Assign An Ip Acl To An Interface - Dell Z9000 Configuration Manual

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When Dell Networking OS routes the packets, only the L3 ACL governs them because they are not

filtered against an L2 ACL.

When Dell Networking OS switches the packets, first the L3 ACL filters them, then the L2 ACL filters

When Dell Networking OS switches the packets, the egress L3 ACL does not filter the packet.

For the following features, if you enable counters on rules that have already been configured and a new

rule is either inserted or prepended, all the existing counters are reset:

L2 ingress access list

L3 egress access list

L2 egress access list

If a rule is simply appended, existing counters are not affected.

Table 4. L2 and L3 Filtering on Switched Packets

L2 ACL Behavior

NOTE: If you configure an interface as a vlan-stack access port, only the L2 ACL filters the packets.

The L3 ACL applied to such a port does not affect traffic. That is, existing rules for other features

(such as trace-list, policy-based routing [PBR], and QoS) are applied to the permitted traffic.

For information about MAC ACLs, refer to

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.

L3 ACL Behavior

Decision on Targeted Traffic

L3 ACL denies.

L3 ACL permits.

L3 ACL denies.

L3 ACL permits.

Access Control Lists (ACLs)