DNAC Monitoring

[krishnachaudhary0924]

HI, I have a DNAC version 2.3.3.7 in my network, still under deployment process. The devices get resync every 24 hrs or interval which is good. But for monitoring perspective, I want my DNAC to keep in check the devices whether they go down ( which are discovered in the Inventory of DNAC). I tried looking up for ping reachablity timer changes or any changes of possible, but I couldnt find it. Can anybody please help me to give any solution ?

[Torbjørn]

You can achieve monitoring from the Catalyst Center by utilizing Catalyst Center Assurance and provisioning telemetry to the devices. See the following Catalyst Center documentation: https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/catalyst-center/2-3-7/user_guide/b_cisco_catalyst_center_user_guide_237/b_cisco_dna_center_ug_2_3_7_chapter_01010.html

[pieterh]

also without telemetry enabled DNA will "continuously" (5 min interval I think) poll the devices in the inventory using SNMP
for multiple data, (for example the port-status displayed in the "view device details")
so it will be detected if a device becomes unresponsive

for inter-switch-ports DNA will also report if one link goes down, so also the port of the uplink  switch will trigger the alarm if needed

[krishnachaudhary0924]

Hello and thankyou for your help.

According to the continuous poll, the DNAC should keep the devices up to each time, even after having a 5 mins of latency. Yet I see devices like Access Points not being updated about whether they go down at a certain point.

[krishnachaudhary0924]

Hello and thankyou for your help, but the dnac is already configured according to the document provided by you ( Except the Telemetry for Wired client which needs the configuration of netflow maybe ). Still I see a lot of latency in the devices being updated in DNAC. 

[edust]

You may adjust the resync and the snmp intervals (note this will increase traffic on the network significantly) but not the ping intervals. The Cisco Catalyst Center is a tool designed for many things, network control, assurance, analytics, troubleshooting, and deployment to name a few but it is not a monitoring tool. This is because of multiple reasons but generally if a device were to "go down" we should expect that the Cisco Catalyst Center will not report it for about 5 minutes. In a monitoring tool, this would be measured in seconds.