Pingable models not resolving to switch ports after running Spectrum AutoDiscovery

Document ID : KB000041409
Last Modified Date : 03/12/2018
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Issue:

Pingable models not resolving to switch ports after running Spectrum AutoDiscovery

Cause:

After running an AutoDiscovery, the Pingable models do not have a mac address associated which is causing them to not resolve to the switch ports

Resolution:

In order for Spectrum to associated a mac address to a Pingable model, the following two criteria must be met:

1. The "ARP Tables for Pingables" must be selected in the "Protocol Options" in the "Modeling Configuration" of the AutoDiscovery configuration:

 

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2. A layer 3 device in the same subnet as the Pingable model must be modeled in the Spectrum database

 

When the "ARP Tables for Pingables" modeling protocol is selected, Spectrum looks for a layer 3 model that is in the same subnet as the Pingable model. If found, Spectrum reads the ipNetToMediaTable from the device to resolve a mac address to the ip address of the Pingable model. If resolved, the MAC_Address attribute id 0x110df on the Pingable model will be populated. 

Additional Information:
Please reference the "How to Discover and Model the Network" section of the documentation for more information.

https://docops.ca.com/ca-spectrum/10-3-0/en/managing-network/modeling-and-managing-your-it-infrastructure/discovering-and-modeling-your-network/how-to-discover-and-model-the-network