UNKNOWN - got neither sysUptime nor sysDescr

[Beatlor]

Hello I see a problem with a check-result from check_nwc_health. I have a provider CPE router Cisco 3925 and authorized to grep all SNMP information out of the box and want to get out the interface datas. But obviously I can't read the sysDescr

SNMPv2-MIB::sysDescr.0 = No Such Object available on this agent at this OID (Whyever the Cisco is here not reporting anything)

But .. I can read the uptime sysUpTimeInstance = Timeticks: (3609298003) 417 days, 17:49:40.03

finally the check only reports /check_nwc_health --hostname test --community private--mode uptime UNKNOWN - got neither sysUptime nor sysDescr, is this snmp agent working correctly?

caused by decision in modul SNMP.pm Line 984: if (defined $sysUptime && defined $sysDescr) {

"neither-nor" means NOT one OR the other and not AND, or I'm the wrong track?

[lausser]

Both values have to be defined. Gesendet von meinem Windows 10-Gerät. Von: mailto:[email protected] Stephan Callsen Gesendet: Freitag, 13. März 2020 08:52 An: mailto:[email protected] lausser/check_nwc_health Cc: mailto:[email protected] Subscribed Betreff: [lausser/check_nwc_health] UNKNOWN - got neither sysUptime nor sysDescr (#236)Hello I see a problem with a check-result from check_nwc_health. I have a provider CPE router Cisco 3925 and authorized to grep all SNMP information out of the box and want to get out the interface datas. But obviously I can't read the sysDescr

SNMPv2-MIB::sysDescr.0 = No Such Object available on this agent at this OID (Whyever the Cisco is here not reporting anything)

But .. I can read the uptime sysUpTimeInstance = Timeticks: (3609298003) 417 days, 17:49:40.03

finally the check only reports /check_nwc_health --hostname test --community private--mode uptime UNKNOWN - got neither sysUptime nor sysDescr, is this snmp agent working correctly?

caused by decision in modul SNMP.pm Line 984: if (defined $sysUptime && defined $sysDescr) {

"neither-nor" means NOT one OR the other and not AND, or I'm the wrong track?

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[Beatlor]

Thx for the answer but how can I get the informationout out of the provider Cisco? The check has no switch or option to spoof or inject the missing snmp parameter?

[Beatlor]

Now I know that the provider is actively blocking the SNMP view of sysDescr. In this case I (have to) use another check. Think you can close this issue.

[Rohlik]

I have exactly same problem with F5 BIG-IP i2800 LTM device. I also get: UNKNOWN - got neither sysUptime nor sysDescr, is this snmp agent working correctly?

So that it is mean, that also F5 is not supported?

[lausser]

When you run an snmpwalk, do you get a crippled result? sysUptime and sysDescr should be among the minimum mandatory oids an snmp agent has to implement. Does your provider/admin/... actively block sysDescr?

[Rohlik]

@lausser You are right, this was a permission issue. I did not have access to that oids. Thank you.