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 Can NetOps Performance Center poll metrics on sub-interfaces

Jim Farrell's profile image
Jim Farrell posted Mar 17, 2024 10:03 AM

We have multiple ISR 1002 HX routers that provide multiple 10G interconnects to one of our transport providers.  And on these 10G transport interconnects we have multiple sub-interfaces carrying various traffic for multiple application providers.  We have no problem polling metrics on the entire 10G interconnect as a whole, yet we want to be able to poll each individual sub-interface in order to measure the traffic utilization of each application provider on that 10G interconnect interface.  Performance Center does allow us to select the sub-interface from the list of device interfaces, yet it is still only providing metrics on the entire 10G interface and nothing on the sub-interfaces.  We are currently at version 22.2.5.1037 so would like to know if metrics polling on sub-interfaces is possible, and if so, how do you implement it.  We are in planning stages of upgrading our entire NetOps (Spectrum, Performance Center, NetFlow, VNA, UIM, etc.) to the latest releases across the board, so if this functionality is added in a later release, please let me know.  Btw, each sub-interface does have an appropriately assigned /30 address on each side of the sub-interface connection.  Appreciate any guidance that can be provided to accomplish this task.  Regards;

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Jeffrey Pinard's profile image
Broadcom Employee Jeffrey Pinard posted Mar 18, 2024 09:44 AM

What vendor certification for Interface did it see as Supported?
Do you have Spectrum?  Are they being discovered there?

It could be the SNMP agent on the box isn't advertising those interfaces.

It could be the ifType of those sub-interaces are bring reported as Other (1).  The VC doesn't discover Other interfaces by default.  Check via mibwalk or mibtools in Spectrum.

If they are other, you can extend the OOTB VC and change the Filter to <Filter>ifType != 24</Filter>  to filter out only loopback.  Note: this could cause a large increase in interfaces discovered/poll in the Data Aggregator/Collectors.  So you may need to add a Monitoring Profile filter to limit which poll.