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6
Managing your Local Area Network
126
Nokia IP45 Security Platform User’s Guide v4.0
To set the link speed for the ports by using GUI
1.
Choose Network from the main menu and select Ports.
The Ports page opens.
2.
Click Edit at the corresponding port to define the port link speed.
The Port Setup page opens.
3.
Select the link speed from the Link Configuration drop-down list for each interface.The
options available are:
±
Automatic Detection
±
10Mbps/Half Duplex
±
10Mbps/Full Duplex
±
100Mbps/Half Duplex
±
100Mbps/full Duplex
4.
Click Apply.
Viewing Ports Status
The following section provides information about how to view the ports status of your Nokia
IP45.
To view ports status
1.
Choose Network from the main menu.
The Network page opens.
2.
Click Ports.
The Ports page opens with information about the ports and their link status.
Page 127 / 342
Nokia IP45 Security Platform User’s Guide v4.0
127
7
Quality of Service
This chapter provides information about Quality of Service (QoS), advantages of enabling QoS
classes and how to configure QoS parameters. This chapter includes the following sections:
±
About QoS
±
Using Traffic Shaper
±
QoS Classes
±
Enabling QoS Classes
±
Adding QoS Classes
±
Editing and Deleting QoS Classes
About QoS
A communications network plays a prominent role in the success of an organization. These
networks transport a multitude of applications and data including high quality video and real
time voice. Bandwidth-intensive applications stretch network capabilities and resources,
complement, add value and enhance every business process. Networks must provide secure,
predictable, measurable and guaranteed services.
Quality of Service can be achieved by managing delay, delay variation, bandwidth, and packet
loss parameters on a network. QoS provides successful end-to-end solutions by using a set of
techniques that manage the network resources.
The following sections discuss QoS techniques, and how to configure them.
Using Traffic Shaper
Traffic shaper is a bandwidth management solution that ensures the precedence of important
traffic over less important traffic. This allows you to continue your business with less disruption
even during network congestion. Traffic shaper uses stateful inspection technology to access and
analyze data derived from all communication layers. This data is used to classify traffic in eight
user-defined quality of service classes. Traffic shaper divides the available bandwidth among the
classes according to the weight. Considering the importance of the traffic, you may assign
weight to each class.
You can set bandwidth policies and control the flow of communication by using traffic shaper.
Page 128 / 342
7
Quality of Service
128
Nokia IP45 Security Platform User’s Guide v4.0
For example:
Web traffic is deemed three times important as FTP traffic and the weight assigned is 30.
FTP traffic is assigned a weight of 10.
When the network is congested, traffic shaper maintains the ratio of bandwidth allocation among
web traffic and FTP traffic as 3:1.
Traffic shaper divides the remaining bandwidth among the other classes based on the weight
assigned to them. If only Web traffic and FTP are active and competing in the entire network,
then the remaining available bandwidth allocated will be 75% and 25% respectively. If Web
traffic closes, FTP traffic receives 100% of the bandwidth. Traffic shaper supports Differentiated
Services (DiffServ) packet marking. Packets are marked according to the QoS class they belong
to. These packets are then granted priority on the public network according to their class.
Note
To enable traffic shaper, see
“Configuring an Internet Connection”
on page 73.
IP45 v4.0 traffic shaper supports shaping of inbound traffic when multiple internal networks are
defined. The earlier releases supported only for a single network.
QoS Classes
You can define different QoS classes based on your requirement. You can assign a bandwidth
limit to each class. This limit acts as the maximum bandwidth limit for all the connections under
this class. Once a class reaches this set limit, no connections of this class will be allocated any
bandwidth, even if unused bandwidth is available. You can also set delay sensitivity, which
indicates whether connections belonging to one class should be allowed to precede the
connections belonging to other classes.
Nokia IP45 supports four default QoS classes and support a maximum of eight user-defined QoS
classes.
Note
To assign traffic to the QoS classes, define an Allow or Allow and Forward firewall rule.
Page 129 / 342
QoS Classes
Nokia IP45 Security Platform User’s Guide v4.0
129
Default QoS Classes
Nokia IP45 supports the following four predefined (default) QoS classes.
Enabling QoS Classes
By default the QoS classes are disabled in your IP45 device. You must enable the QoS classes
before adding them. You can do this by enabling the traffic shaper while configuring your
Internet connections. For more information about enabling the traffic shaper, see
“Configuring
an Internet Connection”
on page 73.
Table 22
Default QoS Classes
Class
Weight
Delay
Sensitivity
Suitable for
Default
10
Medium
(normal traffic)
By default, all traffic is
assigned to this class.
Urgent
15
High
(interactive
traffic)
Traffic that is highly
sensitive to delay.
For example: IP
telephony,
videoconferencing, and
interactive protocols
such as Telnet that
require quick user
response.
Important
20
Medium
(normal traffic)
Normal traffic
Low Priority
5
Low (bulk
traffic)
Traffic that is not
sensitive to long delays.
for example: SMTP
traffic.
Page 130 / 342
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Quality of Service
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Nokia IP45 Security Platform User’s Guide v4.0
Adding QoS Classes
You can define QoS classes to fit your administrative needs. To add QoS classes
1.
Choose Network from the main menu, and click Traffic Shaper.
The Quality of Service Classes page opens.
2.
Click Add at the bottom of the page.
Quality of Services Parameters window opens.
3.
Enter the value for Weight.
4.
Select a value from the Delay Sensitivity drop-down list.
5.
Click Next.

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