HPE FlexNetwork 10500 Series Configuration Manual page 6

DHCP snooping support for Option 82 ····································································································· 91
DHCP snooping configuration task list ············································································································· 92
Configuring basic DHCP snooping features ···································································································· 92
Restrictions and guidelines ······················································································································ 92
Configuring basic DHCP snooping features in a common network ························································· 93
Configuring basic DHCP snooping features in a VXLAN network ··························································· 94
Disabling DHCP snooping on an interface ······························································································· 95
Configuring Option 82 ······································································································································ 95
Configuring DHCP snooping entry auto backup ······························································································ 96
Enabling DHCP starvation attack protection ···································································································· 97
Enabling DHCP-REQUEST attack protection ·································································································· 98
Setting the maximum number of DHCP snooping entries ··············································································· 98
Configuring DHCP packet rate limit ················································································································· 99
Configuring a DHCP packet blocking port ······································································································· 99
Enabling DHCP snooping logging ···················································································································· 99
Displaying and maintaining DHCP snooping ································································································· 100
DHCP snooping configuration examples ······································································································· 100
Global basic DHCP snooping configuration example ············································································ 100
VLAN-specific DHCP snooping configuration example·········································································· 101
Option 82 configuration example ··········································································································· 102
Configuring the BOOTP client ···································································· 104
BOOTP application ········································································································································ 104
Obtaining an IP address dynamically ············································································································· 104
Protocols and standards ································································································································ 104
Configuring an interface to use BOOTP for IP address acquisition ······························································· 104
Displaying and maintaining BOOTP client ····································································································· 105
BOOTP client configuration example ············································································································· 105
Network requirements ···························································································································· 105
Configuration procedure ························································································································· 105
Verifying the configuration ······················································································································ 105
Configuring DNS ························································································ 106
Overview ························································································································································ 106
Static domain name resolution ··············································································································· 106
Dynamic domain name resolution ·········································································································· 106
DNS proxy ·············································································································································· 107
DNS configuration task list ····························································································································· 108
Configuring the IPv4 DNS client····················································································································· 108
Configuring static domain name resolution ···························································································· 108
Configuring dynamic domain name resolution ······················································································· 109
Configuring the IPv6 DNS client····················································································································· 109
Configuring static domain name resolution ···························································································· 109
Configuring dynamic domain name resolution ······················································································· 110
Configuring the DNS proxy ···························································································································· 111
Specifying the source interface for DNS packets ··························································································· 111
Configuring the DNS trusted interface ··········································································································· 112
Setting the DSCP value for outgoing DNS packets ······················································································· 112
Displaying and maintaining DNS···················································································································· 113
IPv4 DNS configuration examples ················································································································· 113
Static domain name resolution configuration example··········································································· 113
Dynamic domain name resolution configuration example ······································································ 114
IPv6 DNS configuration examples ················································································································· 117
Static domain name resolution configuration example··········································································· 117
Dynamic domain name resolution configuration example ······································································ 117
Troubleshooting IPv4 DNS configuration ······································································································· 120
Symptom ················································································································································ 120
Solution ·················································································································································· 120
Troubleshooting IPv6 DNS configuration ······································································································· 120
Symptom ················································································································································ 120
Solution ·················································································································································· 120
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