SNMP Trap Generated Alert
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SNMP Trap Generated Alert
Posted: Fri, Mar 05, 2010 6:23 PM :: Rank: 86
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Points: 210
Level: System Center Hero

Hello friends

Add several switch to be monitored by the SCE, when adding them, began to generate an endless number of alerts.


Alert: SNMP Trap Alert Generated
Source: 192.168.100.21
Path:
Last modified by: System
Last modified time: 01/03/2010 05:26:04 AM
Alert description:

Alert view link: "? DisplayMode = Pivot & Alerts =% 7b92f09ba4-1b7a-4f93-9f60-3b1a29ac51e5% 7d"
Notification subscription ID generating this message: (0FA17D4F-841E-8285-44D0-613EA3B5A3BB)


Check it every swich and have correct configuration, I downloaded a tool to check the device with snmpget and he responds well, I have reviewed the diagram view and shows me that the device is ok but I is monitoring network interfaces, I executed healt explorer and see that
the availability of the device itself is ok but the interfaces are not monitored or performance, or security, but the view of performance if he shows me data.

Please would you I do

Grateful

Greetings

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Re: SNMP Trap Generated Alert
Posted: Sat, Mar 06, 2010 3:40 AM :: Rank: 98
Author
Points: 6358
Level: System Center Specialist
The Alert you are referring to is a trap send by the switch to you SCE environment and being picked up and alerted on.

What you should check is the source ip which should lead you to the switch. Most SNMP devices have a configuration to send a snmp trap if a certain condition is detected.

Your switch is most likely having a problem. You can logon to the management interface of the switch and check if there are any error messages in the logs. If so analyze the error messages and resolve them. It could be a misconfigured port or something similar.

When an error message is logged in the log of the switch it is probably configured to send out an SNMP trap to you SCE and that's why you receive the SNMP TRAP alerts.

Also as an advice when adding the devices you may want to check the switch log before importing and add them one at a time. This way you can evaluate each switch before importing another one and avoid getting numerous alerts.

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RE: SNMP Trap Generated Alert
Posted: Sat, Mar 06, 2010 11:30 AM :: Rank: 120
Author
Points: 65442
Level: System Center Expert

And do be sure to consider if trap-based monitoring is the way you  want to go. Probe-based monitoring allows you  to control the flow a bit better, as even a filtered trap rule doesn't stop devices from sending loads of packets to your Essentials server.

See the following for some bits on how SNMP monitoring works in Essentials, as well as some of your SNMP monitoring options

 

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Re: SNMP Trap Generated Alert
Posted: Tue, Mar 09, 2010 10:13 AM :: Rank: 110
Author
Points: 210
Level: System Center Hero
The switches are fine, no problem there, the matter is I can not see the network interfaces, I can not monitor.



As I said before I am experimenting with these switches, I will check this links and tell them.



Greetings
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RE: SNMP Trap Generated Alert
Posted: Tue, Mar 09, 2010 4:37 PM :: Rank: 92
Author
Points: 160
Level: System Center Hero

Personally I like receiving TRAPS just based on getting alerted to some things as they happen instead of the next poling interval

Some of this may be of use if you want to figure out the switch and write your own pack.

http://www.blackops.ca/cms/blog/?p=22

 

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