Users Guide

Implementation Information....................................................................................................................................419
Configuration Tasks for IP Addresses......................................................................................................................... 419
Assigning IP Addresses to an Interface.......................................................................................................................419
Configuring Static Routes............................................................................................................................................ 420
Configure Static Routes for the Management Interface.......................................................................................... 421
IPv4 Path MTU Discovery Overview.......................................................................................................................... 422
Using the Configured Source IP Address in ICMP Messages................................................................................. 422
Configuring the ICMP Source Interface...............................................................................................................422
Configuring the Duration to Establish a TCP Connection........................................................................................423
Enabling Directed Broadcast........................................................................................................................................423
Resolution of Host Names............................................................................................................................................423
Enabling Dynamic Resolution of Host Names............................................................................................................424
Specifying the Local System Domain and a List of Domains................................................................................... 424
Configuring DNS with Traceroute...............................................................................................................................425
ARP................................................................................................................................................................................. 425
Configuration Tasks for ARP....................................................................................................................................... 426
Configuring Static ARP Entries....................................................................................................................................426
Enabling Proxy ARP.......................................................................................................................................................426
Clearing ARP Cache...................................................................................................................................................... 427
ARP Learning via Gratuitous ARP............................................................................................................................... 427
Enabling ARP Learning via Gratuitous ARP................................................................................................................427
ARP Learning via ARP Request................................................................................................................................... 427
Configuring ARP Retries...............................................................................................................................................428
ICMP............................................................................................................................................................................... 429
Configuration Tasks for ICMP..................................................................................................................................... 429
Enabling ICMP Unreachable Messages...................................................................................................................... 429
UDP Helper.....................................................................................................................................................................429
Configure UDP Helper............................................................................................................................................ 429
Important Points to Remember.............................................................................................................................430
Enabling UDP Helper.....................................................................................................................................................430
Configuring a Broadcast Address................................................................................................................................430
Configurations Using UDP Helper................................................................................................................................431
UDP Helper with Broadcast-All Addresses................................................................................................................. 431
UDP Helper with Subnet Broadcast Addresses........................................................................................................ 432
UDP Helper with Configured Broadcast Addresses..................................................................................................432
UDP Helper with No Configured Broadcast Addresses........................................................................................... 433
Troubleshooting UDP Helper....................................................................................................................................... 433
24 IPv6 Routing............................................................................................................................................434
Protocol Overview.........................................................................................................................................................434
Extended Address Space....................................................................................................................................... 435
Stateless Autoconfiguration...................................................................................................................................435
IPv6 Headers............................................................................................................................................................435
IPv6 Header Fields...................................................................................................................................................436
Extension Header Fields..........................................................................................................................................438
Addressing................................................................................................................................................................439
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