1.6.3 If a Local Time Zone is used, Configure Daylight Savings

Information

If local time zones are configured on network infrastructure, it is important to also configure the time 'shift' that occurs as a result of Daylight Savings Time.

Rationale:

Impact:

If local time zones are configured on network infrastructure, it is usually to simplify relating reported end-user issues back to local time entries in the logs. So if local time zones are configured and used in this manner, it becomes important to also configure the time 'shift' that occurs as a result of Daylight Savings Time (or 'summer-time' on the Cisco CLI).

Solution

In most cases, just the name of the DST timezone name is sufficient. NX-OS assumes 1 hour offset, using the United States dates for DST.

switch(config)# clock summer-time <DST Timezone Name>

for example:

switch(config)# clock summer-time EDT

If a full definition of the change is needed, it can certainly be set:

switch(config)# clock summer-time <DST Timezone Name> <day1> <month1> <time1> <day2> <month2> <time2> <offset in minutes>

where:

day1, month1, time1 define the start of the DST period

day2, month2, time2 define the end of the DST period

Default Value:

By default, summer-time (Daylight Savings Time) is not configured. If the summer-time start and stop dates are not specified, then the US standard dates are used: start = 2 Sun Mar 02:00 stop = 1 Sun Nov 02:00 60

See Also

https://workbench.cisecurity.org/files/3102

Item Details

Category: AUDIT AND ACCOUNTABILITY

References: 800-53|AU-8, CSCv7|6.1

Plugin: Cisco

Control ID: 843551dcc9740f3c280eb9eefb75610af1eb786fd882013f6168cbd41cff9593