vii
Static route ··························································································································································· 278
Default route ························································································································································· 279
Displaying the IPv4 active route table ······················································································································· 279
Creating an IPv4 static route ······································································································································· 280
Displaying the IPv6 active route table ······················································································································· 281
Creating an IPv6 static route ······································································································································· 281
IPv4 static route configuration example ····················································································································· 283
Network requirements ········································································································································· 283
Configuration considerations ····························································································································· 283
Configuration procedure ···································································································································· 283
Verifying the configuration ································································································································· 286
IPv6 static route configuration example ····················································································································· 287
Network requirements ········································································································································· 287
Configuration considerations ····························································································································· 287
Configuration procedure ···································································································································· 287
Verifying the configuration ································································································································· 290
Configuration guidelines ············································································································································· 291
DHCP overview ······················································································································································· 292
DHCP address allocation ············································································································································ 292
Allocation mechanisms ······································································································································· 292
IP address allocation process ····························································································································· 293
IP address lease extension·································································································································· 293
DHCP message format ················································································································································· 294
DHCP options ······························································································································································· 295
Common DHCP options ······································································································································ 295
Option 82 ···························································································································································· 295
Protocols and standards ·············································································································································· 296
Configuring DHCP relay agent ······························································································································ 297
Overview ······································································································································································· 297
Recommended configuration procedure···················································································································· 298
Enabling DHCP and configuring advanced parameters for the DHCP relay agent ············································· 299
Creating a DHCP server group ·································································································································· 300
Enabling the DHCP relay agent on an interface ······································································································ 301
Configuring and displaying clients' IP-to-MAC bindings ························································································· 302
DHCP relay agent configuration example ················································································································· 303
Configuring DHCP snooping ·································································································································· 306
Overview ······································································································································································· 306
Application of trusted ports ································································································································ 306
DHCP snooping support for Option 82 ············································································································ 308
Recommended configuration procedure···················································································································· 308
Enabling DHCP snooping ··········································································································································· 309
Configuring DHCP snooping functions on an interface ··························································································· 309
Displaying clients' IP-to-MAC bindings ······················································································································ 310
DHCP snooping configuration example ···················································································································· 311
Managing services ·················································································································································· 314
Overview ······································································································································································· 314
Managing services ······················································································································································· 315
Using diagnostic tools ············································································································································· 317
Ping ················································································································································································ 317
Traceroute ····································································································································································· 317
Ping operation ······························································································································································ 318
Traceroute operation ··········································································································································· 319
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