H3C MSR 2600 Configuration Manual page 12

Bidirectional NAT for internal-to-external access ····························································································· 131
NAT Server for external-to-internal access ········································································································ 133
NAT Server for external-to-internal access through domain name ································································· 136
Bidirectional NAT for external-to-internal access through NAT Server ·························································· 138
NAT hairpin in C/S mode ································································································································· 141
NAT hairpin in P2P mode for access between internal users ········································································· 144
Twice NAT for access between two VPNs with overlapping addresses ······················································· 146
Load sharing NAT Server configuration example ··························································································· 148
NAT with DNS mapping configuration example ····························································································· 150
Basic IP forwarding on the device ························································································································· 154
FIB table ········································································································································································ 154
Displaying FIB table entries ········································································································································· 154
Configuring fast forwarding ··································································································································· 156
Overview ······································································································································································· 156
Configuration procedure ············································································································································· 156
Displaying and maintaining fast forwarding ············································································································ 156
Fast forwarding configuration example ····················································································································· 157
Network requirements ········································································································································· 157
Configuration procedure ···································································································································· 157
Verifying the configuration ································································································································· 158
Displaying the adjacency table ····························································································································· 159
Optimizing IP performance ···································································································································· 161
Enabling an interface to receive and forward directed broadcasts destined for the directly connected network
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Configuration procedure ···································································································································· 161
Configuration example ······································································································································· 162
Configuring MTU for an interface ······························································································································ 162
Configuring TCP MSS for an interface ······················································································································ 163
Configuring TCP path MTU discovery ······················································································································· 163
Enabling TCP SYN Cookie ·········································································································································· 164
Configuring the TCP buffer size ·································································································································· 165
Configuring TCP timers ················································································································································ 165
Enabling sending ICMP error packets ······················································································································· 165
Configuring rate limit for ICMP error messages ······································································································· 167
Specifying the source address for ICMP packets ····································································································· 167
Configuring IP virtual fragment reassembly ·············································································································· 168
Configuration guidelines ···································································································································· 168
Configuration procedure ···································································································································· 168
Configuration example ······································································································································· 168
Displaying and maintaining IP performance optimization ······················································································ 169
Configuring UDP helper·········································································································································· 171
Overview ······································································································································································· 171
Configuration guidelines ············································································································································· 171
Configuration procedure ············································································································································· 171
Displaying and maintaining UDP helper ··················································································································· 172
UDP helper configuration example ···························································································································· 172
Network requirements ········································································································································· 172
Configuration procedure ···································································································································· 172
Verifying the configuration ································································································································· 173
Configuring basic IPv6 settings ······························································································································ 174
Overview ······································································································································································· 174
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