Create Quality Of Service (Qos) Profiles - NETGEAR SRX5308 Reference Manual

Create Quality of Service (QoS) Profiles

A Quality of Service (QoS) profile defines the relative priority of an IP packet when multiple
connections are scheduled for simultaneous transmission on the VPN firewall. A QoS profile
becomes active only when it is associated with a nonblocking inbound or outbound firewall
rule and traffic matching the firewall rule flows through the router.
After you have created a QoS profile, you can assign the QoS profile to firewall rules on the
following screens:
• Add LAN WAN Outbound Services screen (see
• Add LAN WAN Inbound Services screen (see
• Add DMZ WAN Outbound Services screen (see
• Add DMZ WAN Inbound Services screen (see
Priorities are defined by the Type of Service (ToS) in the Internet Protocol Suite standards,
RFC 1349.
There is no default QoS profile on the VPN firewall. Following are examples of QoS profiles
that you could create:
• Normal service profile. Used when no special priority is given to the traffic. You would
typically mark the IP packets for services with this priority with a ToS value of 0.
• Minimize-cost profile. Used when data needs to be transferred over a link that has a lower
cost. You would typically mark the IP packets for services with this priority with a ToS
value of 1.
• Maximize-reliability profile. Used when data needs to travel to the destination over a
reliable link and with little or no retransmission. You would typically mark the IP packets
for services with this priority with a ToS value of 2.
• Maximize-throughput profile. Used when the volume of data transferred during an interval
is important even if the latency over the link is high. You would typically mark the IP
packets for services with this priority with a ToS value of 3 or 4.
• Minimize-delay profile. Used when the time required (latency) for the packet to reach the
destination needs to be low. You would typically mark the IP packets for services with this
priority with a ToS value of 7.
Note: This document assumes that you are familiar with QoS concepts
such QoS priority queues, IP precedence, DHCP, and their values.

To create a QoS profile:
1. Select Security > Services > QoS Profiles. The QoS Profiles screen displays. (The
following figure shows some profiles in the List of QoS Profiles table as an example.)
ProSafe Gigabit Quad WAN SSL VPN Firewall SRX5308
Firewall Protection
Figure 43 on page 94).
Figure 44 on page 95).
Figure 46 on page 97).
Figure 47 on page 98).
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