Data query fails for 3COM 8800 (8814)

[OlivierB]

Hi,

I'm running Cacti 0.8.7g in order to retrieve standard interface informations from a 3COM 8814 (comware V3.01.32r) but each time I launch the query it does not return any information (see the result of the query here under).

+ Running data query [1].
+ Found type = '3' [snmp query].
+ Found data query XML file at 'C:/Apache2/htdocs/cacti/resource/snmp_queries/interface.xml'
+ XML file parsed ok.
+ Executing SNMP walk for list of indexes @ '.1.3.6.1.2.1.2.2.1.1'
+ No SNMP data returned
+ Found data query XML file at 'C:/Apache2/htdocs/cacti/resource/snmp_queries/interface.xml'
+ Found data query XML file at 'C:/Apache2/htdocs/cacti/resource/snmp_queries/interface.xml'
+ Found data query XML file at 'C:/Apache2/htdocs/cacti/resource/snmp_queries/interface.xml'

However when I use a MIB browser (iReasoning 7.5 Personal Edition), I'm able to walk the MIB using the standard MIB RFC 1213.

If I apply the same query with a 3COM5500, it collects informations without any problem.

Does anyone have an idea of the origin of this problem which seems specific to this model 3COM8814?

[TheWitness]

Likely something to do with snmp, like a timeout. Also, are you using snmpv3?

[OlivierB]

I'm using SNMP v2. The default SNMP timeout is 100 ms in Cacti. I pushed it up to 1000 ms and I obtained the same result.

[TheWitness]

Run the query from the command line on the Cacti server. There may be an ACL blocking your access to the entire tree from the Cacti server. Typical with a default net-snmp install. On debian it's worse, you have to modify the defaults file to open net-snmp to accept connections from foreign hosts.

TheWitness

[OlivierB]

Thanks. I'm going to try this.

I've not been precise enough when I said I did not get a result after increasing the snmp timeout. Actually, I obtain a different result. It returned 463 rows but I've just the object index and no other fields like status, description, name, ... (see attached file). 463 corresponds to the number of interfaces that I've on this switch.

[OlivierB]

Following your advice, I lauched the following command on my Cacti server:

C:\net-snmp\bin>snmpwalk.exe -c readcommunity -v 2c 10.1.0.1

And it did walk all over the objects giving me all the informations that I'd like to get in my graph!

I've got the feeling that this switch does return too many informations if using the standard "SNMP - Interface Statistics" cacti query. I think I need to customize my query so that it work with this switch wich is a big one (more than 450 interfaces).

Thanks again for your help.

[TheWitness]

It could be that you are running your server out of memory, or it's running too long and timing out. Who knows. Both those settings are configurable. I'm sure you will figure it out. The cli script poller_reindex_hosts.php might shed some light on it.

TheWitness