3com 5500-ei pwr Installation Instruction
1-5
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If only an absolute time section is defined in a time range, the time range is active only
when the system time is within the defined absolute time section. If multiple absolute
time sections are defined in a time range, the time range is active only when the system
time is within one of the absolute time sections.
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If both a periodic time section and an absolute time section are defined in a time range,
the time range is active only when the periodic time range and the absolute time range
are both matched. Assume that a time range contains an absolute time section ranging
from 00:00 January 1, 2004 to 23:59 December 31, 2004, and a periodic time section
ranging from 12:00 to 14:00 on every Wednesday. This time range is active only when
the system time is within the range from 12:00 to 14:00 on every Wednesday in 2004.
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If the start time is not specified, the time section starts from 1970/1/1 00:00 and ends
on the specified end date. If the end date is not specified, the time section starts from
the specified start date to 2100/12/31 23:59.
Configuration example
# Define a periodic time range that spans from 8:00 to 18:00 on Monday through Friday.
<Sysname> system-view
[Sysname] time-range test 8:00 to 18:00 working-day
[Sysname] display time-range test
Current time is 13:27:32 Apr/16/2005 Saturday
Time-range : test ( Inactive )
08:00 to 18:00 working-day
# Define an absolute time range spans from 15:00 1/28/2006 to 15:00 1/28/2008.
<Sysname> system-view
[Sysname] time-range test from 15:00 1/28/2006 to 15:00 1/28/2008
[Sysname] display time-range test
Current time is 13:30:32 Apr/16/2005 Saturday
Time-range : test ( Inactive )
From 15:00 Jan/28/2006 to 15:00 Jan/28/2008
Configuring Basic ACL
A basic ACL filters packets based on their source IP addresses.
A basic ACL can be numbered from 2000 to 2999.
Configuration prerequisites
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To configure a time range-based basic ACL rule, you need to create the corresponding
time range first. For information about time range configuration, refer to
.
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The source IP addresses based on which the ACL filters packets are determined.