Applying An Ip Acl; Counting Acl Hits - Dell Force10 Z9000 Configuration Manual

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]
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
running-config 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)#
To filter traffic on Telnet sessions, use only standard ACLs in the access-class command.

Counting ACL Hits

You can view the number of packets matching the ACL by using the count option when creating ACL entries.
1. Create an ACL that uses rules with the count option. Refer to
2. Apply the ACL as an inbound or outbound ACL on an interface.
3.
show ip accounting access-list
94
Access Control Lists (ACLs)
Configure a Standard IP ACL Filter.