vii
Configuring IRDP ························································································ 204
Overview ························································································································································ 204
IRDP operation ······································································································································· 204
Basic concepts ······································································································································· 204
Protocols and standards ························································································································ 205
Configuration procedure ································································································································ 205
IRDP configuration example ·························································································································· 206
Network requirements ···························································································································· 206
Configuration procedure ························································································································· 206
Verifying the configuration ······················································································································ 207
Optimizing IP performance ········································································· 208
Command and hardware compatibility ··········································································································· 208
Enabling an interface to receive and forward directed broadcasts destined for the directly connected network
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Configuration procedure ························································································································· 208
Configuration example ··························································································································· 209
Setting MTU for an interface ·························································································································· 210
Setting TCP MSS for an interface ·················································································································· 210
Configuring TCP path MTU discovery ··········································································································· 210
Enabling TCP SYN Cookie ···························································································································· 211
Setting the TCP buffer size ···························································································································· 212
Setting TCP timers ········································································································································· 212
Enabling sending ICMP error messages ······································································································· 212
Configuring rate limit for ICMP error messages ····························································································· 214
Specifying the source address for ICMP packets ·························································································· 214
Enabling IPv4 local fragment reassembly ······································································································ 215
Displaying and maintaining IP performance optimization ·············································································· 215
Configuring UDP helper ·············································································· 218
Overview ························································································································································ 218
Configuration restrictions and guidelines ······································································································· 218
Configuring UDP helper to convert broadcast to unicast ··············································································· 218
Configuring UDP helper to convert broadcast to multicast ············································································ 219
Configuring UDP helper to convert multicast to broadcast or unicast ···························································· 220
Displaying and maintaining UDP helper ········································································································ 220
UDP helper configuration examples ·············································································································· 221
Configuring UDP helper to convert broadcast to unicast ······································································· 221
Configuring UDP helper to convert broadcast to multicast ···································································· 221
Configuring UDP helper to convert multicast to broadcast ···································································· 223
Configuring basic IPv6 settings ··································································· 224
Overview ························································································································································ 224
IPv6 features ·········································································································································· 224
IPv6 addresses ······································································································································ 225
IPv6 ND protocol ···································································································································· 227
IPv6 path MTU discovery ······················································································································· 229
IPv6 transition technologies ··························································································································· 230
Dual stack ·············································································································································· 230
Tunneling ··············································································································································· 230
NAT-PT ·················································································································································· 231
6PE ························································································································································ 231
Command and hardware compatibility ··········································································································· 231
Protocols and standards ································································································································ 231
IPv6 basics configuration task list ·················································································································· 232
Assigning IPv6 addresses to interfaces ········································································································· 233
Configuring an IPv6 global unicast address ··························································································· 233
Configuring an IPv6 link-local address ··································································································· 235
Configuring an IPv6 anycast address ···································································································· 236
Configuring IPv6 ND ······································································································································ 236
Configuring a static neighbor entry ········································································································ 237