Ulrich, The was some prior related work in the RMON WG on the RAQMON model (RFCs 4710 and 4711). This monitoring framework was explicitly designed to monitor low-power, hand held devices, e.g., phones. Dan was one of the co-authors. Folks may want to read thru these RFCs.
Thanks, Bob -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ulrich Herberg Sent: Wednesday, November 18, 2009 4:10 PM To: 6lowpan; [email protected]; [email protected] Subject: [manet] SNMP optimizations Hi, I am sending this message to the 6lowpan, ROLL and MANET mailing list, since I think this topic concerns all three working groups, and I am not sure in which WG this is to be tackled. During the MANET WG meeting and also during an OLSRv2 Interop workshop, we had discussions about SNMP deployments in such ad-hoc networks we are dealing with. The issue that was raised (and which is also described in draft-hamid-6lowpan-snmp-optimizations) is that SNMP may be too memory-/CPU-/bandwidth-consuming for low-power devices. However, a solution for monitoring and management of these devices is desired (and also required by IETF). The before-mentioned draft describes very well how to optimize SNMP for running it on 6lowpan devices, and shows that the SNMP payload can fit into 6lowpan packets. However, it is unclear whether the code footprint of SNMP implementations can fit into the memory of small devices. From discussions with several persons from the MANET WG, I conclude that for MANET the same problem exists. (and I think for ROLL, too?) I have several questions that came to my mind about this topic: - First of all, to which WG does this issue belong to? Or is it -- as I suppose -- a common problem for the three working groups addressed in this mail? - Is this really an issue? Are there implementations of SNMP (maybe not open-source) that can be run on very small devices such as considered in 6lowpan/ROLL/MANET? Is there any experimental (or theoretical) analysis whether SNMP (or any other standardized management protocol) can run on these devices? - If SNMP cannot be used for small devices, how can we manage and monitor these devices then? (e.g. using proxies, different message formats such as proposed in 6lowapp, etc.). Do we need a different lightweight protocol for management? - Can we provide SNMP not only on a single device, but for a whole network? That might need an aggregator device that runs full SNMP and collects the data from the low power devices. This would imply to monitor statistics of a whole network (e.g. number of links, average throughput, average path-length, etc.) - What kind of objects should be provided in a MIB running on a MANET/6lowpan/ROLL device? This might be specific to the routing protocol, but there can be commonalities. Regards, Ulrich _______________________________________________ manet mailing list [email protected] https://www.ietf.org/mailman/listinfo/manet _______________________________________________ 6lowpan mailing list [email protected] https://www.ietf.org/mailman/listinfo/6lowpan
