How can I merge the old and the new interface statistic data after Ifindex changed?

chito

* Orion NPM v10.0

Some interfaces became "Unknown" after Cisco Aironet 1130 rebooted.

I know the solution is to delete the Unknown interfaces and add them again.

But I would like to keep the old historical statistic data after adding the new interface.

If there are any tips to achieve it, please share with me.

I think if I should update old InterfaceID values of the following tables to the new InterfaceID before deleting the Unknow interfaces.

• CustomPollerAssignment
• TopologyData
• CustomPollerScratchStatistics
• DiscoveryPhysicalInterfaces
• InterfaceCustomPollerJobs
• InterfaceErrors_Daily
• InterfaceErrors_Detail
• InterfaceErrors_Hourly
• InterfaceSignalNoise_Daily
• InterfaceSignalNoise_Detail
• InterfaceSignalNoise_Hourly
• InterfaceTraffic_Daily
• InterfaceTraffic_Detail
• InterfaceTraffic_Hourly

*I know it must not be supported and "snmp ifmib ifindex persist" is the solution.

Should never do this?

Please give me your comments.

sschoenh

In the past when we move an interfaces around, whether it be to a new chassis or another port, I've gotten lucky by going into the interface table in the database and changing the index # manually.  Now I'm not saying this is a proper fix, but maybe someone from SW can chime in and say if this a "graceful" fix or not.