proc SendArpOnAllActiveIntNgpf {} {
    # Send ARP on all active NGPF Device Groups.

    puts "\nSendArpOnAllActiveIntNgpf"
    foreach topology [ixNet getList [ixNet getRoot] topology] {
	foreach deviceGroup [ixNet getList $topology deviceGroup] {
	    if {[ixNet getAttribute $deviceGroup -status] == "started"} {
		foreach ethernet [ixNet getList $deviceGroup ethernet] {
		    foreach ipv4 [ixNet getList $ethernet ipv4] {
			SendArpNgpf $ipv4
		    }
		}
	    }
	}
    }
    after 3000
}