H3C Time range is a powerful networking device that allows you to configure time-based services on your network. With H3C Time range, you can implement a variety of time-based policies, such as:
- Time-based ACLs: You can create ACLs that only take effect during specific times of the day or week. This can be useful for controlling access to your network during business hours or for blocking certain types of traffic at night.
- Time-based routing: You can create routing policies that only take effect during specific times of the day or week. This can be useful for load balancing traffic between different links or for routing traffic to different destinations at different times of the day.
H3C Time range is a powerful networking device that allows you to configure time-based services on your network. With H3C Time range, you can implement a variety of time-based policies, such as:
- Time-based ACLs: You can create ACLs that only take effect during specific times of the day or week. This can be useful for controlling access to your network during business hours or for blocking certain types of traffic at night.
- Time-based routing: You can create routing policies that only take effect during specific times of the day or week. This can be useful for load balancing traffic between different links or for routing traffic to different destinations at different times of the day.
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Contents
Configuring time ranges ················································································· 1
About time ranges ·············································································································································· 1
Restrictions and guidelines: Time range configuration ······················································································ 1
Procedure··························································································································································· 1
Display and maintenance commands for time ranges ······················································································· 1
Time range configuration examples ··················································································································· 2
Example: Configuring a time range ············································································································ 2
1
Configuring time ranges
About time ranges
You can implement a service based on the time of the day by applying a time range to it. A
time-based service takes effect only in time periods specified by the time range. For example, you
can implement time-based ACL rules by applying a time range to them.
The following basic types of time ranges are available:
•
Periodic time range—Recurs periodically on a day or days of the week.
•
Absolute time range—Represents only a period of time and does not recur.
The active period of a time range is calculated as follows:
1. Combining all periodic statements.
2. Combining all absolute statements.
3. Taking the intersection of the two statement sets as the active period of the time range.
Restrictions and guidelines: Time range
configuration
When you configure the ACL hardware mode, follow these restrictions and guidelines:
•
If a time range does not exist, the service based on the time range does not take effect.
•
You can create a maximum of 1024 time ranges, each with a maximum of 32 periodic
statements and 12 absolute statements.
Procedure
1. Enter system view.
system-view
2. Create or edit a time range.
time-range time-range-name { start-time to end-time days [ from time1
date1 ] [ to time2 date2 ] | from time1 date1 [ to time2 date2 ] | to time2
date2 }
If an existing time range name is provided, this command adds a statement to the time range.
Display and maintenance commands for time
ranges
Execute the display command in any view.
Task
Command
Display time range configuration and status.
display
time-range
{
time-range-name
|
all
}
2
Time range configuration examples
Example: Configuring a time range
Network configuration
As shown in Figure 1, configure an ACL on the device to allow Host A to access the server only
during 8:00 and 18:00 on working days from June 2015 to the end of the year.
Figure 1 Network diagram
Procedure
# Create a periodic time range during 8:00 and 18:00 on working days from June 2015 to the end of
the year.
<Device> system-view
[Device] time-range work 8:0 to 18:0 working-day from 0:0 6/1/2015 to 24:00 12/31/2015
# Create an IPv4 basic ACL numbered 2001, and configure a rule in the ACL to permit packets only
from 192.168.1.2/32 during the time range work.
[Device] acl basic 2001
[Device-acl-ipv4-basic-2001] rule permit source 192.168.1.2 0 time-range work
[Device-acl-ipv4-basic-2001] rule deny source any time-range work
[Device-acl-ipv4-basic-2001] quit
# Apply IPv4 basic ACL 2001 to filter outgoing packets on Twenty-FiveGigE 1/0/2.
[Device] interface twenty-fivegige 1/0/2
[Device-Twenty-FiveGigE1/0/2] packet-filter 2001 outbound
[Device-Twenty-FiveGigE1/0/2] quit
Verifying the configuration
# Verify that the time range work is active on the device.
[Device] display time-range all
Current time is 13:58:35 6/19/2015 Friday
Time-range : work (Active)
08:00 to 18:00 working-day
from 00:00 6/1/2015 to 00:00 1/1/2016
Host A
192.168.1.2/24
Device
Host B
192.168.1.3/24
WGE1/0/2WGE1/0/1
Server
192.168.0.100/24
-
1
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2
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3
H3C Time range is a powerful networking device that allows you to configure time-based services on your network. With H3C Time range, you can implement a variety of time-based policies, such as:
- Time-based ACLs: You can create ACLs that only take effect during specific times of the day or week. This can be useful for controlling access to your network during business hours or for blocking certain types of traffic at night.
- Time-based routing: You can create routing policies that only take effect during specific times of the day or week. This can be useful for load balancing traffic between different links or for routing traffic to different destinations at different times of the day.
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