Date: Sat, 11 Apr 2009 15:21:17 +0300 From: Zach Shelby <[email protected]>
>>> Richard Kelsey a écrit : >>>> From: Carsten Bormann <[email protected]> Date: Fri, 10 Apr 2009 >>>> 19:00:42 +0200 >>>> >>>> (I don't tend to think about the case where there is no Edge >>>> Router -- ...) >>>> >>>> I have a question on this, stemming from my lack of familiarity >>>> with the details of IP routing. >>>> >>>> Suppose I have a 6LowPAN/ROLL network being used for energy >>>> management in a home. The network includes the electric meter, >>>> which has a backhaul connection back to the utility. The utility, >>>> being very protective of its backhaul network, has a firewall in >>>> the meter to keep out everything except the utility's own >>>> traffic. Given the presence of the firewall, does it still make >>>> sense to use the meter as an Edge Router? [Is an Edge Router an IP router? ... Yes.] Anyways, this stuff doesn't need to be completely "typical". I mean we are not installing an F-Secure firewall on a Windows PC here. These are application-specific embedded devices most of the time. You can use an embedded Linux box with Linux firewall features to achieve a 6LoWPAN Edge Router. Of course the 6lowpan wireless interface driver and ER features need to be implemented. In the network I was describing, the meter has no more horsepower than the other devices on the network. It has a small micro with around 4k of RAM. It certainly isn't something as powerful as an embedded Linux box. Is it unreasonable to expect it to act as an Edge Router? If not, how should its connection between the LowPAN and the utility backhaul be handled? -Richard Kelsey _______________________________________________ 6lowpan mailing list [email protected] https://www.ietf.org/mailman/listinfo/6lowpan
