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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks Zongpeng for your comments. Below my replies. Jordi --------- Hi, Jordi Some comments about the draft for discussion. The service instances should be deployed firstly, and then the instance sel= ection would take place only if multiple instances exists for the client re= quest. [JRG] Correct. Note also that at selection time, even if there is no se= rvice replication, the application can still benefit from exposure of commu= nication information. For instance, if a host running an application has mu= ltiple air interfaces (5G, 4G, Wi-Fi), it can decide which one to use to co= nnect to the service instance based on end-to-end bandwidth and latency inf= ormation for each interface. In the deployment procedure, the computer information is more detailed, and= I think that only the operators that has the right are able to obtain the = information. [JRG] In a data center, service providers can have knowledge of the ava= ilable compute resources in a certain region to help them make deployment d= ecisions. At the edge, service providers are also in need to have some leve= l of compute information for the same reason. The process in the Kubernets should be similar. They can manage the cloud, = select a node/place, and deploy a POD. I notice that in table 1, it says, in the service placement, service provid= ers need compute and communication information. However, the communication = information perhaps is not E2E, such as latency, unless we know where the c= lient is connected into the network. Perhaps, it means the "as well as band= width capacity for forwarding the traffic generated in and out of the corre= sponding data center." mentioned in the first Section? [JRG] Correct. For the service placement case, communication refers to = endpoint (and not end-to-end) metrics such as incoming/outgoing bandwidth. In the service instance selection procedure, it can be decided in the centr= alized server such as the ALTO server, or in the CATS ingress. In the forme= r case, the centralized server (decision point) can be aware of more inform= ation, e.g. multiple metrics, and make a decision. In the later case, which= is called on-path decision, we perhaps need simpler metrics, which is stil= l under working. [JRG] I agree. ---------- --_000_SN6PR02MB53750D4050F8BBF79E985C35F6A0ASN6PR02MB5375namp_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Thanks Zongpeng for your comments. Below my repl= ies.

Jordi

---------

Hi, Jordi 

Some comments about the draft = for discussion.


The service instances should b= e deployed firstly, and then the instance selection would take place o= nly if multiple instances exists for the client request.


    [JRG] Correct. N= ote also that at selection time, even if there is no service replication, t= he application can still benefit from exposure of communication information. For instance, if a host running an application has multiple a= ir interfaces (5G, 4G, Wi-Fi), it can decide which one to use to connect to= the service instance based on end-to-end bandwidth and latency information= for each interface.

 

In the deployment procedure, t= he computer information is more detailed, and I think that only the operato= rs that has the right are able to obtain the information. 


    [JRG] In a data = center, service providers can have knowledge of the available compute resou= rces in a certain region to help them make deployment decisions. At the edge, service providers are also in need to have some le= vel of compute information for the same reason.


The process in the Kubernets s= hould be similar. They can manage the cloud, select a node/place, and deplo= y a POD.

 

I notice that in table 1, it s= ays, in the service placement, service providers need compute and communica= tion information. However, the communication information perhaps is not E2E, such as latency, unless we know where the client is co= nnected into the network. Perhaps, it means the "as well as bandw= idth capacity for forwarding the traffic generated in and out of the corres= ponding data center." mentioned in the first Section?


    [JRG] Correct. F= or the service placement case, communication refers to endpoint (and not en= d-to-end) metrics such as incoming/outgoing bandwidth.

 

In the service instance select= ion procedure, it can be decided in the centralized server such as the= ALTO server, or in the CATS ingress. In the former case, the centralized server (decision point) can be aware of= more information, e.g. multiple metrics, and make a decision. In the lat= er case, which is called on-path decision, we perhaps need simpler metrics,= which is still under working.


    [JRG] I agree.

        
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