Dell PowerSwitch S4820T Configuration Guide for the S4820T System 9.112.0P1 - Page 115
Assign an IP ACL to an Interface, Applying an IP ACL
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For information about MAC ACLs, refer to Layer 2. Assign an IP ACL to an Interface To pass traffic through a configured IP ACL, 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 section describes the following: • Configure Ingress ACLs • Configure Egress ACLs For more information about Layer-3 interfaces, refer to Interfaces. Applying an IP ACL To apply an IP ACL (standard or extended) to a physical or port channel interface, use the following commands. 1 Enter the interface number. CONFIGURATION mode interface interface slot/port 2 Configure an IP address for the interface, placing it in Layer-3 mode. INTERFACE mode ip address ip-address 3 Apply an IP ACL to traffic entering or exiting an interface. INTERFACE mode ip access-group access-list-name {in} [implicit-permit] [vlan vlan-range | vrf vrf-range] [layer3] NOTE: The number of entries allowed per ACL is hardware-dependent. For detailed specification about entries allowed per ACL, refer to your line card documentation. 4 Apply rules to the new ACL. INTERFACE mode ip access-list [standard | extended] name To view which IP ACL is applied to an interface, use the show config command in INTERFACE mode, or use the show runningconfig command in EXEC mode. Example of Viewing ACLs Applied to an Interface Dell(conf-if)#show conf ! interface TenGigabitEthernet 1/1 ip address 10.2.1.100 255.255.255.0 ip access-group nimule in no shutdown Dell(conf-if)# Access Control Lists (ACLs) 115
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