Concept Guide

Conguration Tasks for ARP........................................................................................................................................ 455
Conguring Static ARP Entries....................................................................................................................................455
Enabling Proxy ARP.......................................................................................................................................................456
Clearing ARP Cache......................................................................................................................................................456
ARP Learning via Gratuitous ARP............................................................................................................................... 456
Enabling ARP Learning via Gratuitous ARP................................................................................................................456
ARP Learning via ARP Request................................................................................................................................... 457
Conguring ARP Retries............................................................................................................................................... 457
ICMP............................................................................................................................................................................... 458
Conguration Tasks for ICMP......................................................................................................................................458
Enabling ICMP Unreachable Messages...................................................................................................................... 458
UDP Helper.....................................................................................................................................................................459
Congure UDP Helper............................................................................................................................................ 459
Important Points to Remember............................................................................................................................. 459
Enabling UDP Helper.....................................................................................................................................................459
Congurations Using UDP Helper............................................................................................................................... 459
UDP Helper with Broadcast-All Addresses.................................................................................................................459
UDP Helper with Subnet Broadcast Addresses.........................................................................................................460
UDP Helper with Congured Broadcast Addresses...................................................................................................461
UDP Helper with No Congured Broadcast Addresses.............................................................................................461
Troubleshooting UDP Helper.........................................................................................................................................461
22 IPv6 Routing............................................................................................................................................463
Protocol Overview.........................................................................................................................................................463
Extended Address Space........................................................................................................................................464
Stateless Autoconguration................................................................................................................................... 464
IPv6 Headers............................................................................................................................................................464
Longest Prex Match (LPM) Table and IPv6 /65 – /128 support................................................................... 465
IPv6 Header Fields...................................................................................................................................................466
Extension Header Fields..........................................................................................................................................468
Addressing................................................................................................................................................................ 469
Implementing IPv6 with Dell EMC Networking OS................................................................................................... 470
ICMPv6........................................................................................................................................................................... 470
Path MTU discovery......................................................................................................................................................470
IPv6 Neighbor Discovery...............................................................................................................................................471
IPv6 Neighbor Discovery of MTU Packets...........................................................................................................472
Conguring the IPv6 Recursive DNS Server........................................................................................................472
Debugging IPv6 RDNSS Information Sent to the Host ..................................................................................... 473
Displaying IPv6 RDNSS Information......................................................................................................................473
Secure Shell (SSH) Over an IPv6 Transport...............................................................................................................474
Conguration Tasks for IPv6.........................................................................................................................................474
Adjusting Your CAM-Prole.................................................................................................................................... 474
Assigning an IPv6 Address to an Interface........................................................................................................... 475
Assigning a Static IPv6 Route................................................................................................................................ 476
Conguring Telnet with IPv6.................................................................................................................................. 476
SNMP over IPv6...................................................................................................................................................... 477
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