Script Example: Additional Information About Connected Node

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Requirements

Add information about name, IP address, and MAC address about connected node to notification about switch port being down.

Solution

Use named event attribute additionalInfo to pass information into e-mail body (using %<additionalInfo> macro). To populate this attribute the following script can be used:

// only for interface up and down events
if (($event->name != "SYS_IF_DOWN") && ($event->name != "SYS_IF_UP"))
	return true;
	
// get interface object from interface index
iface = GetInterfaceObject($node, $5);
if (iface == null)
	return true;

// get peer node (node connected to this interface) object
peer = iface->peerNode;
if (peer == null)
	return true;
	
// get peer interface object (needed to obtain MAC address)
peerIface = iface->peerInterface;
if (peerIface != null)
{
	macAddr = peerIface->macAddr;
}
else
{
	macAddr = "<MAC unknown>";
}

// set event's named parameter	
SetEventParameter($event, "additionalInfo",
	"Peer: " . peer->name . " " . peer->ipAddr . " " . macAddr);

return true;