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Beginner

When I was power failure . My device 6513 will be stop the clock.

When I was power failure . My device 6513 will be stop the clock.

Please tell me why?

Following Information for device:

================================================================

------------------ show module ------------------

Mod Ports Card Type                                 Model                           Serial No.

--- ----- -------------------------------------- ------------------ -----------

  7    2  Supervisor Engine 720 (Active)         WS-SUP720-BASE      SAD111111MZ

  8    2  Supervisor Engine 720 (Hot)            WS-SUP720-BASE       SAD111111K2

  9    6  Firewall Module                              WS-SVC-FWM-1          SAD111111U6

10   24  CEF720 24 port 1000mb SFP              WS-X6724-SFP       SAL111111JM

11   24  CEF720 24 port 1000mb SFP              WS-X6724-SFP       SAL1111117P

12   24  CEF720 24 port 1000mb SFP              WS-X6724-SFP       SAL1111111E

13   48  CEF720 48 port 10/100/1000mb Ethernet  WS-X6748-GE-TX     SAL111111LC

Mod MAC addresses                       Hw    Fw           Sw           Status

--- ---------------------------------- ------ ------------ ------------ -------

  7  0011.21b5.4d20 to 0011.21b5.4d23   3.1   8.1(3)       12.2(17a)SX4 Ok

  8  0011.21a1.4230 to 0011.21a1.4233   3.1   8.1(3)       12.2(17a)SX4 Ok

  9  0016.9daa.88b4 to 0016.9daa.88bb   4.0   7.2(1)       3.1(6)       Ok

10  0012.01fc.b404 to 0012.01fc.b41b   2.1   12.2(14r)S5  12.2(17a)SX4 Ok

11  0012.01fc.b62c to 0012.01fc.b643   2.1   12.2(14r)S5  12.2(17a)SX4 Ok

12  0011.9298.7670 to 0011.9298.7687   2.1   12.2(14r)S5  12.2(17a)SX4 Ok

13  0012.4377.2870 to 0012.4377.289f   2.1   12.2(14r)S5  12.2(17a)SX4 Ok


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Hall of Fame Community Legend

When I was power failure . My device 6513 will be stop the clock

You use your 6500 as a master NTP server????  Why?

Cisco appliance doesn't have a authoritative clock.  All they have is a simple clock (like the ones powering a PC).  Either you let your 6500 go out to the internet to get an authoritative clock of you consider getting a dedicated GPS receiver that functions as an authoritative NTP source.

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10 REPLIES 10
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When I was power failure . My device 6513 will be stop the clock

Huh?  What am I looking for? 

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Beginner

When I was power failure . My device 6513 will be stop the clock

I just need to know when power failure let to my device stop the clock?

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Hall of Fame Community Legend

When I was power failure . My device 6513 will be stop the clock

Hard to tell.  Is this the only unit that had the power failure?  Any unit connected to this machine that did not had a power failure?

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Beginner

When I was power failure . My device 6513 will be stop the clock

THX for you reply.

   In my network , I used  one unit 6513 for NTP SERVER. But One Day my data center was power failure 2 hour . when the power recover. I found my network clock Delayed for 2 hours. so please let me know. When I was power failure . My device 6513 will be stop the clock

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Hall of Fame Community Legend

When I was power failure . My device 6513 will be stop the clock

You use your 6500 as a master NTP server????  Why?

Cisco appliance doesn't have a authoritative clock.  All they have is a simple clock (like the ones powering a PC).  Either you let your 6500 go out to the internet to get an authoritative clock of you consider getting a dedicated GPS receiver that functions as an authoritative NTP source.

View solution in original post

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Beginner

When I was power failure . My device 6513 will be stop the clock

Thanks You For Your Idea.

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Beginner

Re: When I was power failure . My device 6513 will be stop the c

But I has One question, Why the 6500 can't keep clock time running (like PC) when the power failure?

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Hall of Fame Community Legend

When I was power failure . My device 6513 will be stop the clock

You can "save" the calendar/time of a 6500, however, it's not "accurate".  The clock can be, for example, 10 minutes ahead.  Compare the clock now on the 6500 and the correct clock and you'll see discrepancies.

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Beginner

Re: When I was power failure . My device 6513 will be stop the c

Thank for your keep answering my question , I do know the 6500's clock is undependable now. But my customer wanted to find the exactly reason about the worry time after the power recover. As we know ,it should be two result as the scenario, one is the time go back to 1993 as default , and another is continue not matter it's some minutes ahead or behind.

The problem I meet is the time only delay the same as the power failure time lasted, e.g. the power failed for 2 hours,and when the 6500 recover, the clock displayed 2 hours delayed.

So it's so confused

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Hall of Fame Community Legend

When I was power failure . My device 6513 will be stop the clock

Check the config of your 6500 for the command "ntp update-calendar".

If this present, the command periodically update the calendar (time and date) from your source NTP.  Example, presume that the last calendar update was at 14:00, 13 October 2011.  Luck would have it that you had a power outage at 14:01, 13 October 2011 and recovered the next day at 06:00 14 October 2011.  Guess what time the clock of the 6500 would be.  It would be 14:00 13 October 2011.

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