NTP External Clock source using Trimble Acutime2000 and 7206 router

[srgraham]

I seem to be having problems get my new Trimble Acutime 2000 GPS to connect correctly to my 7206 router. THe AUX port is no longer a 25pin D-Shell connector but a 8 pin UTP connection. I can't seem to get the 9pin D-Shell connector from the Acutime box to connect to the 7206 correctly. Can't seem to get the pinouts correct. Does anyone have knowledge on this matter. Thanks

Sean

[albert.remo]

Hi! This would probably not work since the AUX port of the 7200 is an asynchronous port used for access to and from the router either locally or via dial up by connecting a modem. You don't install clocking through this port. Basically, 7200 routers utilizes internal clocking or clocking provided by the transmission lines. I believe that there are no external clock interface for a 7200 router. Check this website: http://www.cisco.com/en/US/products/hw/routers/ps341/products_tech_note09186a0080094ea3.shtml#intro

hope this helps! thanks - albert

[srgraham]

Here is some info stating that there was a driver created for the 7206 routers to utilize a external clokc on the UAX port that you should take a look at. I've done everything in the article but I believe my issue is with the pinout configuration on the 7206. The older 7206 models VXR300 have a 25 Pin D-shell connector that should be using pins 2 TxD, 3 Rxd, and 5 GnD to RS232 communications, however the NPE1 7206 have an eight pin UTP jack and I'm not sure if the pinout is the same as a 25 pin D-Shell.

Article:

Trimble Palisade NTP Synchronization Driver for the Cisco 7200 Series

Platforms: Cisco 7200 series routers

Cisco IOS Release 12.1(1) and Cisco IOS Release 12.1(1)T introduce a driver that supports the use of the Trimble Palisade NTP Synchronization Kit with the Cisco 7200 series routers. The Trimble GPS product can provide a signal that can by used for NTP time-synchronization of a network. The Trimble Palisade NTP Synchronization Kit can be connected to the auxiliary port of a Cisco 7200 router. The refclock (reference clock) driver provided by this feature provides the ability to receive an RTS timestamp signal on the auxiliary port of the router. The addition of a driver for the Trimble Palisade product in no way implies a recommendation or warranty by Cisco for the Trimble product. To enable the driver, use the ntp refclock trimble pps none command in line configuration mode for the aux 0 line.

For more information, see

http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121t/121t1/dtrimble.htm