02-06-2012 02:51 AM
Hello guys,
is it possible to see realtime network topology viewer without collecting data manually. because everytime my device down , i have to click "perform data collection button " to see realtime network topology. without pressing it, looks like our device still up.
Solved! Go to Solution.
02-06-2012 07:29 AM
You should not set data collection to less than 5 minutes. It will likely be continually be consuming resources on your server and adversely affect performance (usability).
Here is the relevant section from the above reference (the same documentation should be available with your server):
Data Collection runs automatically when you add, or delete devices in the Unified Device Manager (UDM).
You can also schedule the day and time of data collection using this feature.
You can start data collection immediately for all or failed devices and schedule data collection for all devices. All devices is a default option. You can select the Failed devices option to run data collection for failed devices.
To schedule data collection:
Step 1 Select Admin > Collection Settings > Data Collection > Data Collection Schedule.
The Data Collection Schedule dialog box appears.
Step 2 Modify the data collection settings as described in Table 6-2.
•Select a schedule and click Edit to edit the schedule.
•Select a schedule and click Delete to delete the schedule.
•Click Add to add a new schedule.
Step 3 Click OK to save the changes or click Cancel to exit.
Best Practices
Be cautious while scheduling Data Collection:
•Data Collection consumes significant resources on the network management system.
•Use the Polling option to see the device and link status without running data collection. For more details on polling see, Data Collection Critical Device Poller
LMS polls the entire network for device and link status periodically.This feature allows you to:
•Configure the time interval at which the network is polled.
•Poll only a critical set of devices.
Use this option to see the device and link status without running Data Collection.
Since Data Collection consumes significant system resources, you can simply poll the network and view the device and link status in Topology maps.
Adding Critical Devices to the Device Poller
To add a device to the Critical Devices list from Topology Map:
Step 1 Launch a Topology map.
Step 2 Right click a device and select Add device to Critical Poller.
02-06-2012 06:08 AM
The Monitoring Dashboard and associated Fault Monitor is the place where LMS displays closer to realtime device status. Please refer to the Monitoring and Troubleshooting guide for LMS.
The Topology Viewer is not intended to fill that purpose. It is more for network visualization and analysis and only incidentally displays reachability / status information based on the most recent data collection (which may be hours or even days ago depending on your settings).
02-06-2012 06:31 AM
thanks for your response,
can we set data collection to be automatically renew in several seconds/minutes ?
sorry, i thought LMS can display real-time network topology as Network management system (like cacti) do .
02-06-2012 06:41 AM
It is possible to do so but it is not recommended. The default data collection is every 4 hours.
You can use the critical device poller on selected devices if you want but Cisco recommends only doing so for a small (30 or fewer) number of devices.
Reference for the above is here.
Again, the Topology window is not the right place to be watching for this information.
02-06-2012 07:22 AM
hello marvin,
sorry i can't open the reference document that you gave to me. ehm.. actually i just wanna add 50 devices to our LMS. and what do you think the effect if i change the data collection to be less than 5 minutes ?
02-06-2012 07:29 AM
You should not set data collection to less than 5 minutes. It will likely be continually be consuming resources on your server and adversely affect performance (usability).
Here is the relevant section from the above reference (the same documentation should be available with your server):
Data Collection runs automatically when you add, or delete devices in the Unified Device Manager (UDM).
You can also schedule the day and time of data collection using this feature.
You can start data collection immediately for all or failed devices and schedule data collection for all devices. All devices is a default option. You can select the Failed devices option to run data collection for failed devices.
To schedule data collection:
Step 1 Select Admin > Collection Settings > Data Collection > Data Collection Schedule.
The Data Collection Schedule dialog box appears.
Step 2 Modify the data collection settings as described in Table 6-2.
•Select a schedule and click Edit to edit the schedule.
•Select a schedule and click Delete to delete the schedule.
•Click Add to add a new schedule.
Step 3 Click OK to save the changes or click Cancel to exit.
Best Practices
Be cautious while scheduling Data Collection:
•Data Collection consumes significant resources on the network management system.
•Use the Polling option to see the device and link status without running data collection. For more details on polling see, Data Collection Critical Device Poller
LMS polls the entire network for device and link status periodically.This feature allows you to:
•Configure the time interval at which the network is polled.
•Poll only a critical set of devices.
Use this option to see the device and link status without running Data Collection.
Since Data Collection consumes significant system resources, you can simply poll the network and view the device and link status in Topology maps.
Adding Critical Devices to the Device Poller
To add a device to the Critical Devices list from Topology Map:
Step 1 Launch a Topology map.
Step 2 Right click a device and select Add device to Critical Poller.
02-06-2012 09:17 AM
okay marvin,
thank you very much for the explanation.
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