how to disable default SNMP probe from flooding network

hi guys,

i noticed my devices are beign bombarded with snmp probes by simply adding them to the dude, the results of these floods are found by right clicking the device, clicking SNMP tab, and looking at those fields (interface, IP, route) etc

how can i disable those fields from being populated (walked).

thanks

not yet?
maybe in future? :slight_smile:

i love the product anyway.

http://wiki.mikrotik.com/

I think you understood my question to be Alot more amature then what I asked. Anyone productive ?

I merely thought you didn’t disable the attempt to add probes for specific device types.

Do you have all those services able to be discovered?
http://wiki.mikrotik.com/wiki/File:Device_Discovery-2010-06-30_12.18.24.png

Probing devices with poor code can take them down.

hi mate, this sound interesting how do i disable those items from being discovered?

i can only get to that screen your clicking on when i click “discover” for a map however this isnt picked up during a discovery it’s picked up during adding a new device.

When doing discovery, set which services you like to discover:
http://wiki.mikrotik.com/wiki/The_Dude/Device_discovery#Device_Types

guys im really sorry i must have explained myself incorrectly.

I’m not doing a discovery at all. i’m adding the device manually but adding the device manually will automatically discover device stats found under the SNMP tab

When you add a device manually no services are discovered but if you click the discover button inside the device settings it will try to discover services based on the map; discover, services list which are derived from the main settings(top left under preferences), discover tab.

The items being populated in the SNMP tab of the device settings are all automatic. They are a bunch of generic values collected occasionally, yes it is a bunch of stuff but it should not overload the switch. I would not call it bombarding unless it is taking the device down.

On a Cisco device you can block certain things from being read, I don’t think there is anything like that in 3com. Although the only SNMP thing I have found worth stopping is not reading the entire BGP routing list from a router connected to the internet.

HTH,
Lebowski

thanks for that, so there is no way to disable those SNMP fields from being automatically populated? althogh their small when you have thousands of devices it’s painful

Now I am curious about your environment… What is your polling interval?

We are currently investigating network issues that have been causing drop-out on our VoIP system for a few months. It looks very much like the default SNMP queries that The Dude does are contributing to (if not the sole cause of) this problem. We have set the default SNMP profile for the core switch/routers to no-snmp to try and probve the relationship between the drop-outs and The Dude. Are there any plans to allow user configuration of the default SNMP queries?

I am also having serious SNMP issues that seem to be causing other issues also on the network. Our main Dude server started crashing the Dude service every 1/2 hour starting on 7/27 of this year. In looking at what was going on, I found that “the Dude” was generating massive SNMP queries against almost all of my devices. In particular, in a capture of about 2 minutes, it generated 180,000+ snmp queries against that server, and about 480,000 snmp queries total. None of these servers were new, and the only thing I changed on that date was one SNMP probe against our Mikrotik APs. The servers that I saw the massive SNMP traffic against were not using that probe.

Any ideas what might be causing this?

Hi , i am using dude 3.6 and had the same problem , then i at a new snmp profile : name No SNMP , version none , and choose that by the device settings, general , snmp profile, that stopped the dude from quering snmp for that device.