Users Guide

Auto-Negotiation on Ethernet Interfaces....................................................................................................................... 395
Setting the Speed and Duplex Mode of Ethernet Interfaces.................................................................................... 396
Set Auto-Negotiation Options.................................................................................................................................. 397
View Advanced Interface Information............................................................................................................................ 398
Conguring the Interface Sampling Size.................................................................................................................. 399
Dynamic Counters..........................................................................................................................................................400
Clearing Interface Counters..................................................................................................................................... 400
Compressing Conguration Files.....................................................................................................................................401
23 Internet Protocol Security (IPSec)............................................................................404
Conguring IPSec ......................................................................................................................................................... 404
24 IPv4 Routing............................................................................................................. 406
IP Addresses.................................................................................................................................................................. 406
Implementation Information..................................................................................................................................... 406
Conguration Tasks for IP Addresses............................................................................................................................. 406
Assigning IP Addresses to an Interface...........................................................................................................................407
Conguring Static Routes.............................................................................................................................................. 407
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.......................................................................................................................................414
Conguring ARP Retries................................................................................................................................................. 415
ICMP.............................................................................................................................................................................. 416
Conguration Tasks for ICMP......................................................................................................................................... 416
Enabling ICMP Unreachable Messages...........................................................................................................................416
UDP Helper.....................................................................................................................................................................416
Congure UDP Helper.............................................................................................................................................. 416
Important Points to Remember.................................................................................................................................416
Enabling UDP Helper.......................................................................................................................................................417
Conguring a Broadcast Address.................................................................................................................................... 417
Congurations Using UDP Helper................................................................................................................................... 418
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