8
Enabling IGMP snooping globally ·························································································································· 255
Configuring IGMP snooping in a VLAN ················································································································ 256
Configuring IGMP snooping port functions ··········································································································· 257
Display IGMP snooping multicast entry information ····························································································· 258
IGMP snooping configuration example························································································································ 259
Routing configuration ·············································································································································· 266
Routing table ····························································································································································· 266
Static route ································································································································································· 266
Default route ······························································································································································ 267
Configuring IPv4 routing ················································································································································ 267
Displaying the IPv4 active route table ···················································································································· 267
Creating an IPv4 static route ··································································································································· 268
Static route configuration example ······························································································································· 269
Precautions ······································································································································································ 273
DHCP overview ······················································································································································· 274
Introduction to DHCP ······················································································································································ 274
DHCP address allocation ··············································································································································· 274
Allocation mechanisms ············································································································································· 274
Dynamic IP address allocation process ·················································································································· 275
IP address lease extension ······································································································································· 275
DHCP message format ··················································································································································· 276
DHCP options ·································································································································································· 277
DHCP options overview ··········································································································································· 277
Introduction to DHCP options ·································································································································· 277
Introduction to Option 82 ········································································································································ 277
Protocols and standards ················································································································································· 278
DHCP relay agent configuration ···························································································································· 279
Introduction to DHCP relay agent ································································································································· 279
Application environment ·········································································································································· 279
Fundamentals ···························································································································································· 279
DHCP relay agent configuration task list ······················································································································ 280
Enabling DHCP and configuring advanced parameters for the DHCP relay agent ················································ 281
Creating a DHCP server group ····································································································································· 282
Enabling the DHCP relay agent on an interface ········································································································· 283
Configuring and displaying clients' IP-to-MAC bindings ···························································································· 284
DHCP relay agent configuration example ··················································································································· 285
DHCP snooping configuration ······························································································································· 288
DHCP snooping overview ·············································································································································· 288
Functions of DHCP snooping ··································································································································· 288
Application environment of trusted ports ················································································································ 289
DHCP snooping support for Option 82 ················································································································· 290
DHCP snooping configuration task list ························································································································· 290
Enabling DHCP snooping ·············································································································································· 291
Configuring DHCP snooping functions on an interface ······························································································ 293
Displaying clients' IP-to-MAC bindings ························································································································· 293
DHCP snooping configuration example ······················································································································· 294
Service management configuration ······················································································································· 299
Configuring service management ································································································································· 300
Diagnostic tools ······················································································································································· 302
Ping ············································································································································································ 302
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