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Table Of Contents
Understanding Multicast Traceroute (mtrace).................................................................................................. 521
Printing Multicast Traceroute (mtrace) Paths...................................................................................................521
Supported Error Codes............................................................................................................................................523
mtrace Scenarios...................................................................................................................................................... 524
Chapter 33: Multicast Listener Discovery Protocol.................................................................... 530
MLD timers.......................................................................................................................................................................533
Reducing Host Response Burstiness....................................................................................................................533
Clearing MLD groups..................................................................................................................................................... 534
Debugging MLD...............................................................................................................................................................534
Explicit Tracking.............................................................................................................................................................. 534
Reducing Leave Latency............................................................................................................................................... 534
Displaying MLD groups table........................................................................................................................................534
Displaying MLD Interfaces............................................................................................................................................535
MLD Snooping................................................................................................................................................................. 535
Enable MLD Snooping..............................................................................................................................................535
Disable MLD Snooping.............................................................................................................................................535
Configure the switch as a querier.........................................................................................................................536
Specify port as connected to multicast router..................................................................................................536
Enable Snooping Explicit Tracking........................................................................................................................ 536
Display the MLD Snooping Table.......................................................................................................................... 536
Chapter 34: Object Tracking......................................................................................................537
Object Tracking Overview............................................................................................................................................ 537
Track Layer 2 Interfaces......................................................................................................................................... 538
Track Layer 3 Interfaces......................................................................................................................................... 538
Track IPv4 and IPv6 Routes...................................................................................................................................538
Set Tracking Delays..................................................................................................................................................539
VRRP Object Tracking.............................................................................................................................................540
Object Tracking Configuration.................................................................................................................................... 540
Tracking a Layer 2 Interface.................................................................................................................................. 540
Tracking a Layer 3 Interface................................................................................................................................... 541
Track an IPv4/IPv6 Route...................................................................................................................................... 542
Displaying Tracked Objects.......................................................................................................................................... 545
Chapter 35: Open Shortest Path First (OSPFv2 and OSPFv3)................................................... 547
Protocol Overview.......................................................................................................................................................... 547
Autonomous System (AS) Areas...........................................................................................................................547
Area Types..................................................................................................................................................................548
Networks and Neighbors.........................................................................................................................................549
Router Types..............................................................................................................................................................549
Designated and Backup Designated Routers..................................................................................................... 550
Link-State Advertisements (LSAs).......................................................................................................................550
Router Priority and Cost..........................................................................................................................................551
OSPF with Dell EMC Networking OS........................................................................................................................ 552
Graceful Restart........................................................................................................................................................552
Fast Convergence (OSPFv2, IPv4 Only)............................................................................................................ 553
Multi-Process OSPFv2 with VRF..........................................................................................................................554
OSPF ACK Packing...................................................................................................................................................554
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