Flow based Load Balancer

[p4pe]

Hello everyone, I want to create a flow-based load balancer.

Which elements should I use to be able to implement this functionality?

Thank you

[tbarbette]

IPRewriter, like a NAT, with something like RoundRobinIPMapper for pattern

[p4pe]

Hello @tbarbette thank you for your response.

Sorry for the late reply.

To be more precise, I would like to implement something like ECMP protocol. I don't know if this can be done with Click. In my example, the VNF1 and VNF2 are simply forwarding the traffic to sink.

Thank you!

[tbarbette]

Remember ECMP is per-packet, so you would break flows and VNFs would see part of multiple flows, so they can't run NAT etc. But if you don't want something flow-aware, then you can simply use RoundRobinSwitch that will forward packets in a RR fashion.

[tbarbette]

To be flow-aware, but independent of load, you have HashSwitch. To do RoundRobin you need the aforementioned solution.

Tom

[p4pe]

Hello Tom,

Today I saw the RoundRobinSwitch element, thank you for the confirmation.

So I can have:

in1::FromDevice()
in2:FromeDevice()

out::ToDevice
out1::ToDevice

lb::RoundRobinSwitch

And the inputs of the lb will be the in1 and in2 (after they passed from IPClassifier, etc..)

Am I right?

[tbarbette]

Yes, with the usual Queue etc

[xt1234567]

Hello Tom,

Today I saw the RoundRobinSwitch element, thank you for the confirmation.

So I can have:

in1::FromDevice()
in2:FromeDevice()

out::ToDevice
out1::ToDevice

lb::RoundRobinSwitch

And the inputs of the lb will be the in1 and in2 (after they passed from IPClassifier, etc..)

Am I right?

Hello , I also want to create a per-packet load balancer, but it was a little difficult for me to implement it ,can you share the .click file? Thank you very much in advance. my email is 17305690709@163.com