Administrator Guide

Enabling ICMP Unreachable Messages.......................................................................................................................373
UDP Helper.....................................................................................................................................................................373
Congure UDP Helper.............................................................................................................................................373
Important Points to Remember..............................................................................................................................374
Enabling UDP Helper..................................................................................................................................................... 374
Conguring a Broadcast Address.................................................................................................................................374
Congurations Using UDP Helper................................................................................................................................375
UDP Helper with Broadcast-All Addresses.................................................................................................................375
UDP Helper with Subnet Broadcast Addresses.........................................................................................................376
UDP Helper with Congured Broadcast Addresses.................................................................................................. 376
UDP Helper with No Congured Broadcast Addresses............................................................................................ 377
Troubleshooting UDP Helper........................................................................................................................................ 377
22 IPv6 Routing............................................................................................................................................ 378
Protocol Overview......................................................................................................................................................... 378
Extended Address Space........................................................................................................................................379
Stateless Autoconguration....................................................................................................................................379
IPv6 Headers............................................................................................................................................................379
IPv6 Header Fields...................................................................................................................................................380
Extension Header Fields..........................................................................................................................................382
Addressing................................................................................................................................................................ 383
Implementing IPv6 with Dell Networking OS............................................................................................................. 384
ICMPv6...........................................................................................................................................................................385
Path MTU Discovery.....................................................................................................................................................386
IPv6 Neighbor Discovery..............................................................................................................................................386
IPv6 Neighbor Discovery of MTU Packets...........................................................................................................387
Conguration Task List for IPv6 RDNSS.....................................................................................................................387
Conguring the IPv6 Recursive DNS Server........................................................................................................387
Debugging IPv6 RDNSS Information Sent to the Host .....................................................................................388
Displaying IPv6 RDNSS Information......................................................................................................................389
Secure Shell (SSH) Over an IPv6 Transport.............................................................................................................. 389
Conguration Tasks for IPv6........................................................................................................................................390
Adjusting Your CAM-Prole....................................................................................................................................390
Assigning an IPv6 Address to an Interface............................................................................................................391
Assigning a Static IPv6 Route.................................................................................................................................391
Conguring Telnet with IPv6..................................................................................................................................392
SNMP over IPv6......................................................................................................................................................392
Displaying IPv6 Information.................................................................................................................................... 392
Displaying an IPv6 Interface Information.............................................................................................................. 393
Showing IPv6 Routes..............................................................................................................................................393
Showing the Running-Conguration for an Interface.........................................................................................395
Clearing IPv6 Routes...............................................................................................................................................395
Disabling ND Entry Timeout................................................................................................................................... 395
Conguring IPv6 RA Guard.......................................................................................................................................... 396
Conguring IPv6 RA Guard on an Interface......................................................................................................... 397
Monitoring IPv6 RA Guard..................................................................................................................................... 398
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