Constrained devices equipped with a microcontroller and a low-power low-bitrate wireless interface are becoming part of the Internet. We investigate whether the monitoring and configuration of such constrained devices can be performed by adapting the Simple Network Management Protocol (SNMP) to the capabilities of these devices. To this end, we have implemented an SNMP agent under the Contiki operating system. We provide an analysis of its resource requirements and its runtime behaviour on an 8-bit AVR Raven platform.