Concept Guide

Enabling ICMP Unreachable Messages...................................................................................................................... 455
UDP Helper.....................................................................................................................................................................456
Congure UDP Helper............................................................................................................................................ 456
Important Points to Remember............................................................................................................................. 456
Enabling UDP Helper.....................................................................................................................................................456
Conguring a Broadcast Address................................................................................................................................ 457
Congurations Using UDP Helper................................................................................................................................457
UDP Helper with Broadcast-All Addresses.................................................................................................................457
UDP Helper with Subnet Broadcast Addresses.........................................................................................................458
UDP Helper with Congured Broadcast Addresses..................................................................................................458
UDP Helper with No Congured Broadcast Addresses............................................................................................459
Troubleshooting UDP Helper........................................................................................................................................459
22 IPv6 Routing............................................................................................................................................460
Protocol Overview.........................................................................................................................................................460
Extended Address Space.........................................................................................................................................461
Stateless Autoconguration.................................................................................................................................... 461
IPv6 Headers.............................................................................................................................................................461
Longest Prex Match (LPM) Table and IPv6 /65 – /128 support................................................................... 462
IPv6 Header Fields...................................................................................................................................................463
Extension Header Fields......................................................................................................................................... 465
Addressing................................................................................................................................................................ 466
Implementing IPv6 with Dell EMC Networking OS................................................................................................... 467
ICMPv6...........................................................................................................................................................................468
Path MTU discovery..................................................................................................................................................... 469
IPv6 Neighbor Discovery..............................................................................................................................................469
IPv6 Neighbor Discovery of MTU Packets...........................................................................................................470
Conguring the IPv6 Recursive DNS Server....................................................................................................... 470
Debugging IPv6 RDNSS Information Sent to the Host ......................................................................................471
Displaying IPv6 RDNSS Information.......................................................................................................................471
Secure Shell (SSH) Over an IPv6 Transport.............................................................................................................. 472
Conguration Tasks for IPv6........................................................................................................................................ 472
Adjusting Your CAM-Prole.................................................................................................................................... 472
Assigning an IPv6 Address to an Interface........................................................................................................... 473
Assigning a Static IPv6 Route................................................................................................................................ 474
Conguring Telnet with IPv6.................................................................................................................................. 474
SNMP over IPv6......................................................................................................................................................475
Displaying IPv6 Information.................................................................................................................................... 475
Displaying an IPv6 Interface Information.............................................................................................................. 475
Showing IPv6 Routes.............................................................................................................................................. 476
Showing the Running-Conguration for an Interface......................................................................................... 477
Clearing IPv6 Routes............................................................................................................................................... 478
Disabling ND Entry Timeout................................................................................................................................... 478
Conguring IPv6 RA Guard.......................................................................................................................................... 478
Conguring IPv6 RA Guard on an Interface.........................................................................................................480
Monitoring IPv6 RA Guard...................................................................................................................................... 481
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