Administrator Guide

Configuration Tasks for ARP............................................................................................................ 369
Configuring Static ARP Entries......................................................................................................... 369
Enabling Proxy ARP...........................................................................................................................369
Clearing ARP Cache..........................................................................................................................370
ARP Learning via Gratuitous ARP..................................................................................................... 370
Enabling ARP Learning via Gratuitous ARP.......................................................................................371
ARP Learning via ARP Request..........................................................................................................371
Configuring ARP Retries....................................................................................................................372
ICMP.................................................................................................................................................. 373
Configuration Tasks for ICMP...........................................................................................................373
Enabling ICMP Unreachable Messages............................................................................................373
UDP Helper........................................................................................................................................373
Configure UDP Helper................................................................................................................ 373
Important Points to Remember..................................................................................................374
Enabling UDP Helper........................................................................................................................ 374
Configuring a Broadcast Address.....................................................................................................374
Configurations Using UDP Helper....................................................................................................375
UDP Helper with Broadcast-All Addresses...................................................................................... 375
UDP Helper with Subnet Broadcast Addresses................................................................................376
UDP Helper with Configured Broadcast Addresses.........................................................................377
UDP Helper with No Configured Broadcast Addresses...................................................................377
Troubleshooting UDP Helper........................................................................................................... 377
21 IPv6 Routing.................................................................................................... 379
Protocol Overview............................................................................................................................ 379
Extended Address Space.............................................................................................................379
Stateless Autoconfiguration........................................................................................................379
IPv6 Headers............................................................................................................................... 380
IPv6 Header Fields.......................................................................................................................381
Extension Header Fields..............................................................................................................382
Addressing...................................................................................................................................383
Implementing IPv6 with Dell Networking OS..................................................................................385
ICMPv6.............................................................................................................................................. 387
Path MTU Discovery..........................................................................................................................387
IPv6 Neighbor Discovery..................................................................................................................388
IPv6 Neighbor Discovery of MTU Packets.................................................................................389
Configuration Task List for IPv6 RDNSS.......................................................................................... 389
Configuring the IPv6 Recursive DNS Server.............................................................................. 389
Debugging IPv6 RDNSS Information Sent to the Host ............................................................ 390
Displaying IPv6 RDNSS Information........................................................................................... 391
Secure Shell (SSH) Over an IPv6 Transport......................................................................................392
Configuration Tasks for IPv6............................................................................................................ 392