.. meta::
   :description: The supported SNMP OIDs in Micetro by Men&Mice.
   :keywords: SNMP, service discovery, DHCP, ARP tables, Micetro

.. _snmp-oid:

Which SNMP OIDs are used by Micetro in IP address and Subnet Discovery
----------------------------------------------------------------------

Micetro has the capability to scan a defined list of routers and retrieve the ARP tables and/or the subnets and their information found on the routers.

To perform this scanning, the following suite of SNMP OIDs are used:

IP-MIB:
"""""""

* ipNetToMediaPhysAddress: .1.3.6.1.2.1.4.22.1.2

* ipAdEntAddr: .1.3.6.1.2.1.4.20.1.1

* ipAdEntIfIndex: .1.3.6.1.2.1.4.20.1.2

* ipAdEntNetMask: .1.3.6.1.2.1.4.20.1.3

ENTITY-MIB:
"""""""""""

* entPhysicalSerialNum: .1.3.6.1.2.1.47.1.1.1.1.11

SNMPv2-MIB:
"""""""""""

* sysName: .1.3.6.1.2.1.1.5

CISCO-VLAN-IFTABLE-RELATIONSHIP-MIB:
""""""""""""""""""""""""""""""""""""

* cviRoutedVlanIfIndex: .1.3.6.1.4.1.9.9.128.1.1.1.1.3

CISCO-VRF-MIB:
""""""""""""""

* cvVrfInterfaceType: .1.3.6.1.4.1.9.9.711.1.2.1.1.2

* cvVrfName: .1.3.6.1.4.1.9.9.711.1.1.1.1.2

.. note::
  Each device is only queried once, as the system checks the serial number and the sysName to discover both physical and virtual switches.