Contents 31
What is the Administrator’s Role? . . . . . . . . . 863
Default Dot1ag Values. . . . . . . . . . . . . . . . . . 864
Configuring Dot1ag (Web) . . . . . . . . . . . . . . . . 865
Dot1ag Global Configuration . . . . . . . . . . . . 865
Dot1ag MD Configuration. . . . . . . . . . . . . . 865
Dot1ag MA Configuration. . . . . . . . . . . . . . 866
Dot1ag MEP Configuration . . . . . . . . . . . . . 867
Dot1ag MIP Configuration . . . . . . . . . . . . . 868
Dot1ag RMEP Summary . . . . . . . . . . . . . . 869
Dot1ag L2 Ping . . . . . . . . . . . . . . . . . . . 870
Dot1ag L2 Traceroute. . . . . . . . . . . . . . . . 870
Dot1ag L2 Traceroute Cache . . . . . . . . . . . . 871
Dot1ag Statistics . . . . . . . . . . . . . . . . . . 872
Configuring Dot1ag (CLI). . . . . . . . . . . . . . . . . 873
Configuring Dot1ag Global Settings and
CreatingDomains. . . . . . . . . . . . . . . . . . 873
Configuring MEP Information. . . . . . . . . . . . 874
Dot1ag Ping and Traceroute . . . . . . . . . . . . 875
Dot1ag Configuration Example . . . . . . . . . . . . . 876
27 Snooping and Inspecting Traffic. . . . . . 879
Traffic Snooping and Inspection Overview . . . . . . . 879
What Is DHCP Snooping?. . . . . . . . . . . . . . 880
How Is the DHCP Snooping Bindings
DatabasePopu lated?. . . . . . . . . . . . . . . . 881
What Is IP Source Guard? . . . . . . . . . . . . . 883
What is Dynamic ARP Inspection?. . . . . . . . . 884
Why Is Traffic Snooping and Inspection
Necessary?. . . . . . . . . . . . . . . . . . . . . 885