R3303-HP HSR6800 Routers Layer 3 - IP Services Configuration Guide
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Configuring IPv4 DNS ··············································································································································· 81
Overview ········································································································································································· 81
Static domain name resolution ····························································································································· 81
Dynamic domain name resolution ······················································································································· 81
DNS proxy ····························································································································································· 82
DNS spoofing ························································································································································ 83
Configuring the IPv4 DNS client ·································································································································· 84
Configuring static domain name resolution ········································································································ 84
Configuring dynamic domain name resolution ·································································································· 85
Configuring the DNS proxy ·········································································································································· 86
Configuring DNS spoofing ··········································································································································· 86
Specifying the source interface for DNS packets ······································································································· 86
Displaying and maintaining IPv4 DNS ························································································································ 87
IPv4 DNS configuration examples ······························································································································· 87
Static domain name resolution configuration example ····················································································· 87
Dynamic domain name resolution configuration example ··············································································· 88
DNS proxy configuration example ······················································································································ 91
Troubleshooting IPv4 DNS configuration ···················································································································· 93
Configuring NAT ························································································································································ 94
Overview ········································································································································································· 94
NAT control ···························································································································································· 95
NAT operation ······················································································································································· 95
NAT configuration task list ············································································································································ 98
Configuring address translation ··································································································································· 99
Configuring static NAT ········································································································································· 99
Configuring dynamic NAT ································································································································· 100
Configuring an internal server ···································································································································· 102
Configuring a common internal server ············································································································· 102
Configuring load sharing internal servers ········································································································ 103
Configuring DNS mapping ········································································································································· 103
Setting NAT connection limits ····································································································································· 104
Displaying and maintaining NAT······························································································································· 104
NAT configuration examples ······································································································································ 105
One-to-one static NAT configuration example ································································································· 105
Common internal server configuration example ······························································································ 105
Load sharing internal server configuration example ······················································································· 106
NAT DNS mapping configuration example ····································································································· 107
Troubleshooting NAT ··················································································································································· 109
Symptom 1 ··························································································································································· 109
Solution ································································································································································· 109
Symptom 2 ··························································································································································· 109
Solution ································································································································································· 109
Basic forwarding on the device ····························································································································· 110
FIB table ········································································································································································ 110
Displaying and maintaining the FIB table ················································································································· 110
Configuring load sharing ······································································································································· 112
Configuring bandwidth-based load sharing ············································································································· 112
Configuring the load sharing mode ··························································································································· 113
Configuring flow classification ······························································································································· 114
Overview ······································································································································································· 114
Enabling flow classification ········································································································································· 114
Configuring flow classification policy ························································································································ 114