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New Member

realtime - network topology viewer

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. 

network topology.png

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Silver

realtime - network topology viewer

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):

Scheduling Data Collection

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.

Table 6-2     Data Collection Schedule Settings

Field

Description

Usage Notes

Schedule

Days, Hour, Min

Days on which and the time at which data collection is scheduled.

The optimum data collection schedule depends on the size of the network and the frequency of network changes.

The default data collection schedule is every 4 hours, on the 4-hour mark, daily: 04.00, 08.00, 12.00, 16.00, 20.00, 24.00 Note that time is in the 24-hour format.


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

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.

6 REPLIES
Hall of Fame Super Silver

realtime - network topology viewer

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).

New Member

Re: realtime - network topology viewer

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 .

Hall of Fame Super Silver

realtime - network topology viewer

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.

New Member

realtime - network topology viewer

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 ?

Hall of Fame Super Silver

realtime - network topology viewer

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):

Scheduling Data Collection

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.

Table 6-2     Data Collection Schedule Settings

Field

Description

Usage Notes

Schedule

Days, Hour, Min

Days on which and the time at which data collection is scheduled.

The optimum data collection schedule depends on the size of the network and the frequency of network changes.

The default data collection schedule is every 4 hours, on the 4-hour mark, daily: 04.00, 08.00, 12.00, 16.00, 20.00, 24.00 Note that time is in the 24-hour format.


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

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.

New Member

realtime - network topology viewer

okay marvin,

thank you very much for the explanation.

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