Chapter
Advanced Configuration
22
24-Port 10/100 + 2-Port 10/100/1000 Gigabit Advanced Smart Switch with 2 Combo SFPs
is unknown to the system), the protection mechanism is
invoked, and can provide various options.
Security > Port Security
Port
Selects a port from the pull-down window to assign
lock mode.
Lock Mode
Selects the lock mode to lock the specified
port.
None
Disables lock mode.
Static Lock
Allows you to manually configure a switch
port with one or more device MAC addresses that are
authorized to access the network through that port.
All the unauthorized MAC address will not be able to
access network through that port.
Limited Dynamic Lock
Allows the Switch to
dynamically learn the MAC addresses for a selected
port. When the port has reached the maximum entries
of MAC addresses, the selected port will stop learning.
The MAC addresses already in the address table will be
retained and will not be age out.
Max Entries
Specifies the number of MAC addresses
that can be learned on the port. The Max Entries field is
enabled only if Limited Dynamic Lock is selected. The Max
Entry is 24.
Security MAC Address
Item
Displays the index of the security MAC address.
Source MAC
Displays the security MAC address.
Port
Displays the port associated with the security MAC
address.
Delete
Click
Delete
to remove the security MAC address.
Add Source MAC Address
Click
Add Source MAC
to add
static MAC address to the selected port.
Port Number
Indicates the port number associated with
the Static Security MAC Address that you would like to
add.
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Static MAC Address
Enters the Static Security MAC
Address that you would like to add.
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 network 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 Service (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
Class of Service (CoS) allows you to specify which data
packets have greater precedence when traffic is buffered
in the Switch due to congestion. The Switch supports CoS
with four priority queues for each port. Data packets in
a port’s high-priority queue will be transmitted before
those in the lower-priority queues. You can set the default
priority for each interface, and configure the mapping of
frame priority tags to the Switch’s priority queues.
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