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About the Nortel Ethernet Routing Switch 4500 Series
If you power down down the switch within 60 seconds you can lose the
changed configuration parameters.
Policy-enabled networking
With the Nortel Ethernet Routing Switch 4500 Series, you can implement
classes of services and assign priority levels to different types of traffic. You
can also configure policies to monitor the characteristics of traffic.
For example, in the Nortel Ethernet Routing Switch 4500 Series, you can
determine the sources, destinations, and protocols used by the traffic. You
can also perform a controlling action on the traffic when certain user-defined
characteristics match.
The Nortel Ethernet Routing Switch 4500 Series supports Differentiated
Services (DiffServ). DiffServ is a network architecture through which service
providers and enterprise network environments can offer various levels of
services for different types of data traffic.
You can use DiffServ Quality of Service (QoS) to designate a specific level
of performance on a packet-by-packet basis. If you have applications that
require high performance and reliable service, such as voice and video
over IP, you can use DiffServ to give preferential treatment to this data over
other traffic.
Power over Ethernet
The Nortel Ethernet Routing Switch 4500 Series 4548-GT-PWR and the
4550T-PWR (PoE switches) provide IEEE 802.3af-compliant power or PoE
on all 10/100/1000 RJ-45 ports.
PoE refers to the ability of the switch to power network devices over an
Ethernet cable. Some of these devices include IP Phones, Wireless LAN
Access Points, security cameras, and access control points.
The PoE switches automatically detect the network device requirements
and dynamically supply the required DC voltage at a set current to each
appliance.
To configure and manage the PoE features, you must use either the CLI, the
Web-based management system, or the Java Device Manager.
Note: You must use a four-pair Category 5 UTP cable for PoE. A
standard two-pair UTP Cable does not support PoE.
Virtual Local Area Networks
Virtual Local Area Network (VLAN) provides a mechanism to fine-tune
broadcast domains.
Nortel Ethernet Routing Switch 4500 Series
Overview — System Configuration
NN47205-500
02.01
Standard
5.0
23 February 2007
Copyright © 2007, Nortel Networks
Nortel Networks Confidential
.
