Hi， Alec. Also cc the CNTT RI WS. What you mentioned is very important. Within China Mobile, we are developing our own tools to automaticlly configure the TOR accross different vendors. I have to say this is a hard work since the TOR from different vendors varies a lot. But it really worth the time as what you point out, this is the main area where human errors accor. For CNTT and OPNFV, currently the only active installer is airship. So I guess we will rely on that. Sridhar and the rest of the team is now trying the ariship installer out in POD 10. We are also trying to evolve the installer discription file to include network info, and as you said define HW configuration. You can see the attached PR for more details about this. https://github.com/cntt-n/CNTT/pull/535
中国移动研究院 网络与IT技术研究所 付乔 15901025951 From: Alec via Lists.Opnfv.Org Date: 2019-11-14 23:58 To: Rao, Sridhar CC: opnfv-tech-discuss Subject: Re: [opnfv-tech-discuss] RI Lab Infra. Discussion Hi Sridhar [+tech discuss list] From my knowledge, very few NFVi installers know how to configure the TOR(s) and instead just assume that some admin will go and configure the TORs in a way that is compatible with the installer’s own networking blueprint – this is one of the main areas were human errors occur during installation as there can be hundreds of cables to wire manually and as many ports to configure on the TORs. I know at least one (commercial) that does it but it only supports very specific model of TOR and very specific encaps/overlays. My comment to engage the installer team was more related to the wiring design between TOR(s) and servers that make up an openstack platform, which are of predominant importance when it comes to HW configuration. Any openstack installer will have to create a networking blueprint that will dictate how many TORs and how many physical interfaces are needed and what kind of traffic each will carry. Even with simpler VLAN deployment, there are multiple openstack networks to map on physical interfaces and/or VLANs with possibility of VLAN trunking and HA. It is clearly recommended to define the RI HW configuration with proper consultation with the installer team (this includes storage configuration as well as I mentioned in the wiki). As I did not follow on CNTT meetings, I’m not sure which OPNFV team is in charge of installing openstack on the RI and what kind of installer it is. Thanks Alec From: "Rao, Sridhar" <[email protected]> Date: Wednesday, November 13, 2019 at 6:51 PM To: "Alec Hothan (ahothan)" <[email protected]> Subject: RI Lab Infra. Discussion Hello Alec, I was reading your points in https://wiki.opnfv.org/display/INF/CNTT+RI+Lab+Infrastructure+Discussion I fully agree with importance of TOR configurations – may I say, underlay network configuration. You mention in multiple places, that this should be done by Installers. Can you please point me to an installer that can do this today. It would be very helpful. Today, in Intel Pods – the underlay network (the type of networks, the IP plan, VLANs and switch configuration) -Ex: Pod 10 (https://wiki.opnfv.org/display/pharos/Intel+POD10) – is setup by Intel team itself. Installer comes into picture only after this is set. I have not seen any installers which can also perform thoses step that Intel team is doing. Cheers, Sridhar
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