a customer is having problems with exactly the same symptoms. No ping, no telnet, but user dosen't report any problems. It is just that you are unable to ping or telnet to the switch. If they are managed in DFM you should see a message 'insufficent free memory' around one day before they are unreachable. Customer reloads the swith to get it solved for the next couple of weeks.
Try to do an snmpwalk on the sysObjectId just to see if this works.
If it does you could remotly get some more info about the swith with SNMP (like memory util., CPU util. or even reload the swith with SNMP)
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
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...