Dell Force10 S55T S55 Configuration Guide FTOS 8.3.5.3 - Page 113
Command example, in the INTERFACE Mode, Command Syntax, Command Mode, Purpose
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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 on page 114 • Configuring Egress ACLs on page 115 • Configuring ACLs to Loopback on page 116 For more information on Layer-3 interfaces, refer to Chapter 13, Interfaces, on page 47. 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 3 ip access-group access-list-name {in | out} [implicit-permit] [vlan vlan-range] 4 ip access-list [standard | extended] name Command Mode CONFIGURATION INTERFACE INTERFACE INTERFACE Purpose Enter the interface number. Configure an IP address for the interface, placing it in Layer-3 mode. Apply an IP ACL to traffic entering or exiting an interface. • out: configure the ACL to filter outgoing traffic. This keyword is supported only on E-Series. Note: The number of entries allowed per ACL is hardware-dependent. Refer to your line card documentation for detailed specification on entries allowed per ACL. Apply rules to the new ACL. To view which IP ACL is applied to an interface, use the show config command (Figure 232) in the INTERFACE mode or the show running-config command in the EXEC mode. Figure 7-9. Command example: show config in the INTERFACE Mode Force10(conf-if)#show conf ! interface GigabitEthernet 0/0 ip address 10.2.1.100 255.255.255.0 ip access-group nimule in no shutdown Force10(conf-if)# Use only Standard ACLs in the access-class command to filter traffic on Telnet sessions. Access Control Lists (ACL), Prefix Lists, and Route-maps | 113
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