Service Manual

Clearing Interface Counters...........................................................................................................................416
23 Internet Protocol Security (IPSec)................................................................................................................. 418
Configuring IPSec ................................................................................................................................................. 418
24 IPv4 Routing......................................................................................................................................................420
IP Addresses.............................................................................................................................................................421
Implementation Information..........................................................................................................................421
Configuration Tasks for IP Addresses.................................................................................................................421
Assigning IP Addresses to an Interface.............................................................................................................. 421
Configuring Static Routes.................................................................................................................................... 422
Configure Static Routes for the Management Interface............................................................................... 423
IPv4 Path MTU Discovery Overview...................................................................................................................424
Using the Configured Source IP Address in ICMP Messages....................................................................... 424
Configuring the ICMP Source Interface......................................................................................................424
Configuring the Duration to Establish a TCP Connection............................................................................ 425
Enabling Directed Broadcast............................................................................................................................... 425
Resolution of Host Names................................................................................................................................... 425
Enabling Dynamic Resolution of Host Names.................................................................................................426
Specifying the Local System Domain and a List of Domains....................................................................... 426
Configuring DNS with Traceroute......................................................................................................................427
ARP............................................................................................................................................................................ 427
Configuration Tasks for ARP................................................................................................................................428
Configuring Static ARP Entries............................................................................................................................428
Enabling Proxy ARP............................................................................................................................................... 428
Clearing ARP Cache.............................................................................................................................................. 429
ARP Learning via Gratuitous ARP........................................................................................................................429
Enabling ARP Learning via Gratuitous ARP.......................................................................................................429
ARP Learning via ARP Request............................................................................................................................ 430
Configuring ARP Retries....................................................................................................................................... 430
ICMP..........................................................................................................................................................................431
Configuration Tasks for ICMP..............................................................................................................................431
Enabling ICMP Unreachable Messages..............................................................................................................431
UDP Helper..............................................................................................................................................................432
Configure UDP Helper.................................................................................................................................... 432
Important Points to Remember.................................................................................................................... 432
Enabling UDP Helper.............................................................................................................................................432
Configuring a Broadcast Address....................................................................................................................... 432
Configurations Using UDP Helper......................................................................................................................433
UDP Helper with Broadcast-All Addresses.......................................................................................................433
UDP Helper with Subnet Broadcast Addresses............................................................................................... 434
UDP Helper with Configured Broadcast Addresses....................................................................................... 434
UDP Helper with No Configured Broadcast Addresses.................................................................................435
Troubleshooting UDP Helper.............................................................................................................................. 435
25 IPv6 Routing...................................................................................................................................................... 436
Protocol Overview.................................................................................................................................................436
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