Administrator Guide

Understanding Multicast Traceroute (mtrace)..................................................................................................523
Printing Multicast Traceroute (mtrace) Paths.................................................................................................. 524
Supported Error Codes............................................................................................................................................525
mtrace Scenarios...................................................................................................................................................... 526
Chapter 33: Multicast Listener Discovery Protocol.................................................................... 532
MLD timers.......................................................................................................................................................................535
Reducing Host Response Burstiness....................................................................................................................535
Clearing MLD groups..................................................................................................................................................... 536
Debugging MLD...............................................................................................................................................................536
Explicit Tracking..............................................................................................................................................................536
Reducing Leave Latency............................................................................................................................................... 536
Displaying MLD groups table........................................................................................................................................536
Displaying MLD Interfaces............................................................................................................................................ 537
MLD Snooping................................................................................................................................................................. 537
Enable MLD Snooping.............................................................................................................................................. 537
Disable MLD Snooping............................................................................................................................................. 537
Configure the switch as a querier.........................................................................................................................538
Specify port as connected to multicast router..................................................................................................538
Enable Snooping Explicit Tracking........................................................................................................................ 538
Display the MLD Snooping Table.......................................................................................................................... 538
Chapter 34: Object Tracking......................................................................................................539
Object Tracking Overview............................................................................................................................................ 539
Track Layer 2 Interfaces......................................................................................................................................... 540
Track Layer 3 Interfaces......................................................................................................................................... 540
Track IPv4 and IPv6 Routes....................................................................................................................................541
Set Tracking Delays..................................................................................................................................................542
VRRP Object Tracking............................................................................................................................................. 542
Object Tracking Configuration.....................................................................................................................................542
Tracking a Layer 2 Interface.................................................................................................................................. 542
Tracking a Layer 3 Interface.................................................................................................................................. 543
Track an IPv4/IPv6 Route...................................................................................................................................... 544
Displaying Tracked Objects.......................................................................................................................................... 547
Chapter 35: Open Shortest Path First (OSPFv2 and OSPFv3)................................................... 550
Protocol Overview..........................................................................................................................................................550
Autonomous System (AS) Areas...........................................................................................................................550
Area Types...................................................................................................................................................................551
Networks and Neighbors.........................................................................................................................................552
Router Types..............................................................................................................................................................552
Designated and Backup Designated Routers..................................................................................................... 553
Link-State Advertisements (LSAs).......................................................................................................................553
Router Priority and Cost......................................................................................................................................... 554
OSPF with Dell EMC Networking OS........................................................................................................................ 555
Graceful Restart........................................................................................................................................................555
Fast Convergence (OSPFv2, IPv4 Only)............................................................................................................ 556
Multi-Process OSPFv2 with VRF..........................................................................................................................557
OSPF ACK Packing...................................................................................................................................................557
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