Differentiated Services (Diffserv) - NETGEAR MS510TX User Manual

• Rule ID. 2
• Action. Permit
• Match Every. True
5. Click the Add button.
6. On the IP Binding Configuration page, assign ACL ID 1 to ports 2, 3, and 4, and assign a
sequence number of 1. (See
By default, this IP ACL is bound on the inbound direction, so it examines traffic as it
enters the switch.
7. Click the Apply button.
8. Use the IP Binding Table page to view the interfaces and IP ACL binding information. (See
View or Delete IP ACL Bindings in the IP ACL Binding Table
The IP ACL in this example matches all packets with the source IP address and subnet mask
of the Finance department's network and deny it on the Ethernet interfaces 2, 3, and 4 of the
switch. The second rule permits all non-Finance traffic on the ports. The second rule is
required because an explicit deny all rule exists as the lowest priority rule.

Differentiated Services (DiffServ)

Standard IP-based networks are designed to provide best effort data delivery service. Best
effort service implies that the network attempts to deliver the data in a timely fashion. During
times of congestion, packets might be delayed, sent sporadically, or dropped. For typical
Internet applications, such as email and file transfer, a slight degradation in service is
acceptable and in many cases unnoticeable. However, any degradation of service can
negatively affect applications with strict timing requirements, such as voice or multimedia.
Quality of Service (QoS) can provide consistent, predictable data delivery by distinguishing
between packets with strict timing requirements from those that are more tolerant of delay.
Packets with strict timing requirements are given special treatment in a QoS-capable
network. With this in mind, all elements of the network must be QoS capable. If one node
cannot meet the necessary timing requirements, this creates a deficiency in the network path
and the performance of the entire packet flow is compromised.
Two basic types of QoS are supported:
• Integrated Services. Network resources are apportioned based on request and are
reserved (resource reservation) according to network management policy (RSVP, for
example).
• Differentiated Services. Network resources are apportioned based on traffic
classification and priority, giving preferential treatment to data with strict timing
requirements.
The switch supports DiffServ.
The DiffServ feature contains a number of conceptual QoS building blocks that you can use
to construct a differentiated service network. Use these same blocks in different ways to build
other types of QoS architectures.
Smart Managed Pro Switches MS510TX and MS510TXPP
Configure IP ACL Interface Bindings
Configuration Examples
on page 288)
335
on page 286.)