I'm curious what the expectations are on configuration for the TOR. The LaaS project does and some basic provisioning for the switching fabric to support the VLAN scenario. It likely could be augmented to support other methods too, but it depends on the capabilities of the hardware. LaaS won't help with production deployments, but is a solution for dealing with lab setup, etc.
In terms installer configuration of the network, I'm curious if the right approach is to handle the configuration of the network / fabric, which by definition brings in all the differences between vendors and management techniques for the switches, etc. Or, if it would make more sense to focus on validation of the network setup as part of the install. For example, if the installer consumes a topology description of the network / fabric, it would seem reasonable it could very quickly check reality against that topology, and for example flag Server N, Port 2 and Port 3 as "incorrect", which could likely mean they are flipped in wiring. Or it could check for basic layer 2 connectivity between ports in the case of VLANs, etc. Cheers, Lincoln On Thu, Nov 14, 2019 at 8:30 PM fuqiao <[email protected]> wrote: > 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 <[email protected]> > *Date:* 2019-11-14 23:58 > *To:* Rao, Sridhar <[email protected]> > *CC:* opnfv-tech-discuss <[email protected]> > *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 > > > > > > _._,_._,_ > ------------------------------ > Links: > > You receive all messages sent to this group. > > View/Reply Online (#13) > <https://lists.opnfv.org/g/cntt-ref-imp/message/13> | Reply To Group > <[email protected]?subject=Re:%20Re%3A%20%5Bcntt-ref-imp%5D%20%5Bopnfv-tech-discuss%5D%20RI%20Lab%20Infra.%20Discussion> > | Reply To Sender > <[email protected]?subject=Private:%20Re:%20Re%3A%20%5Bcntt-ref-imp%5D%20%5Bopnfv-tech-discuss%5D%20RI%20Lab%20Infra.%20Discussion> > | Mute This Topic <https://lists.opnfv.org/mt/58461608/923460> | New Topic > <https://lists.opnfv.org/g/cntt-ref-imp/post> > > Your Subscription <https://lists.opnfv.org/g/cntt-ref-imp/editsub/923460> > | Contact Group Owner <[email protected]> | Unsubscribe > <https://lists.opnfv.org/g/cntt-ref-imp/leave/4657366/2058813752/xyzzy> [ > [email protected]] > _._,_._,_ > > -- *Lincoln Lavoie* Senior Engineer, Broadband Technologies 21 Madbury Rd., Ste. 100, Durham, NH 03824 [email protected] https://www.iol.unh.edu +1-603-674-2755 (m) <https://www.iol.unh.edu/>
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