Administrator Guide

Layer 2 Switching Commands 678
ACLs can be configured to apply to a VLAN instead of an interface. Traffic
tagged with a VLAN ID (either receive-tagged or tagged by ingress process
such as PVID) is evaluated for a match regardless of the interface on which it
is received.
Layer 2 ACLs
The Layer 2 ACL feature provides access list capability by allowing
classification on the Layer 2 header of an Ethernet frame, including the
802.1Q VLAN tag(s). In addition, the rule action set is enhanced to designate
which (egress) CoS queue should handle the traffic, and whether the traffic
flow is to be redirected to a specific outgoing interface.
MAC access lists are identified by a user-specified name instead of a number.
Layer 3/4 IPv4 ACLs
The Layer 3/4 ACL feature supports IP access lists, both standard and
extended. These lists check the Layer 3 portion of a packet, looking
specifically at information contained in the IP header and, in certain cases,
the TCP or UDP header. An Ethertype of 0x0800 is assumed in the case of IP
access lists. Permit and deny actions are supported for each ACL rule.
Standard layer 3/4 ACLs can be classified based on the source IP address and
netmask or other extended classification criteria.
Class of Service (CoS)
The Dell Networking CoS Queueing feature allows the user to directly
configure device queueing and, therefore, provide the desired QoS behavior
without the complexities of DiffServ. The CoS feature allows the user to
determine the following queue behavior:
•Queue Mapping
– Trusted Port Queue Mapping
– Untrusted Port Default Priority
• Queue Configuration
This enables Dell Networking switches to support a wide variety of delay
sensitive video and audio multicast applications.
2CSNXXX_SWUM204.book Page 678 Monday, January 25, 2016 1:25 PM