Forum Discussion

Aspirant

Sep 06, 2018

Solved

SNMP-OID for the MAC of the connected Device

Hello Community, i am working on a script, which is collecting data from the switches via SNMP. My problem is, that i need to know the OID which can be used to find the MAC of a Client direct...

Software & Apps

robinchristes
Sep 12, 2018
I've found the solution:

if the request returns iso.3.6.1.2.1.17.7.1.2.2.1.2.1.0.34.100.189.60.156 = INTEGER: 7, the integer-value represents the port of the MAC-address and the last 6 numbers of the OID represent the MAC-address in decimal format, in this example it means that the MAC-address connected to port 7 is 00:22:64:BD:3C:9C.

Thank you for your help :-)

robinchristes

Aspirant

Sep 07, 2018

Hi DaneA,

I have to say, that I am not able to find the mac-address of the clients with the given documents. I have scanned all OIDs of the switch with snmpwalk, and i got some of the macs of connected clients, but not all (which are shown under the section switching-->address-table) although they are online.

For example, the client connected to port 7 is showed as iso.0.8802.1.1.2.1.4.1.1.5.18524162.7.7 = Hex-STRING: 00 22 64 BD XX XX, but the client connected to port 11 doesn't appear.

Is there probably another way to get the other addresses on an indirect way?

Regards,

Robin

DaneA

NETGEAR Employee Retired

Sep 11, 2018

robinchristes,

I inquired your concern to the higher tier of NETGEAR Support. As per the higher tier of NETGEAR Support, kindly use this SNMP’s OID: 1.3.6.1.2.1.17.7.1.2. E.g: “snmpwalk -v 2c -c public 10.130.181.156 1.3.6.1.2.1.17.7.1.2”.

Regards,

DaneA

NETGEAR Community Team

robinchristes
Aspirant
Sep 11, 2018
like

DaneA

I've tried this and it returns an bunch of Integer-Values like iso.3.6.1.2.1.17.7.1.2.2.1.2.1.0.0.203.97.24.145 = INTEGER: 52

but what do they mean and which direction is given to generate this OIDs?

Regards
- DaneA
  NETGEAR Employee Retired
  Sep 11, 2018
  robinchristes,
  
  Please be sure that the MAC address table that you are looking for via the SNMP’s OID is present into the Switch’s GUI.
  
  Regards,
  
  DaneA
  
  NETGEAR Community Team
  - robinchristes
    Aspirant
    Sep 11, 2018
    DaneA
    
    yes, it is present, as can be seen here