DES-3550 Layer 2 Fast Ethernet Switch User’s Guide
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From: Day of Week Enter the day of the week that DST will start on.
From: Month
Enter the month DST will start on.
From: time in HH:MM Enter the time of day that DST will start on.
To: Which Day
Should be be To: Which Week. Enter the week of the month the DST will
end.
To: Day of Week Enter the day of the week that DST will end.
To: Month
Enter the month that DST will end.
To: time in HH:MM Enter the time DST will end.
DST Annual Settings
Using annual mode will enable DST seasonal time adjustment. Annual mode
requires that the DST beginning and ending date be specified concisely. For
example, specify to begin DST on April 3 and end DST on October 14.
From: Month
Enter the month DST will start on, each year.
From: Day Enter the day of the week DST will start on, each year.
From: Time in
HH:MM
Enter the time of day DST will start on, each year.
To: Month
Enter the month DST will end on, each year.
To: Day
Enter the day of the week DST will end on, each year.
To: Time in HH:MM Enter the time of day that DST will end on, each year.
Click Apply to implement changes made to the Time Zone and DST window.
Port Security
A given port’s (or a range of ports’) dynamic MAC address learning can be locked such that
the current source MAC addresses entered into the MAC address forwarding table can not be
changed once the port lock is enabled. The port can be locked by using the Admin State
<
Disabled
>
pull-down menu to Enabled, and clicking Apply.
This is a security feature that prevents unauthorized computers (with source MAC addresses
unknown to the Switch prior to locking the port or ports) from connecting to the Switch’s
locked ports and gaining access to the network.
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