Features 
The features added by this ZenPack can be summarized as follows. They are each detailed further below.
    Discovery and periodic remodeling of Neighbor Switches using CDP/LLDP.
    Monitoring of MAC Address table or Forwarding Table for each network interface of device.
    Event suppression based on MAC Address table. 
Discovery 
CDP/LLDP based collector plugin zenoss.snmp.CDPLLDPDiscover performs discovery of switches located nearby a selected device. 
Monitoring 
The ZenPack binds Layer2Info monitoring templates to the /Network device class in Zenoss. This activates monitoring of Layer 2 MAC forwarding tables for devices under that class. On the detail view of Interfaces components, the Clients MAC addresses subpanel is added with a list of MAC addresses. Those addresses are grouped by the client device they belong to. 
Event suppression 
When an upstream switch goes down, a flood of Device is DOWN! events for every device in an affected subnet can be generated. This ZenPack adds a zenevent plugin which suppresses such subsequent events for leaf devices. As a result, a system administator receives only a primary, core error event. 
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