Concept Guide

Supported Error Codes.................................................................................................................................................608
mtrace Scenarios...........................................................................................................................................................609
32 Multicast Listener Discovery Protocol...................................................................................................... 615
MLD Version 1.................................................................................................................................................................615
MLD Querier Router.......................................................................................................................................................615
Joining a Multicast Group..............................................................................................................................................616
Leaving a Multicast Group.............................................................................................................................................616
MLD version 2.................................................................................................................................................................616
MLD timers......................................................................................................................................................................618
Reducing Host Response Burstiness.....................................................................................................................619
Clearing MLD groups..................................................................................................................................................... 619
Debugging MLD..............................................................................................................................................................619
Explicit Tracking..............................................................................................................................................................619
Reducing Leave Latency................................................................................................................................................619
Displaying MLD groups table........................................................................................................................................620
Displaying MLD Interfaces............................................................................................................................................620
MLD Snooping............................................................................................................................................................... 620
Enable MLD Snooping.............................................................................................................................................620
Disable MLD Snooping.............................................................................................................................................621
Congure the switch as a querier...........................................................................................................................621
Specify port as connected to multicast router..................................................................................................... 621
Enable Snooping Explicit Tracking......................................................................................................................... 622
Display the MLD Snooping Table........................................................................................................................... 622
33 Object Tracking........................................................................................................................................623
Object Tracking Overview............................................................................................................................................ 623
Track Layer 2 Interfaces..........................................................................................................................................624
Track Layer 3 Interfaces..........................................................................................................................................624
Track IPv4 and IPv6 Routes................................................................................................................................... 625
Set Tracking Delays................................................................................................................................................. 626
VRRP Object Tracking............................................................................................................................................ 626
Object Tracking Conguration..................................................................................................................................... 626
Tracking a Layer 2 Interface................................................................................................................................... 626
Tracking a Layer 3 Interface....................................................................................................................................627
Track an IPv4/IPv6 Route...................................................................................................................................... 629
Displaying Tracked Objects...........................................................................................................................................633
34 Open Shortest Path First (OSPFv2 and OSPFv3)....................................................................................635
Protocol Overview.........................................................................................................................................................635
Autonomous System (AS) Areas........................................................................................................................... 635
Area Types................................................................................................................................................................ 636
Networks and Neighbors........................................................................................................................................ 637
Router Types.............................................................................................................................................................637
Designated and Backup Designated Routers....................................................................................................... 639
Link-State Advertisements (LSAs)........................................................................................................................639
Contents
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