Administrator Guide

Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 640
Supported Error Codes..................................................................................................................................................641
mtrace Scenarios........................................................................................................................................................... 642
34 Object Tracking........................................................................................................................................648
Object Tracking Overview............................................................................................................................................ 648
Track Layer 2 Interfaces..........................................................................................................................................649
Track Layer 3 Interfaces..........................................................................................................................................649
Track IPv4 and IPv6 Routes...................................................................................................................................650
Track a Metric Threshold........................................................................................................................................650
Tracking a Metric Threshold...................................................................................................................................650
Track Route Reachability........................................................................................................................................ 652
Tracking Route Reachability................................................................................................................................... 652
Set Tracking Delays................................................................................................................................................. 653
VRRP Object Tracking............................................................................................................................................ 653
Object Tracking Conguration..................................................................................................................................... 654
Tracking a Layer 2 Interface................................................................................................................................... 654
Tracking a Layer 3 Interface...................................................................................................................................655
Displaying Tracked Objects...........................................................................................................................................656
35 Open Shortest Path First (OSPFv2 and OSPFv3)................................................................................... 658
Protocol Overview.........................................................................................................................................................658
Autonomous System (AS) Areas........................................................................................................................... 658
Area Types................................................................................................................................................................ 659
Networks and Neighbors........................................................................................................................................660
Router Types............................................................................................................................................................ 660
Designated and Backup Designated Routers....................................................................................................... 662
Link-State Advertisements (LSAs)........................................................................................................................662
Virtual Links.............................................................................................................................................................. 663
Router Priority and Cost.........................................................................................................................................663
OSPF Implementation................................................................................................................................................... 664
Fast Convergence (OSPFv2, IPv4 Only)..............................................................................................................665
Multi-Process OSPFv2 (IPv4 only)....................................................................................................................... 665
RFC-2328 Compliant OSPF Flooding................................................................................................................... 665
OSPF ACK Packing................................................................................................................................................. 666
Setting OSPF Adjacency with Cisco Routers...................................................................................................... 666
Conguration Information............................................................................................................................................. 667
Conguration Task List for OSPFv2 (OSPF for IPv4).........................................................................................667
Sample Congurations for OSPFv2.............................................................................................................................679
Basic OSPFv2 Router Topology............................................................................................................................. 679
OSPF Area 0 — Te 1/1 and 1/2............................................................................................................................. 680
OSPF Area 0 — Te 3/1 and 3/2............................................................................................................................680
OSPF Area 0 — Te 2/1 and 2/2.............................................................................................................................681
Conguration Task List for OSPFv3 (OSPF for IPv6)............................................................................................... 681
Enabling IPv6 Unicast Routing...............................................................................................................................682
Assigning IPv6 Addresses on an Interface............................................................................................................682
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