I am working on the exact same thing. I was puzzled, as my switch port that uplinks to our 10Mbit fiber Internet connection showed 75% utilization OUTBOUND on the graph today over lunch.
I went into Templates, and created a local copy of the ethernetCsmacd template for that interface. I dug deeper and found out, sure enough: for Graph Definition>Throughput, ifInOctets has a Legend of OUTBOUND and ifOutOctets has a legend of INBOUND. This seems completely opposite to me! I verified the SNMP OID was pulling the right numbers and matched it up with a show interface command on the port (this is a cisco switch). Sure enough, the SNMP value of ifInOctets matched the Receive Statistics, total octets in the switch's command line interface. Here is how I think of inbound/outbound: Perspective My perspective when thinking about Inbound and Outbound data flow on any given interface is as if I am standing inside the device, right behind the socket you are plugging a cable into. I'm tiny, and I'm standing right behind that port - when you plug a cable into that port, the end of that RJ-45 connector is coming right at my face. So, having established Perspective, I consider data flow like this: Outbound = transmit = data flowing away from my face = ifOutOctets Inbound = receive = data flowing at my face = ifInOctets Having proofed this concept on a local copy of the template ethernetCsmacd on a single port on a single switch, I think I will change that Template Globally now... Unless anyone here can come up with a compelling reason not to. ;) -------------------- m2f -------------------- Read this topic online here: http://community.zenoss.com/forums/viewtopic.php?p=15947#15947 -------------------- m2f -------------------- _______________________________________________ zenoss-users mailing list [email protected] http://lists.zenoss.org/mailman/listinfo/zenoss-users
