Administrator Guide

ARP Learning via Gratuitous ARP............................................................................................................................... 440
Enabling ARP Learning via Gratuitous ARP................................................................................................................440
ARP Learning via ARP Request................................................................................................................................... 440
Conguring ARP Retries................................................................................................................................................441
ICMP............................................................................................................................................................................... 442
Conguration Tasks for ICMP...................................................................................................................................... 442
Enabling ICMP Unreachable Messages...................................................................................................................... 442
UDP Helper.....................................................................................................................................................................442
Congure UDP Helper.............................................................................................................................................442
Important Points to Remember..............................................................................................................................443
Enabling UDP Helper.....................................................................................................................................................443
Conguring a Broadcast Address................................................................................................................................ 443
Congurations Using UDP Helper............................................................................................................................... 444
UDP Helper with Broadcast-All Addresses.................................................................................................................444
UDP Helper with Subnet Broadcast Addresses.........................................................................................................445
UDP Helper with Congured Broadcast Addresses..................................................................................................445
UDP Helper with No Congured Broadcast Addresses............................................................................................446
Troubleshooting UDP Helper........................................................................................................................................446
25 IPv6 Routing............................................................................................................................................447
Protocol Overview......................................................................................................................................................... 447
Extended Address Space........................................................................................................................................448
Stateless Autoconguration................................................................................................................................... 448
IPv6 Headers............................................................................................................................................................448
IPv6 Header Fields...................................................................................................................................................449
Extension Header Fields.......................................................................................................................................... 451
Addressing................................................................................................................................................................ 452
Implementing IPv6 with Dell Networking OS.............................................................................................................453
ICMPv6...........................................................................................................................................................................454
Path MTU Discovery.....................................................................................................................................................455
IPv6 Neighbor Discovery..............................................................................................................................................455
IPv6 Neighbor Discovery of MTU Packets.......................................................................................................... 456
Conguration Task List for IPv6 RDNSS.................................................................................................................... 456
Conguring the IPv6 Recursive DNS Server....................................................................................................... 456
Debugging IPv6 RDNSS Information Sent to the Host ..................................................................................... 457
Displaying IPv6 RDNSS Information......................................................................................................................458
Secure Shell (SSH) Over an IPv6 Transport.............................................................................................................. 458
Conguration Tasks for IPv6........................................................................................................................................459
Adjusting Your CAM-Prole....................................................................................................................................459
Assigning an IPv6 Address to an Interface...........................................................................................................460
Assigning a Static IPv6 Route................................................................................................................................460
Conguring Telnet with IPv6...................................................................................................................................461
SNMP over IPv6.......................................................................................................................................................461
Displaying IPv6 Information.....................................................................................................................................461
Displaying an IPv6 Interface Information.............................................................................................................. 462
Showing IPv6 Routes..............................................................................................................................................462
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