Ohhh RYU Simple monitor program to watch the liveness of connected with to the RYU controller right. That part I have already obtained it. The problem is that when some raspi is failed, which openflow event that I can use to assign flow entry to the living node to assign flow table relay the data in order to establish alternate route. As far as I know, I can use switch feature handler to assign the flow entry proactively and packet in event to assign the flow entry reactively.
On Fri, Oct 19, 2018 at 3:26 PM Soe Ye Htet <[email protected]> wrote: > Thanks you i will try it out. The only what I need to do is sending the > openflow message to a live datapath ID. But if we apply packet in message > scenario, switch will need to send a lot of packet in message in oder to > reroute reactively but RYU,shows memory error when running 2 hours. If we > can apply the flow rules without packet in message when some node is failed > that problem can be resolved. > > On Fri, Oct 19, 2018, 3:12 PM IWAMOTO Toshihiro <[email protected]> > wrote: > >> On Thu, 18 Oct 2018 16:41:57 +0900, >> Soe Ye Htet wrote: >> > >> > [1 <text/plain; UTF-8 (7bit)>] >> > Dear, >> > >> > The problem is I dont know how to send flowmod message to raspi2 when >> > raspi1 is down to relay the data from raspi3 to gateway1. As far as i >> know >> > there is two ways to assign flow table to switch ID. By the switch >> feature >> > message to assign flow table proactively or packet in message to assign >> > flow table reactively. The problem is that i do not want to apply >> packet in >> > message for rerouting because packet in measage can consume a lot of >> memory >> > in ryu controller. What I am trying to do,is, monitoring node status all >> > the time, and send flowmod message to raspi2 to,relay data from raspi3 >> only >> > when raspi1 is down. How to assign the flow table in state change >> handler >> > function. >> >> In order to send OpenFlow messages, you'll only need Datapath of the >> other alive side of raspis. >> >> Something like ryu.app.simple_monitor_13 would work, I guess. >> >> -- >> IWAMOTO Toshihiro >> >
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