Chapter 5 Advanced Configuration
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8-Port 10/100 Ethernet Switch with Webview
Number of Violations Indicates the number of packets
that arrived on the interface in single-host mode, from
a host whose MAC address is not the supplicant MAC
address.
Security > Storm Control
Port Displays the port number for which storm control is
enabled.
Security > Storm Control
Broadcast Control Indicates whether broadcast packet
types are forwarded on the specific interface.
Mode Specifies the Broadcast mode currently enabled
on the device. The possible field values are:
Unknown Unic ast, Multicast & Broadcast •Counts
Unicast, Multicast, and Broadcast traffic.
Multicast & Broadcast •Counts Broadcast and
Multicast traffic together.
Broadcast Only •Counts only Broadcast traffic.
Rate Threshold The maximum rate (packets per second)
at which unknown packets are forwarded. The default
value is 3500. The range is 70 -100000.
QoS
Network traffic is usually unpredictable, and the only
basic assurance that can be offered is best effort traffic
delivery. To overcome this challenge, Quality of Service
(QoS) is applied throughout the network. This ensures that
network traffic is prioritized according to specified criteria,
and that specific traffic receives preferential treatment.
QoS in the network optimizes network performance and
entails two basic facilities:
Classifying incoming traffic into handling classes, based
on an attribute, including:
The ingress interface •
Packet content •
A combination of these attributes •
Providing various mechanisms for determining the
allocation of net work resources to different handling
classes, including:
The assignment of network traffic to a particular •
hardware queue
The assignment of internal resources •
Traffic shaping •
The terms Class of Ser vice (CoS) and QoS are used in the
following context:
CoS provides varying Layer 2 traffic services. CoS refers to
classification of traffic to traffic-classes, which are handled
as an aggregate whole, with no per-flow settings. CoS is
usually related to the 802.1p service that classifies flows
according to their Layer 2 priority, as set in the VLAN
header.
QoS refers to Layer 2 traffic and above. QoS handles per-
flow settings, even within a single traffic class.
QoS > CoS Settings
QOS > CoS Settings
The CoS Settings screen contains fields for enabling or
disabling CoS. In addition, the Trust mode can be selected.
The Trust mode relies on predefined fields within the
packet to determine the egress queue settings.
The CoS Settings screen has two areas, CoS Settings and
CoS to Queue.
CoS Mode Indicates if QoS is enabled on the inter face.
The possible values are:
Disable •Disables QoS on the interface.