Users Guide

View Advanced Interface Information............................................................................................................................ 396
Conguring the Interface Sampling Size...................................................................................................................397
Dynamic Counters..........................................................................................................................................................398
Clearing Interface Counters..................................................................................................................................... 399
Enhanced Validation of Interface Ranges.......................................................................................................................399
Compressing Conguration Files....................................................................................................................................399
23 Internet Protocol Security (IPSec)............................................................................ 403
Conguring IPSec ......................................................................................................................................................... 403
24 IPv4 Routing............................................................................................................. 405
IP Addresses.................................................................................................................................................................. 405
Implementation Information..................................................................................................................................... 405
Conguration Tasks for IP Addresses............................................................................................................................. 405
Assigning IP Addresses to an Interface...........................................................................................................................406
Conguring Static Routes.............................................................................................................................................. 406
Congure Static Routes for the Management Interface.................................................................................................408
IPv4 Path MTU Discovery Overview..............................................................................................................................409
Using the Congured Source IP Address in ICMP Messages......................................................................................... 409
Conguring the ICMP Source Interface................................................................................................................... 409
Conguring the Duration to Establish a TCP Connection................................................................................................410
Enabling Directed Broadcast........................................................................................................................................... 410
Resolution of Host Names.............................................................................................................................................. 410
Enabling Dynamic Resolution of Host Names.................................................................................................................. 411
Specifying the Local System Domain and a List of Domains............................................................................................ 411
Conguring DNS with Traceroute................................................................................................................................... 412
ARP................................................................................................................................................................................ 412
Conguration Tasks for ARP........................................................................................................................................... 413
Conguring Static ARP Entries....................................................................................................................................... 413
Enabling Proxy ARP........................................................................................................................................................ 413
Clearing ARP Cache........................................................................................................................................................414
ARP Learning via Gratuitous ARP................................................................................................................................... 414
Enabling ARP Learning via Gratuitous ARP..................................................................................................................... 414
ARP Learning via ARP Request.......................................................................................................................................415
Conguring ARP Retries................................................................................................................................................. 415
ICMP.............................................................................................................................................................................. 416
Conguration Tasks for ICMP......................................................................................................................................... 416
Enabling ICMP Unreachable Messages...........................................................................................................................416
UDP Helper.....................................................................................................................................................................417
Congure UDP Helper...............................................................................................................................................417
Important Points to Remember.................................................................................................................................417
Enabling UDP Helper.......................................................................................................................................................417
Conguring a Broadcast Address.................................................................................................................................... 417
Congurations Using UDP Helper................................................................................................................................... 418
UDP Helper with Broadcast-All Addresses......................................................................................................................418
UDP Helper with Subnet Broadcast Addresses...............................................................................................................419
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