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DES-3550 Fast Ethernet Layer 2 Switch
The following parameters can be set:
Parameter Description
From/To
A consecutive group of ports may be configured starting with the selected port.
Admin State
This pull-down menu allows you to enable or disable Port Security (locked MAC address
table for the selected ports).
Max. Learning
Addr. (0-10)
The number of MAC addresses that will be in the MAC address forwarding table for the
selected switch and group of ports.
Lock Address
Mode
This pull-down menu allows you to select how the MAC address table locking will be
implemented on the Switch, for the selected group of ports. The options are:
•
•
•
Permanent – The locked addresses will not age out after the aging timer
expires.
DeleteOnTimeout – The locked addresses will age out after the aging timer
expires.
DeleteOnReset – The locked addresses will not age out until the Switch has
been reset.
Click Apply to implement changes made.
QoS
The DES-3550 supports 802.1p priority queuing Quality of Service. The following section discusses the implementation of
QoS (Quality of Service) and benefits of using 802.1p priority queuing.
The Advantages of QoS
QoS is an implementation of the IEEE 802.1p standard that allows network administratiors a method of reserving
bandwidth for important functions that require a large bandwidth or have a high priority, such as VoIP (voice-over Internet
Protocol), web browsing applications, file server applications or video conferencing. Not only can a larger bandwidth be
created, but other less critical traffic can be limited, so excessive bandwidth can be saved. The Switch has separate
hardware queues on every physical port to which packets from various applications can be mapped to, and, in turn
prioritized. View the following map to see how the DES-3550 implements 802.1P priority queuing.
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