Reference Guide

250 Network Security
The following is an example of some of the CLI commands:
Time Range
Time ranges can be defined and associated with commands, such as QoS
ACL, so that it is applied only during that time range.
There are two types of time ranges:
• Absolute —This type of time range begins on a specific date or
immediately and ends on a specific date or extends infinitely. It is created
in the
Time Range pages. A recurring element can be added to it.
•
Recurring — This is a time range element that is added to an absolute
range, and begins and ends on a recurring basis. It is defined in the
Time
Range Recurrence
pages.
If a time range includes both absolute and recurring ranges, the ACL is
activated only if both absolute start time and the recurring time range have
been reached. The ACL is deactivated when either of the time ranges is
reached.
The switch supports a maximum of 10 absolute time ranges.
All time specifications are interpreted as local time (Daylight Savings Time
does not affect this).
To ensure that the time range entries take effect at the desired times, the
system time must be set. For more information on setting the system time,
see
Time Synchronization .
A possible use for this feature is to limit access of computers to the network
only during business hours, after which they are locked, and access to the rest
of the network is blocked.
Absolute Time Range
To define an absolute time range:
1
Click Switching > Network Security > Time Range to display the Time
Range: Summary
page.
The existing Time Ranges are displayed.
2 To add a new time range, click Add .
console (Config-if)# service-acl input blockcdp blockvtp