HP VPN Firewall Appliances Network Management Configuration Guide

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Configuring inline Layer 2 forwarding ······················································································································ 136
Configuration restrictions and guidelines ········································································································· 137
Configuring inline forwarding in the Web interface ······················································································· 137
Configuring inline forwarding at the CLI ·········································································································· 139
Configuration guidelines ···································································································································· 141
Configuring inter-VLAN Layer 2 forwarding ············································································································· 141
How inter-VLAN Layer 2 forwarding works ····································································································· 141
Configuration procedure ···································································································································· 142
Displaying and maintaining inter-VLAN Layer 2 forwarding ········································································· 144
Inter-VLAN Layer 2 forwarding configuration example ·················································································· 144
Displaying frame forwarding statistics ······················································································································· 146
Overview ······························································································································································ 146
Displaying frame forwarding statistics ·············································································································· 146
DHCP overview ······················································································································································· 147
DHCP address allocation ············································································································································ 147
Allocation mechanisms ······································································································································· 147
Dynamic IP address allocation process············································································································· 148
IP address lease extension·································································································································· 148
DHCP message format ················································································································································· 149
DHCP options ······························································································································································· 150
Common DHCP options ······································································································································ 150
Custom options ···················································································································································· 150
Protocols and standards ·············································································································································· 154
Configuring the DHCP server ································································································································· 155
Overview ······································································································································································· 155
DHCP address pool ············································································································································· 155
IP address allocation sequence ·························································································································· 156
DHCP server configuration guidelines ·············································································································· 156
Configuring the DHCP server in the Web interface ································································································· 157
Recommended configuration procedure ··········································································································· 157
Enabling DHCP ···················································································································································· 157
Creating a static address pool for the DHCP server ························································································ 158
Creating a dynamic address pool for the DHCP server ·················································································· 160
Enabling the DHCP server on an interface ······································································································· 161
Displaying information about assigned IP addresses ······················································································ 162
Static IP address assignment configuration example······················································································· 163
Dynamic IP address allocation configuration example ··················································································· 166
Configuring the DHCP server at the CLI ···················································································································· 170
DHCP server configuration task list ··················································································································· 170
Configuring an address pool on the DHCP server ·························································································· 170
Enabling DHCP ···················································································································································· 177
Enabling the DHCP server on an interface ······································································································· 177
Applying an extended address pool on an interface ······················································································ 178
Configuring the DHCP server security functions ······························································································· 179
Enabling client offline detection ························································································································· 179
Enabling handling of Option 82 ······················································································································· 180
Specifying the threshold for sending trap messages ······················································································· 180
Displaying and maintaining the DHCP server ·································································································· 181
Static IP address assignment configuration example······················································································· 182
Dynamic IP address allocation configuration example ··················································································· 183
Self-defined option configuration example ······································································································· 184
Troubleshooting DHCP server configuration ············································································································· 185