SNMP enumeration of interfaces changes


#1

Hi!

I just made an update of one of my Peplink Balance ONEs.
The problem is, that the interface-numbers are not "stable:

Before upgrade: 4G-interface: 007
After upgrade: 4G-interface: 011

Before upgrade: First VPN - 008
After upgrade: First VPN - 009

–> My monitoring fails.

How can I achieve, that these definitions are “stable”?

Regards,
KPS


#2

@KPS

Do you mean the interface number is changed ? May i know the firmware version before and after upgrade firmware ?

Beside that , wold you able to share the SNMP OID you are using ?


#3

@sitloongs

It was an update from one 7.1.1 build to another.

I am using PRTG which checks:

  • description:
    1.3.6.1.2.1.2.2.1.2.INTERFACENUMBER
  • status:
    1.3.6.1.2.1.2.2.1.8.INTERFACENUMBER

etc.
Linux-default-mib.


#4

@KPS

Would you able to confirm the firmware version that you upgraded ?


#5

@sitloongs

It was 7.1.1s067-build3888 to 7.1.1s104 build 3995


#6

Please try our MIB. You should able to query with OIDs below:


#7

@KPS

Don’t think this is related to the firmware upgrade as your device still running under firmware 7.1.1.

I may need more information from you in-order to confirm this.

Would you please share me the ifIndex & IfDescr for your device now ? That should give you the current interface mapping for the device now.

ifIndex - .1.3.6.1.2.1.2.2.1.1
ifDescr - .1.3.6.1.2.1.2.2.1.2

If you find the SNMP polling results can’t share here, please PM me the results and we can further discuss the results using private message (PM).