H3C SR8800-F Configuration Manual page 10

Configuring DHCP snooping ··························································· 157
About DHCP snooping ············································································································ 157
Application of trusted and untrusted ports ············································································· 157
DHCP snooping support for Option 82 ················································································· 158
Restrictions and guidelines: DHCP snooping configuration ····························································· 159
DHCP snooping tasks at a glance ····························································································· 159
Configuring basic DHCP snooping ····························································································· 159
Configuring Option 82 ············································································································· 160
Configuring DHCP snooping entry auto backup ············································································ 161
Enabling DHCP starvation attack protection ················································································· 162
Enabling DHCP-REQUEST attack protection ··············································································· 162
Setting the maximum number of DHCP snooping entries ································································ 163
Configuring a DHCP packet blocking port ···················································································· 163
Enabling DHCP snooping logging ······························································································ 164
Display and maintenance commands for DHCP snooping ······························································· 164
DHCP snooping configuration examples ····················································································· 165
Example: Configuring basic DHCP snooping ········································································· 165
Example: Configuring DHCP snooping support for Option 82 ···················································· 166
Configuring the BOOTP client ························································· 168
About BOOTP client ··············································································································· 168
BOOTP application ·········································································································· 168
Obtaining an IP address dynamically ··················································································· 168
Protocols and standards ··································································································· 168
Configuring an interface to use BOOTP for IP address acquisition ···················································· 168
Display and maintenance commands for BOOTP client ·································································· 169
BOOTP client configuration examples ························································································ 169
Example: Configuring BOOTP client ···················································································· 169
DHCPv6 overview ········································································ 170
DHCPv6 address/prefix assignment ··························································································· 170
Rapid assignment involving two messages ··········································································· 170
Assignment involving four messages ··················································································· 170
Address/prefix lease renewal ···································································································· 171
Stateless DHCPv6 ················································································································· 172
DHCPv6 options ···················································································································· 172
Option 18 ······················································································································· 172
Option 37 ······················································································································· 173
Protocols and standards ·········································································································· 174
Configuring the DHCPv6 server ······················································ 175
About DHCPv6 server ············································································································· 175
IPv6 address assignment ·································································································· 175
IPv6 prefix assignment ····································································································· 175
Concepts ······················································································································· 176
DHCPv6 address pool ······································································································ 176
IPv6 address/prefix allocation sequence ··············································································· 177
DHCPv6 server tasks at a glance ······························································································ 178
Configuring IPv6 prefix assignment ···························································································· 178
Configuring IPv6 address assignment ························································································ 180
Configuring network parameters assignment ··············································································· 181
Configuring network parameters in a DHCPv6 address pool ····················································· 182
Configuring network parameters in a DHCPv6 option group ····················································· 182
Configuring a DHCPv6 policy for IPv6 address and prefix assignment ··············································· 183
Configuring the DHCPv6 server on an interface ············································································ 184
Allocating different IPv6 addresses to DHCPv6 clients with the same MAC ········································ 185
Setting the DSCP value for DHCPv6 packets sent by the DHCPv6 server ·········································· 185
Configuring DHCPv6 binding auto backup ··················································································· 186
Advertising subnets assigned to clients ······················································································· 186
Applying a DHCPv6 address pool to a VPN instance ····································································· 187
Configuring the DHCPv6 server security features ········································································· 188
v