Dell Networking N4000 Series User Manual

86 Switch Feature Overview
For information about configuring DHCPv6 settings, see "Configuring
DHCPv6 Server and Relay Settings" on page 1265.
Quality of Service (QoS) Features
Differentiated Services (DiffServ)
The QoS Differentiated Services (DiffServ) feature allows traffic to be
classified into streams and given certain QoS treatment in accordance with
defined per-hop behaviors. Dell Networking series switches support both IPv4
and IPv6 packet classification.
For information about configuring DiffServ, see "Configuring Differentiated
Services" on page 1285.
Class Of Service (CoS)
The Class Of Service (CoS) queueing feature lets you directly configure
certain aspects of switch queuing. This provides the desired QoS behavior for
different types of network traffic when the complexities of DiffServ are not
required. CoS queue characteristics, such as minimum guaranteed
bandwidth and transmission rate shaping, are configurable at the queue (or
port) level.
For information about configuring CoS, see "Configuring Class-of-Service" on
page 1313.
Auto Voice over IP (VoIP)
This feature provides ease of use for the user in setting up VoIP for IP phones
on a switch. This is accomplished by enabling a VoIP profile that a user can
select on a per port basis.
For information about configuring Auto VoIP, see "Configuring Auto VoIP" on
page 1331.
NOTE: Some features that can affect QoS, such as ACLs and Voice VLAN, are
described in other sections within this chapter.

Dell Networking N4000 Series Specifications

General

Layer	Layer 3
Switching Capacity	Up to 1.28 Tbps
Operating Temperature	0°C to 45°C (32°F to 113°F)
Storage Temperature	-40°C to 70°C (-40°F to 158°F)
Series	N4000 Series
Stacking	Up to 12 units
Power Supply	Dual, hot-swappable
Management	Web, CLI, SNMP
Humidity	10% to 90% (non-condensing)