Administrator Guide

Flush MAC Addresses after a Topology Change........................................................................................................575
MSTP Sample Congurations......................................................................................................................................575
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration....................................................................................... 576
Debugging and Verifying MSTP Congurations........................................................................................................ 579
33 Multicast Features....................................................................................................................................581
Enabling IP Multicast..................................................................................................................................................... 581
Implementation Information.......................................................................................................................................... 581
Multicast Policies...........................................................................................................................................................582
IPv4 Multicast Policies............................................................................................................................................ 582
Understanding Multicast Traceroute (mtrace).......................................................................................................... 589
Important Points to Remember............................................................................................................................. 590
Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 590
Supported Error Codes..................................................................................................................................................591
mtrace Scenarios...........................................................................................................................................................592
34 Object Tracking....................................................................................................................................... 598
Object Tracking Overview............................................................................................................................................ 598
Track Layer 2 Interfaces......................................................................................................................................... 599
Track Layer 3 Interfaces......................................................................................................................................... 599
Track IPv4 and IPv6 Routes...................................................................................................................................600
Set Tracking Delays..................................................................................................................................................601
VRRP Object Tracking.............................................................................................................................................601
Object Tracking Conguration...................................................................................................................................... 601
Tracking a Layer 2 Interface....................................................................................................................................601
Tracking a Layer 3 Interface................................................................................................................................... 602
Track an IPv4/IPv6 Route......................................................................................................................................604
Displaying Tracked Objects...........................................................................................................................................607
35 Open Shortest Path First (OSPFv2 and OSPFv3)................................................................................... 609
Protocol Overview.........................................................................................................................................................609
Autonomous System (AS) Areas........................................................................................................................... 609
Area Types.................................................................................................................................................................610
Networks and Neighbors......................................................................................................................................... 611
Router Types..............................................................................................................................................................611
Designated and Backup Designated Routers........................................................................................................613
Link-State Advertisements (LSAs).........................................................................................................................613
Router Priority and Cost..........................................................................................................................................614
OSPF with Dell Networking OS....................................................................................................................................615
Graceful Restart....................................................................................................................................................... 616
Fast Convergence (OSPFv2, IPv4 Only)...............................................................................................................617
Multi-Process OSPFv2 with VRF...........................................................................................................................617
OSPF ACK Packing.................................................................................................................................................. 617
Setting OSPF Adjacency with Cisco Routers....................................................................................................... 617
Conguration Information..............................................................................................................................................618
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