On Fri, 12 Oct 2018 21:44:53 +0900,
Soe Ye Htet wrote:
> I am developing some rerouting scenario when there is some node failure. I
> have attached my testing topology testbed. RYU controller is at the gateway
> 1 and raspi 1 and raspi 2 are directly connected to gateway 1. raspi 3 is
> connected to raspi 2 and raspi 1. The primary route for raspi3 to gateway 1
> is raspi 3 - raspi 1 - gateway 1. what i am trying to do is when raspi 1 is
> down, RYU controller want to assign the flow rules to raspi 2 to relay the
> data from raspi 3 to gateway 1. So that raspi 3 can be connected to the

I'm not sure this objective is achievable sorely with flows, but let's
go on.

> gateway 1 through the route of raspi 3 - raspi 2 - gateway 1. But I cannot
> assign the flow rules to raspi 2 when raspi 1 is failed. Is there any way
> to assign the flow rules to other node when the node is failure. Any
> suggestions are warmly welcomed.

What errors do you get?
I assume the openflow controller on gateway1 controls raspi 1 and 2.
Isn't it a matter of just monitoring aliveness of raspis and sending
flowmods to raspi 2 when necessary?

--
IWAMOTO Toshihiro


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