Users Guide

Implementation Information.................................................................................................................................... 418
Conguration Tasks for IP Addresses.......................................................................................................................... 418
Assigning IP Addresses to an Interface........................................................................................................................418
Conguring Static Routes............................................................................................................................................. 419
Congure Static Routes for the Management Interface..........................................................................................420
Using the Congured Source IP Address in ICMP Messages...................................................................................421
Conguring the ICMP Source Interface................................................................................................................ 421
Conguring the Duration to Establish a TCP Connection......................................................................................... 421
Enabling Directed Broadcast........................................................................................................................................ 422
Resolution of Host Names............................................................................................................................................422
Enabling Dynamic Resolution of Host Names............................................................................................................422
Specifying the Local System Domain and a List of Domains....................................................................................423
Conguring DNS with Traceroute................................................................................................................................423
ARP..................................................................................................................................................................................424
Conguration Tasks for ARP........................................................................................................................................ 424
Conguring Static ARP Entries....................................................................................................................................424
Enabling Proxy ARP.......................................................................................................................................................425
Clearing ARP Cache......................................................................................................................................................425
ARP Learning via Gratuitous ARP................................................................................................................................425
Enabling ARP Learning via Gratuitous ARP................................................................................................................426
ARP Learning via ARP Request................................................................................................................................... 426
Conguring ARP Retries............................................................................................................................................... 427
ICMP................................................................................................................................................................................427
Conguration Tasks for ICMP...................................................................................................................................... 427
Enabling ICMP Unreachable Messages.......................................................................................................................427
UDP Helper.....................................................................................................................................................................428
Congure UDP Helper.............................................................................................................................................428
Important Points to Remember..............................................................................................................................428
Enabling UDP Helper.....................................................................................................................................................428
Conguring a Broadcast Address................................................................................................................................ 429
Congurations Using UDP Helper............................................................................................................................... 429
UDP Helper with Broadcast-All Addresses.................................................................................................................429
UDP Helper with Subnet Broadcast Addresses.........................................................................................................430
UDP Helper with Congured Broadcast Addresses..................................................................................................430
UDP Helper with No Congured Broadcast Addresses.............................................................................................431
Troubleshooting UDP Helper.........................................................................................................................................431
22 IPv6 Routing............................................................................................................................................432
Protocol Overview.........................................................................................................................................................432
Extended Address Space........................................................................................................................................433
Stateless Autoconguration................................................................................................................................... 433
IPv6 Headers............................................................................................................................................................433
Longest Prex Match (LPM) Table and IPv6 /65 – /128 support....................................................................434
IPv6 Header Fields...................................................................................................................................................435
Extension Header Fields..........................................................................................................................................437
Addressing................................................................................................................................................................ 438
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