Hi Harlan, On Fri, 10 Jul 2015 13:30:15 -0700 Harlan Stenn <stenn@nwtime.org> wrote:
I know that Cisco, for example, uses NTP in around 10 different product lines, but I don't know what versions of NTP are in current use.
At least with the equipment with which I'm familiar they weren't using the reference implementation and as such, they didn't implement all the bells and whistles. So monlist and all the mode 6/7 stuff for instance isn't something you get with typical cisco gear, nor any ntp specific version number. Their implementation may be "older" in that sense, but perhaps safer, because it is "simpler" too. I had once heard the ntp code in ios was based on ntpd v3 (the code and protocol) and was relatively robust, done by a very capable coder. An authoritative voice on what the current state is would be helpful of course. Nonetheless, there are lots of cisco devices with ntp on them. Presumably most of them are using roughly the same code.
I'm also curious about the answers here for Juniper and other network gear providers. That would include routers, switches, and other types of gear.
JUNOS roughly follows FreeBSD and the reference implementation, but they have lagged behind a bit of what is generally available of course. You can easily find ntp running on JUNOS5 if that is any indication of what is in the wild. Jared probably has as good as any source of this data, but we have some too that might go back a little further. If you need anything more specific than the above, let me know. John