DELL N3000 User Manual

Switch Feature Overview

Access Control Lists (ACLs) ensure that only authorized users have access to 

specific resources while blocking off any unwarranted attempts to reach 

network resources. ACLs are used to provide traffic flow control, restrict 

contents of routing updates, decide which types of traffic are forwarded or 

blocked, and above all provide security for the network. The switch supports 

the following ACL types:

• IPv4  ACLs
• IPv6  ACLs
• MAC  ACLs

For all ACL types, you can apply the ACL rule when the packet enters or exits 

the physical port, LAG, or VLAN interface.
ACLs can be used to implement policy-based routing (PBR) to implement 

packet routing according to specific organizational policies.
For information about configuring ACLs and PBR, see "Configuring Access 

With the Time-based ACL feature, you can define when an ACL is in effect 

and the amount of time it is in effect. 
For information about configuring time-based ACLs, see "Configuring Access 

IP source guard (IPSG) is a security feature that filters IP packets based on 

the source ID. The source ID may either be source IP address or a source IP 

address source MAC address pair as found in the local DHCP snooping 

database. IPSG depends on DHCP Snooping to associate IP address with 

MAC addresses.
For information about configuring IPSG, see "Snooping and Inspecting 

Traffic" on page 879.