Preface................................................................................................................................................... 13
About This Guide................................................................................................................................................13
Audience .......................................................................................................................................................13
List of Technical Publications ........................................................................................................................14
Technical Support .........................................................................................................................................15
Getting Started...................................................................................................................................... 17
In This Chapter ...................................................................................................................................................17
IP Router Configuration ...................................................................................................................... 19
In This Chapter ...................................................................................................................................................19
Interfaces.......................................................................................................................................................20
Network Interface .....................................................................................................................................21
System Interface ......................................................................................................................................25
IP Addresses .................................................................................................................................................26
Internet Protocol Versions .............................................................................................................................27
IPv6 Address Format ...............................................................................................................................28
IPv6 Headers ...........................................................................................................................................29
Neighbor Discovery ..................................................................................................................................30
Router ID .......................................................................................................................................................31
Autonomous Systems ...................................................................................................................................32
DHCP ............................................................................................................................................................32
DHCP Relay and DHCPv6 Relay.............................................................................................................33
Local DHCP Server ..................................................................................................................................34
ICMP and ICMPv6.........................................................................................................................................36
NAT ...............................................................................................................................................................41
Session Creation ......................................................................................................................................42
NAT Zones ...............................................................................................................................................43
NAT Security Profile .................................................................................................................................47
NAT Policies.............................................................................................................................................49
Dynamic Source NAT ..............................................................................................................................50
Local Traffic and NAT .............................................................................................................................51
Session Resource Alarms ........................................................................................................................52
Configuration Notes............................................................................................................................................56
Reference Sources........................................................................................................................................56
Router Configuration Overview ..........................................................................................................................58
System Interface ...........................................................................................................................................58
7705 SAR OS Router Configuration Guide
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