Is there a way I can force a 3845 to use DNS each time is does an NTP update? I'm trying to use the pool.ntp.org addrersses, but when I put them in the config, they resolve at that time. Since this is a public NTP service, these servers occasionally change, hence the need for ntp.org. Is there a way to have the router resolve the name each time?
As far as I know there is no way to have the IOS device use DNS to resolve each time it sends a request. It is standard behavior to resolve when the command is entered and to use the address going forward. If you are concerned about servers changing then the advice from Leo to configure multiple servers is a good solution. (and configuring multiple servers allows the IOS device to compare them and to identify any that are out of sync with the majority of the servers that you send requests to)
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
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provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...