I have also requested this, but to sum multiple interfaces across multiple devices to create a "logical" object to represent different types of traffic or sum of multiple UDP collectors such as "total VPN connections" across multiple devices.
Depends what kind of NIC'S/drivers you have. I have a situation like that but monitor both through a virtual adapter called: BASP Virtual Adapter - instead of each individual interface. As far a SW's way to group them... I don't think there's an easy way... if someone has a great solution to this I too would love to hear it.
I do have Broadcom nics however I think the BASP Virtual Adapter only applies to Windows platforms. I'm playing with ESX :-(
Looks like this is a feature request for the next version of NPM..
I wonder if in the following kind of scenario you could then monitor the "bond0"
4.1.4 Configuration 4:
In this configuration, NIC 0 is shared between the service console and the VMkernel. NIC 1 is dedicated to VMkernel. NIC 0 and NIC 1 are teamed by the VMkernel to provide a bond. This bonding provides for NIC redundancy and load balancing.
The steps to enable this configuration are:
4. Log in with root level privileges to the service console and execute the command
. This is an interactive command to allocate devices between the service console and virtual machines. Configure NIC 0 to be shared between service console and Virtual Machines.
5. Create a NIC team by adding the following lines to the end of the file
nicteam.vmnic0.team = "bond0"
nicteam.vmnic1.team = "bond0"