Support of SNMP data having dynamic index, where to find it ?

[Cygace]

The new version announce this new function : " Support of SNMP data having dynamic index? See SNMP section for more details. "

Where can I find this snmp section ? I looked into the new manual but there is nothing mentioned about this new feature.

This feature is really important for me thus if someone could help I would appreciate a lot

Thanks

[Cygace]

Does anybody has the answer ?

[jesmit]

I'm wondering the exact same thing. I've looked around items and discovery, but if I put in an index OID I just get "unsupported" error messages.

I don't need my hand held, but if someone could point out some documentation so I can test this setup it would be very helpful.

[Cygace]

Does anybody has a solution?

Thanks

[just2blue4u]

Just to get this right:
You are searching for a way to say Zabbix:
"There is a branch which shows CPU data for every core, go and search all values which are the LoadAVG1 for the single Cores and name them CPU LoadAVG<corenumber>"

If i got you right, i'm searching for such a way, too.
I haven't tried to use autodiscovery for that. Maybe i can get it to work that way...

[Cygace]

Here my problem is more with the cisco logged in users on the access point. It use dynamic index with various value thus I can't predict them

This is why I need really this function

[nelsonab]

Here my problem is more with the cisco logged in users on the access point. It use dynamic index with various value thus I can't predict them

This is why I need really this function

Could you put a script between the cisco device and Zabbix? IE the script will troll the SNMP data and then return the right information back to Zabbix.

[jesmit]

It seems like Cygace is having the same issues as myself. I *could* implement many workarounds, including a script to act as a frontend to snmptable. What I was really hoping for was for this to be included in the 1.5/6 branch.

It's not a huge deal for me if it is not included, but the release notes seemed to indicate it was included. I just can't figure out how to use it.

[naushit]

Usage example

I am also looking for an example how to use SNMP dynamic index.

Any pointer will be helpful.

Thanks in advance.

[rolandsym]

SNMP Dynamic example?

Hi,
I'd like to see one example or at least a some syntax. In the next few weeks I'm going to have some down time and I'd like to be able to convert current snmp templates and add more info(like VPN monitoring and wireless client list). Any thrown bones would be appreciated.

Rolandsym

[jcollie]

Example Syntax

Based on looking at the code, this is what I've found out:

<base OID of data>[index,<base OID of index>,<string to search for>]

As far as I can tell "index" must literally be "index". It appears that in the future there may be some more use for that parameter. So for example, to get the ifInOctets value for the GigabitEthernet0/1 interface on a Cisco device, you'd use something like the following:

ifInOctets[index,ifDescr,GigabitEthernet0/1]

Note that this will make many more SNMP queries each time the item is polled. There doesn't seem to be any caching mechanism yet.

[lukus]

<base OID of data>[index,<base OID of index>,<string to search for>]
.

I can confirm that it works. For example, say you do an snmpwalk like this:

$ snmpwalk -On -v2c -c public 10.3.0.1
.1.3.6.1.2.1.25.2.3.1.3.32 = STRING: /home
.1.3.6.1.2.1.25.2.3.1.3.33 = STRING: /tmp
.1.3.6.1.2.1.25.2.3.1.3.34 = STRING: /usr
.1.3.6.1.2.1.25.2.3.1.6.32 = INTEGER: 534320
.1.3.6.1.2.1.25.2.3.1.6.33 = INTEGER: 3
.1.3.6.1.2.1.25.2.3.1.6.34 = INTEGER: 819200

If you want the value for /home you would use an OID string like this:

.1.3.6.1.2.1.25.2.3.1.6[index,.1.3.6.1.2.1.25.2.3.1.3,/home]

[Alexei]

Shame on me, I was absolutely sure the information is already in the Manual!

[JoelG]

Does it need to be unique?

In the example above, does the string (for example, /home) have to be unique?

If I have multiple indexes with type (sonet, for example), could it correctly parse out the different interfaces?

Here is a snippet from snmpwalk:

IF-MIB::ifNumber.0 = INTEGER: 6
IF-MIB::ifIndex.2001 = INTEGER: 2001
IF-MIB::ifIndex.2002 = INTEGER: 2002
IF-MIB::ifIndex.2003 = INTEGER: 2003
IF-MIB::ifIndex.3001 = INTEGER: 3001
IF-MIB::ifIndex.8001 = INTEGER: 8001
IF-MIB::ifIndex.8002 = INTEGER: 8002
IF-MIB::ifDescr.2001 = STRING: Local SDH/SONET STM-1 radio Interface
IF-MIB::ifDescr.2002 = STRING: Local SDH/SONET STM-1 line Interface
IF-MIB::ifDescr.2003 = STRING: Local SDH/SONET STM-1 line Interface
IF-MIB::ifDescr.3001 = STRING: Local SDH/SONET STM-1 radio Interface
IF-MIB::ifDescr.8001 = STRING: Local Serial line NMS PPP Interface
IF-MIB::ifDescr.8002 = STRING: Local Ethernet NMS Interface
IF-MIB::ifType.2001 = INTEGER: sonet(39)
IF-MIB::ifType.2002 = INTEGER: sonet(39)
IF-MIB::ifType.2003 = INTEGER: sonet(39)
IF-MIB::ifType.3001 = INTEGER: sonet(39)
IF-MIB::ifType.8001 = INTEGER: ppp(23)
IF-MIB::ifType.8002 = INTEGER: ethernetCsmacd(6)

What if I was only interested in the radio interfaces, and not the the line?

[jcollie]

In the example above, does the string (for example, /home) have to be unique?

If the strings are not unique, I'm pretty sure the code will always pick the first one it sees. You could also try searching through IF-MIB::ifName and IF-MIB::ifAlias to see if there's a unique string.