v
Displaying FIB table entries ········································································································································· 110
Configuring load sharing ······································································································································· 112
Overview ······································································································································································· 112
Configuring load sharing ············································································································································ 112
Enabling local-first load sharing ································································································································· 112
Load sharing configuration example ························································································································· 113
Network requirements ········································································································································· 113
Configuration procedure ···································································································································· 113
Verifying the configuration ································································································································· 114
Configuring IRDP ····················································································································································· 115
Overview ······································································································································································· 115
IRDP operation ····················································································································································· 115
Basic concepts ····················································································································································· 116
Protocols and standards ····································································································································· 116
Configuration procedure ············································································································································· 116
IRDP configuration example ········································································································································ 117
Network requirements ········································································································································· 117
Configuration procedure ···································································································································· 118
Verifying the configuration ································································································································· 119
Optimizing IP performance ···································································································································· 120
Enabling an interface to receive and forward directed broadcasts destined for the directly connected network
······················································································································································································· 120

Configuration procedure ···································································································································· 120
Configuration example ······································································································································· 121
Configuring MTU for an interface ······························································································································ 121
Configuring TCP MSS for an interface ······················································································································ 122
Configuring TCP path MTU discovery ······················································································································· 122
Enabling TCP SYN Cookie ·········································································································································· 123
Configuring the TCP buffer size ·································································································································· 124
Configuring TCP timers ················································································································································ 124
Enabling sending ICMP error messages ···················································································································· 124
Disabling forwarding ICMP fragments ······················································································································ 126
Configuring rate limit for ICMP error messages ······································································································· 126
Specifying the source address for ICMP packets ····································································································· 126
Configuring IP virtual fragment reassembly ·············································································································· 127
Configuration guidelines ···································································································································· 127
Configuration procedure ···································································································································· 127
Displaying and maintaining IP performance optimization ······················································································ 128
Configuring UDP helper·········································································································································· 129
Overview ······································································································································································· 129
Configuration guidelines ············································································································································· 129
Configuration procedure ············································································································································· 129
Displaying and maintaining UDP helper ··················································································································· 130
UDP helper configuration example ···························································································································· 130
Network requirements ········································································································································· 130
Configuration procedure ···································································································································· 130
Verifying the configuration ································································································································· 131
Configuring basic IPv6 settings ······························································································································ 132
Overview ······································································································································································· 132
IPv6 features ························································································································································· 132
IPv6 addresses ····················································································································································· 133
IPv6 ND protocol ················································································································································· 136
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