Dell Force10 S4820T S4820T Configuration Guide - Page 123

Note: If an interface is configured as a vlan-stack access port, the packets are filtered by an L2 ACL only. The L3 ACL applied to such a port does not affect traffic. That is, existing rules for other features (such as trace-list, PBR, and QoS) are applied accordingly to the permitted traffic. For information on MAC ACLs, refer to Layer 2. Assign an IP ACL to an Interface c Ingress IP ACLs are supported on platforms: e s Ingress and Egress IP ACLs are supported on platform: and To pass traffic through a configured IP ACL, you must assign that ACL to a physical interface, a port channel interface, or a VLAN. The IP ACL is applied to all traffic entering a physical or port channel interface and the traffic is either forwarded or dropped depending on the criteria and actions specified in the ACL. The same ACL may be applied to different interfaces and that changes its functionality. For example, you can take ACL "ABCD", and apply it using the in keyword and it becomes an ingress access list. If you apply the same ACL using the out keyword, it becomes an egress access list. If you apply the same ACL to the loopback interface, it becomes a loopback access list. This chapter covers the following topics: • Configuring Ingress ACLs • Configuring Egress ACLs • Configuring ACLs to Loopback For more information on Layer-3 interfaces, refer to Interfaces. To apply an IP ACL (standard or extended) to a physical or port channel interface, use these commands in the following sequence in the INTERFACE mode: Step Command Syntax 1 interface interface slot/port 2 ip address ip-address Command Mode CONFIGURATION INTERFACE Purpose Enter the interface number. Configure an IP address for the interface, placing it in Layer-3 mode. Access Control Lists (ACLs) | 123