HP MSR2000/3000/4000 Router Series Layer 3 - IP Services Configuration Guide
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Bidirectional NAT for internal-to-external access ····························································································· 130
NAT Server for external-to-internal access ········································································································ 132
NAT Server for external-to-internal access through domain name ································································· 135
Bidirectional NAT for external-to-internal access through NAT Server ·························································· 137
NAT hairpin in C/S mode ································································································································· 140
NAT hairpin in P2P mode for access between internal users ········································································· 143
Twice NAT for access between two VPNs with overlapping addresses ······················································· 145
Load sharing NAT Server configuration example ··························································································· 147
NAT with DNS mapping configuration example ····························································································· 149
Basic IP forwarding on the device ························································································································· 153
FIB table ········································································································································································ 153
Displaying FIB table entries ········································································································································· 153
Configuring fast forwarding ··································································································································· 155
Overview ······································································································································································· 155
Configuration procedure ············································································································································· 155
Displaying and maintaining fast forwarding ············································································································ 155
Fast forwarding configuration example ····················································································································· 156
Network requirements ········································································································································· 156
Configuration procedure ···································································································································· 156
Verifying the configuration ································································································································· 157
Displaying the adjacency table ····························································································································· 158
Optimizing IP performance ···································································································································· 160
Enabling an interface to receive and forward directed broadcasts destined for the directly connected network
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Configuration procedure ···································································································································· 160
Configuration example ······································································································································· 161
Configuring MTU for an interface ······························································································································ 161
Configuring TCP MSS for an interface ······················································································································ 162
Configuring TCP path MTU discovery ······················································································································· 162
Enabling TCP SYN Cookie ·········································································································································· 163
Configuring the TCP buffer size ·································································································································· 164
Configuring TCP timers ················································································································································ 164
Enabling sending ICMP error packets ······················································································································· 164
Configuring rate limit for ICMP error messages ······································································································· 166
Specifying the source address for ICMP packets ····································································································· 166
Configuring IP virtual fragment reassembly ·············································································································· 167
Configuration guidelines ···································································································································· 167
Configuration procedure ···································································································································· 167
Configuration example ······································································································································· 167
Displaying and maintaining IP performance optimization ······················································································ 168
Configuring UDP helper·········································································································································· 170
Overview ······································································································································································· 170
Configuration guidelines ············································································································································· 170
Configuration procedure ············································································································································· 170
Displaying and maintaining UDP helper ··················································································································· 171
UDP helper configuration example ···························································································································· 171
Network requirements ········································································································································· 171
Configuration procedure ···································································································································· 171
Verifying the configuration ································································································································· 172
Configuring basic IPv6 settings ······························································································································ 173
Overview ······································································································································································· 173