Does anybody knows if the MRTG has a limit for the number of devices
to monitor? Is there a requirement for memory and CPU?
Does anybody has solve a similar issue?
As far as I know, MRTG does not scale well for very large networks if
you want high frequency monitoring. Try looking at www.Jilroy.com they
have a scalable solution. Try contacting their support. I have used
them and they helped me with a network of 10Ks of elements using ICMP
& SNMP.