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Chapter 6
Advanced Configuration
17
Wireless-G Business Ethernet Bridge
Switch > QoS
Switch > QoS
The Quality of Service (QoS) configuration in this switch
has two parts: QoS Mode and Rate Limiting. QoS Mode
is used to classify and prioritize packets. Rate Limiting
is used to limit the amount of bandwidth used by data
passing in or out of the switch port.
QoS Port Setting Select the QoS settings for ports 1-5
and the wireless port, then click Apply Port Setting.
QoS Mode • Select the desired QoS mode: Force
Priority (default), Trust 802.1p, Trust IP TOS, or Trust
IP DSCP.
Default Priority (on Ingress) • Select Critical (default),
Low, Medium, or High. This is only used if the QoS
Mode field is set to Force Priority.
Ingress Rate • Select the maximum rate allowed for
the port. For ports 1-5, the range is 128 kbps to 64
Mbps and for the wireless port the range is 128 kbps
to 16 Mbps. The default is No Limit.
Egress Rate • Select the maximum rate allowed for
the port. For ports 1-5, the range is 128 kbps to 64
Mbps and for the wireless port the range is 128 kbps
to 16 Mbps. The default is No Limit.
Switch > Spanning Tree
This screen allows you to configure the Spanning Tree
Protocol (STP) settings for the switch. STP can be used to
detect and disable network loops, and to provide backup
links between switches, bridges or routers. This allows the
switch to interact with other bridging devices (that is, an
STP-compliant switch, bridge or router) in your network
to ensure that only one route exists between any two
stations on the network, and provide backup links which
automatically take over when a primary link goes down.
STP is enabled by default.
Switch > Spanning Tree
STP To enable STP, keep the default setting, Enabled. To
disable STP, select Disabled.
Max Age The maximum time in seconds that a device
can wait without receiving a configuration message
before attempting to reconfigure. The range is from 0.6 to
4 seconds. The default value is 4 seconds.
Hello Time The interval in seconds at which the root
device transmits a configuration message. The range is
from 0.1 to 4 seconds. The default value is 1 second.
Forward Delay The maximum time in seconds that this
device will wait before changing states, such as from
discarding to learning to forwarding. The range is 1 to 5
seconds. The default is 3 seconds.
STP Table Select the settings for the Spanning Tree table,
then click Apply Port Setting.
Priority • The priority of this port. The smaller the
priority value, the higher the priority. If two ports form
a loop, the port with higher priority will change to
block state, thus breaking the loop.
Cost • The path cost to forward packets from this port.
It is usually inversely proportional to the port’s speed.
State • The Spanning Tree protocol: state: Blocking,
Learning, or Forwarding.
To apply the settings, click Apply Port Setting. To cancel,
click Cancel. To see the latest information, click Refresh.