[Observium] Cannot see ospf or bgp related graphs on Nexus 9000 and MX 480

Hi,I have installed Observium and have ospf and bgp related polling ,discovery parameters in the config.php file. However, I am unable to see the routing protocol related graph in the web page. Is there anything else that I need to do as I have these protocols running on the Nexus 9000 and MX480 router. Thanks,George