IBM N Series Installation Manual page 22

Quality of Service
(QoS) features
16
Switching feature
Flow-based mirroring
Storm control
QoS features affect the way traffic is handled as it enters and exits the switch.
The following table describes the QoS features:
QoS Feature
Class of Service
(CoS) queuing
IP Access Control
Lists (ACLs)
MAC ACLs
Description
Copy certain types of traffic to a single destination
port. You can configure the switch to mirror flows
based on Layer 2, Layer 3, and Layer 4 information.
Protect the network by detecting a traffic storm
(broadcast, multicast, or unknown unicast traffic
received at a very high rate) and preventing these
packets from flooding other parts of the network.
Description
Directly configure certain aspects of the hardware traffic
queueing to affect QoS behavior for different types of
network traffic. CoS queue characteristics such as
minimum guaranteed bandwidth and transmission rate
shaping are configurable at the queue (or port) level.
Create one or more rules that cause traffic to be
forwarded, dropped, or assigned to a specific queue
based on the match criteria within the IP packet.
Create one or more rules that cause traffic to be
forwarded, dropped, or assigned to a specific queue
based on the match criteria within the Ethernet frame.
Software features