[ntp:questions] Wireless Routers and NTP
Richard B. Gilbert
rgilbert88 at comcast.net
Wed Nov 28 18:08:34 UTC 2007
Rob Kimberley wrote:
> "Richard B. Gilbert" <rgilbert88 at comcast.net> wrote in message
> news:474DA691.9030407 at comcast.net...
>>Rob Kimberley wrote:
>>>Does anyone have recommendations for an ADSL Wireless Router that I can
>>>manually set the NTP Server address on? My Belkin unit comes
>>>pre-configured with external server addresses. I want to use my own one
>>>here (Meinberg LanTime), as doing some tests on NTP jitter over wireless,
>>>and want all PCs and Router to be taking time from same source.
>>Routers generally do not do NTP in any way, shape, or form! They don't
>>need to know the time! Expensive professional level (Cisco) routers can
>>act as NTP servers or clients but using them in that way is not
>>recommended. There have been a couple of moderately infamous exceptions;
>>e.g. Netgear and D-Link. (Google for Netgear and Wisconsin or D-Link and
>>If what you want is for the router's built in DHCP server to provide an
>>NTP server address it may be possible but I don't know of a router that
>>does that. The DHCP protocol does allow a query for an NTP server address
>>so it should be possible. It's possible that a router might forward such
>>a request and the reply. I don't know of one that does; I've been using
>>the same clunky old LinkSys BEFSR81 for many years now and haven't looked
>>at the consumer router market lately.
> I checked the Help File on my Belkin, which gave the following:-
> Time and Time Zone
> The Router keeps time by connecting to a Simple Network Time Protocol (SNTP)
> server. This allows the Router to synchronize the system clock to the global
> Internet. The synchronized clock in the Router is used to record the
> security log and control client filtering. Select the time zone that you
> reside in. If you reside in an area that observes Daylight Saving, then
> place a checkmark in the box next to "Enable Daylight Saving". The system
> clock may not update immediately. Allow at least 15 minutes for the router
> to contact the time servers on the Internet and get a response. You cannot
> set the clock yourself.
> The last sentence is the problem - I want to manually set.
Buy a different router! Or talk to the vendor about a custom version of
the firmware (EXPENSIVE!!!).
Why do you feel that your router needs to know the time?
More information about the questions