668

Debugging and Verifying MSTP Configurations...............................................................................671

33 Multicast Features..........................................................................................674

Enabling IP Multicast.........................................................................................................................674

Implementation Information............................................................................................................674

First Packet Forwarding for Lossless Multicast................................................................................ 675

Multicast Policies...............................................................................................................................675

IPv4 Multicast Policies.................................................................................................................675

34 Object Tracking..............................................................................................683

Object Tracking Overview................................................................................................................683

Track Layer 2 Interfaces............................................................................................................. 684

Track Layer 3 Interfaces............................................................................................................. 684

Track IPv4 and IPv6 Routes........................................................................................................685

Track a Metric Threshold............................................................................................................685

Tracking a Metric Threshold.......................................................................................................686

Track Route Reachability............................................................................................................ 687

Tracking Route Reachability.......................................................................................................687

Set Tracking Delays.................................................................................................................... 689

VRRP Object Tracking................................................................................................................ 689

Object Tracking Configuration........................................................................................................ 689

Tracking a Layer 2 Interface.......................................................................................................689

Tracking a Layer 3 Interface.......................................................................................................690

Displaying Tracked Objects..............................................................................................................692

35 Open Shortest Path First (OSPFv2 and OSPFv3)...................................... 694

Protocol Overview............................................................................................................................694

Autonomous System (AS) Areas.................................................................................................694

Area Types...................................................................................................................................695

Networks and Neighbors............................................................................................................696

Router Types...............................................................................................................................696

Designated and Backup Designated Routers............................................................................ 698

Link-State Advertisements (LSAs)...............................................................................................698

Virtual Links................................................................................................................................. 700

Router Priority and Cost............................................................................................................. 700

OSPF Implementation.......................................................................................................................701

Fast Convergence (OSPFv2, IPv4 Only)......................................................................................701

Multi-Process OSPFv2 (IPv4 only).............................................................................................. 701

RFC-2328 Compliant OSPF Flooding........................................................................................ 702

OSPF ACK Packing...................................................................................................................... 703