R2511-HP MSR Router Series Layer 3 - IP Services Configuration Guide(V5)
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Configuration procedure ···································································································································· 104
Verifying the configuration ································································································································· 105
Optimizing IP performance ···································································································································· 107
Enabling forwarding of directed broadcasts to a directly connected network ····················································· 107
Enabling forwarding of directed broadcasts to a directly connected network ············································· 107
Forwarding directed broadcasts configuration example ················································································ 107
Configuring TCP attributes ·········································································································································· 108
Configuring TCP MSS for the interface ············································································································· 108
Configuring TCP path MTU discovery ··············································································································· 109
Configuring the TCP send/receive buffer size ································································································· 110
Configuring TCP timers ······································································································································· 110
Configuring ICMP to send error packets ··················································································································· 111
Advantages of sending ICMP error packets ····································································································· 111
Disadvantages of sending ICMP error packets ································································································ 112
Configuration procedure ···································································································································· 112
Enabling support for ICMP extensions ······················································································································· 113
ICMP extensions for MPLS ·································································································································· 113
Handling ICMP messages ·································································································································· 113
Configuration procedure ···································································································································· 114
Configuring IP virtual fragment reassembly ·············································································································· 114
Configuration guidelines ···································································································································· 114
Configuration procedure ···································································································································· 115
Configuration example ······································································································································· 115
Displaying and maintaining IP performance optimization ············································································· 116
Configuring NAT ····················································································································································· 117
Overview ······································································································································································· 117
NAT control ·························································································································································· 118
NAT operation ····················································································································································· 118
NAT configuration task list ·········································································································································· 121
Configuring address translation ································································································································· 122
Configuring static NAT ······································································································································· 122
Configuring dynamic NAT ································································································································· 123
Configuring an internal server ···································································································································· 125
Configuring a common internal server ············································································································· 125
Configuring DNS mapping ········································································································································· 126
Configuring NAT aging time ······································································································································ 126
Configuring NAT ALG ················································································································································· 127
Configuring NAT logging ··········································································································································· 127
Enabling NAT logging ········································································································································ 127
Exporting NAT logs ············································································································································· 128
Setting NAT connection limits ····································································································································· 129
Enabling aging out NAT entries upon master link failure ························································································ 130
Displaying and maintaining NAT······························································································································· 130
NAT configuration examples ······································································································································ 131
One-to-one static NAT configuration example ································································································· 131
Dynamic NAT configuration example 1 ··········································································································· 132
Dynamic NAT configuration example 2 ··········································································································· 133
Common internal server configuration example ······························································································ 134
NAT DNS mapping configuration example ····································································································· 135
Exporting NAT logs to the information center ·································································································· 136
Exporting NAT logs to log server ······················································································································ 138
Troubleshooting NAT ··················································································································································· 139
Symptom 1 ··························································································································································· 139