Users Guide

Set Auto-Negotiation Options..................................................................................................................................398
View Advanced Interface Information............................................................................................................................ 398
Conguring the Interface Sampling Size.................................................................................................................. 399
Dynamic Counters..........................................................................................................................................................400
Clearing Interface Counters...................................................................................................................................... 401
Enhanced Validation of Interface Ranges........................................................................................................................401
23 Internet Protocol Security (IPSec)............................................................................ 402
Conguring IPSec ......................................................................................................................................................... 402
24 IPv4 Routing............................................................................................................. 404
IP Addresses.................................................................................................................................................................. 404
Implementation Information......................................................................................................................................404
Conguration Tasks for IP Addresses............................................................................................................................. 404
Assigning IP Addresses to an Interface.......................................................................................................................... 405
Conguring Static Routes.............................................................................................................................................. 405
Congure Static Routes for the Management Interface.................................................................................................407
IPv4 Path MTU Discovery Overview..............................................................................................................................408
Using the Congured Source IP Address in ICMP Messages......................................................................................... 408
Conguring the ICMP Source Interface................................................................................................................... 408
Conguring the Duration to Establish a TCP Connection............................................................................................... 409
Enabling Directed Broadcast.......................................................................................................................................... 409
Resolution of Host Names............................................................................................................................................. 409
Enabling Dynamic Resolution of Host Names..................................................................................................................410
Specifying the Local System Domain and a List of Domains............................................................................................410
Conguring DNS with Traceroute.................................................................................................................................... 411
ARP................................................................................................................................................................................. 411
Conguration Tasks for ARP........................................................................................................................................... 412
Conguring Static ARP Entries....................................................................................................................................... 412
Enabling Proxy ARP........................................................................................................................................................ 412
Clearing ARP Cache........................................................................................................................................................413
ARP Learning via Gratuitous ARP................................................................................................................................... 413
Enabling ARP Learning via Gratuitous ARP..................................................................................................................... 413
ARP Learning via ARP Request.......................................................................................................................................414
Conguring ARP Retries................................................................................................................................................. 414
ICMP.............................................................................................................................................................................. 415
Conguration Tasks for ICMP......................................................................................................................................... 415
Enabling ICMP Unreachable Messages...........................................................................................................................415
UDP Helper.....................................................................................................................................................................416
Congure UDP Helper.............................................................................................................................................. 416
Important Points to Remember.................................................................................................................................416
Enabling UDP Helper.......................................................................................................................................................416
Conguring a Broadcast Address....................................................................................................................................416
Congurations Using UDP Helper................................................................................................................................... 417
UDP Helper with Broadcast-All Addresses...................................................................................................................... 417
UDP Helper with Subnet Broadcast Addresses...............................................................................................................418
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