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"The cable modems don't take the correct time of day"

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jmurga
"The cable modems don't take the correct time of day"

I have configured my CMTS as ToD Server, in the CMTS configuration I have clock timezone CST -6, when I run a show clock it shows me the time of my region, but the cable modems take UTC time which is 4 hours different from my region, someone knows how I can correct this.

kwesibrunee
you have to configure the

you have to configure the time-offset dhcp option, note it does not automatically adjust for DST either

i.e. in DHCPD this is US Central time
#Fall
#option time-offset -21600;
#Spring
option time-offset -18000;

jmurga
Case solved

I am very grateful for your answer, with that statement that I added in my DHCP server, I would like to mention that my time zone is GMT -6 so to get the value use this formula that I want to share in case someone needs this information.

Engineer thank you again for your support.

First Example
If a cable modem is used in a region that is GMT +11 hours, the appropriate value is calculated with these steps:

The number of seconds equivalent to 11 hours = 11 hours * (60 minutes / hour) * (60 seconds / minute) = 39600 seconds.

Second Example
If a cable modem is used in a region that is GMT - 4 hours. In this case, the negative value changes the procedure. The appropriate value is calculated with these steps:

Note: 1hr = (60 minutes / hour) * (60 seconds / minute) = 3600 sec

The number of seconds equivalent to - 4 hours = - 4 hours * (3600 second/hr) = - 14400 seconds.

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