Zabbix and Cisco Nexus - Data and network errors

[ro_yoshioka]

Hi,
I'm using Zabbix 3.4.4 but this problem seems to happens in 3.2 too (as a matter of fact, when I started monitoring switch cisco nexus when zabbix were in version 3.2, so I don't really know if this happened in previous version).

Problem 1 - Graphs of interface with IfHCXXOctets has a strange lower value, as if the interface were down, but the interface is ok. I gather data from the other side of the nexus, a juniper router, and this behavior doesn't happened. I will attach a graph.


Problem 2 - Same model of switch, when I started gather data from a port-channel interface, zabbix server started giving me network error like:

 
18312:20171122:084314.384 SNMP agent item "IfHCInOctets.PC4" on host "ADD-DataCenter-Switch2-0.18-C" failed: first network error, wait for 15 seconds
 18340:20171122:084343.652 SNMP agent item "IfHCInOctets.PC4" on host "ADD-DataCenter-Switch2-0.18-C" failed: another network error, wait for 15 seconds
 18317:20171122:084406.105 resuming SNMP agent checks on host "ADD-DataCenter-Switch2-0.18-C": connection restored

After that, data from all interfaces get blank spaces (of course, with network error zabbix stops getting data), and return when connection is restored.

I tested with 3 Cisco Nexus 3000 switchs with 3 versions of IOS software, including the newest version.

Is anyone with same issue??


Thanks.