Ntp not updating cisco
Yes, the kernel will start with the hardware clock on boot since on boot that is it's only reference.
If it's been running for many months, as you say, then that isn't it. I'm not sure about Ubuntu but on Red Hat based systems that's in /etc/sysconfig/ntpd.
Getting Cisco phones working with asterisk may seem like a daunting procedure; getting SIP firmware installed on the phone, loading up the the firmware files in the tftp server, fearing that you will somehow brick the phone by an incomplete firmware upload…But I am here to reassure you that once you understand how Cisco phones update themselves, the fear and trepidation will subside. They just need a tftp server to update its firmware and it doesnt even have to be located on the asterisk/phone system itself. But what is essential in upgrading these phones is a DHCP server with option 150 enabled – an option to auto-provision the tftp server ip address when the DHCP server hands out the regular ip address to the phone.
Point the tftpd32 program to use that directory, copy the xml file to that directory and edit the load Information tag with the POS-xxx filename which is located in that directory and reboot the phone.
Thank goodness for DHCP option 150 which does this for us when the phone grabs an IP address after loading the bootloader.
Below are instructions to upgrade/convert any Cisco 7940, 7941, 7960, 7961, 7970, 7971, 7942, 7962, 7945, 7965 IP phone to any firmware you want from the Cisco web site (SIP/SCCP), and to recover any cisco phone which may have screwed up somehow while upgrading firmware (like if you get the protocol application invalid message). Goto and create a login if you do not already have one.
If you have any questions, feel free to send me a message on my contact page, if you get really stuck I can also provide these services remotely.
hi, We have configured new NTP server on Windows server and now I want to sync my core cisco 3845 router with ntp server.