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Page 191 / 211 Scroll up to view Page 186 - 190
FiOS Router User Manual
191
© 2010 Verizon. All Rights Reserved.
A.1a
Setting Priority Rules
To set priority rules:
Click
1.
Quality of Service
in the Advanced screen. The “Traffic Priority” screen
appears. This screen is divided into two identical sections, one for “QoS input
rules” and the other for “QoS output rules,” which are for prioritizing the
inbound and outbound traffic, respectively. Each section lists all the devices
on which rules can be set. Rules can be set on all devices at once by clicking
Add
in the “All Devices” row.
Page 192 / 211
Configuring Quality of Service
A.1
Traffic Priority
A
192
© 2010 Verizon. All Rights Reserved.
After choosing the traffic direction and the device on which to set the rule,
2.
click
Add
in the appropriate row. The “Add Traffic Priority Rule”
screen appears.
Set the following parameters:
Source Address
The source address of the packets sent to or received from the network object.
To add an address:
Select “
1.
User Defined” from the drop-down list. The screen refreshes and an
“Add” link appears.
Click
2.
Add
, then add a new network object (see the “Advanced Settings”
chapter to learn how to add a network object). Clicking Add is the same as
clicking New Entry in the Network Objects screen.
Destination Address
The destination address of the packets sent to or received from the network
object. This address can be configured in the same manner as the source address.
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FiOS Router User Manual
193
© 2010 Verizon. All Rights Reserved.
Protocol
Choose a specific traffic protocol from the drop-down list, or add a new one. To
add a new traffic protocol:
Select “
1.
User Defined” from the drop-down list. The screen refreshes and an
“Add” link appears.
Click
2.
Add
, and add a new protocol (see the “Advanced Settings” chapter to
learn how to add a protocol). Note that clicking Add is equivalent to clicking
New Entry in the Protocols screen.
Set Priority
Activate this check box to add a priority to the rule. The screen will refresh,
allowing a selection between one of eight priority levels, zero being the lowest
and seven the highest (each priority level is mapped to low/medium/high
priority). This sets the priority of a packet on the connection matching the rule,
while routing the packet.
Set DSCP
Activate this check box to mark a DSCP value on packets matching a connection
that matches this rule. The screen will refresh, allowing the user to enter the Hex
value of the DSCP.
Log Packets Matched by This Rule
Check this check box to log the first packet from a connection matched by
this rule.
Schedule
By default, the rule will always be active. However, scheduler rules can be
configured to define time segments during which the rule may be active.
Page 194 / 211
Configuring Quality of Service
A.2
Traffic Shaping
A
194
© 2010 Verizon. All Rights Reserved.
A.2
Traffic Shaping
Traffic Shaping is the solution for managing and avoiding congestion where
the network meets limited broadband bandwidth. Typical networks use a 100
Mbps Ethernet LAN with a 100 Mbps WAN interface router, which is where most
bottlenecks occur.
A traffic shaper is essentially a regulated queue that accepts uneven and/or
bursty flows of packets and transmits them in a steady, predictable stream so
that the network is not overwhelmed with traffic. While traffic priority allows
basic prioritization of packets, traffic shaping provides more sophisticated
definitions, such as:
Bandwidth limit for each device
•
Bandwidth limit for classes of rules
•
Prioritization policy
•
TCP serialization on a device
•
Additionally, QoS traffic shaping rules can be defined for a default device. These
rules will be used on a device that has no definitions of its own. This enables the
definition of QoS rules on the default WAN, for example, and their maintenance
even if the PPP or bridge device over the WAN is removed.
A.2a Device Traffic Shaping
This section describes the different Traffic Shaping screens and terms, and
presents the feature’s configuration logic.
Click
1.
Quality of Service
in the Advanced screen, then click
Traffic
Shaping
.
The following screen appears.
Page 195 / 211
FiOS Router User Manual
195
© 2010 Verizon. All Rights Reserved.
Click
2.
Add
. The “Add Device Traffic Shaping” screen appears.
Select the device for which the traffic will be shaped. The drop-down list
3.
includes all the FiOS Router’s devices, as well as the option to select all
devices in each category (e.g., “All LAN Devices,” “All WAN Devices”). In this
example, select the default WAN device option.
Click
4.
Apply
. The “Edit Device Traffic Shaping” screen appears.
Configure the following parameters:
Tx Bandwidth
Tx bandwidth limits the FiOS Router’s bandwidth transmission rate. The
purpose is to limit the bandwidth of the WAN device to that of the weakest
outbound link.. This forces the FiOS Router to be the network bottleneck, where
sophisticated QoS prioritization can be performed.

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