Determine if SNMP host is down?

[dstubbs]

How can I determine if a SNMP host is down?

I am monitoring a managed switch(TigerSwitch 6924M) which of course does not use the agent; strictly SNMP.


I am monitoring 3 stats on it currently.
sysName (system.hostname)
ifInOctets1 (net.inpackets)
ifOutOctets1 (net.outpackets)

I have tried this trigger but it is falsely triggering.

{Switch:net.inpackets.nodata(60)}=1

Thanks

[peter_field]

Maybe simple checks?

You could try putting a simple check (icmpping) onto it as well, and trigger off that.

[baalrukh]

Not the best way, but i'm using the sysName, if it as no return in 70 sec, it marks it down, the trigger is set in 60 sec, to avoid getting missreads

[den_crane]

....
I have tried this trigger but it is falsely triggering.

{Switch:net.inpackets.nodata(60)}=1

What Item (Update interval (in sec)) you use? May be nodata(60) is too short?

Check log for errors:
cat /zabbix_server.log |grep vol
015913:20061009:120124 Host [san-vol-2]: first network error, wait for 15 seconds
015911:20061009:120143 Host [san-vol-2]: another network error, wait for 15 seconds
015911:20061009:120159 Host [san-vol-2]: another network error, wait for 15 seconds
015911:20061009:120215 Host [san-vol-2] will be checked after 60 seconds

I use next triggers expressions:
{cisco_t:sysUpTimeInstance.nodata(300)}=1
{cisco_t:IF-MIB::ifOperStatus.3.last(0)}#1
Work's fine.

[dstubbs]

Problem solved

You could try putting a simple check (icmpping) onto it as well, and trigger off that.

This solution worked great.

Thanks all for the advice!