Siemens SIMATIC S7-CPs Manual page 43

Supported MIB objects
The CP supports the following groups of MIB objects of the MIB II standard, LLDP
MIB and automation system MIB according to RFC1213:
S System
S Interfaces
S IP
S ICMP
S TCP
S UDP
S SNMP
S Address Translation (AT)
The other groups of the MIB II standard are not supported:
S EGP
S Transmission
The CP also supports the LLDP-MIB according to IEEE 802.1AB and the
PROFINET expansions of the LLDP-MIB (see also IEC 61158-10-6).
Exceptions / restrictions:
S Write access is permitted only for the following MIB objects of the system
group:
sysContact, sysLocation and sysName;
For all other MIB objects / MIB object groups, only read access is possible for
security reasons.
S Traps are not supported by the CP.
"Interfaces" MIB group
The "Interfaces" MIB object provides status information on the CP interfaces, with
the following assignment:
This group returns status information about the CP interfaces. The MIB objects of
the ifTable provide the status information of the interfaces. The "ifIndex" object
identifier is assigned to the CP interfaces as follows:
ifIndex
1−2
3
CP 443-1 for Industrial Ethernet / Manual Part B
Release 07/2010
C79000-G8976-C223−06
8 Further Notes on Operation
Type of interface
Port 1−2
Internal CP interface
B−43