Thank you, Miroslav.
On Thu, May 22, 2014 at 4:19 PM, Miroslav Anashkin <[email protected]>wrote: > But GRE encapsulation decreases speed of VMs' communication and decreases > CPU utilization of the Compute and Controller nodes. > Correction: > Increases CPU utilization. > > > On Thu, May 22, 2014 at 11:24 AM, Andrey Danin <[email protected]>wrote: > >> Nova-network is a simple legacy network manager. It can operate with >> predefined Private IP spaces only. >> If you don't want to split your VMs to an isolated groups (tenants) you >> can choose Nova-network with FlatDHCP. In this case you will have one big >> tenant for all VMs. >> If you want use multiple tenants and all of them contain approximately >> the same number of VMs you can use Nova-network with VLANManager. In this >> case the number of the tenants will be predefined and all the tenants will >> have equal size of Private IP space. You must decide about these two >> numbers (max number of tenants and Private IP space size) before starting >> deployment. Also you must set up appropriate VLANs on your underlying >> network equipment. >> >> Neutron is a modern and more complicated network manager. It can not only >> separate tenants but decrease requirements for underlying network (physical >> switches and topology) and gives a great flexibility in Private IP spaces >> manipulation. You can create Private IP spaces with different size and >> manipulate them on the fly. >> Neutron with VLAN like Nova-network with VLANManager requires a >> predefined max number of tenants value and underlying network equipment >> configuration. >> With Neutron with GRE you are not restricted with max number of VLANs and >> you can spawn a realy huge number of tenants. But GRE encapsulation >> decreases speed of VMs' communication and decreases CPU utilization of the >> Compute and Controller nodes. So if don't need realy fast interconnections >> between VMs, don't want to predetermine max number of tenants, and don't >> want to configure your network equipment you can choose Neutron + GRE. >> >> >> On Wed, May 21, 2014 at 9:41 AM, Meg McRoberts >> <[email protected]>wrote: >> >>> Does anyone have notes about "considerations" for choosing >>> between nova-network, neutron, and the two topologies each >>> supports? >>> >>> Similarly, what can we tell people about choosing between CentOS >>> and Ubuntu for the host OS on the nodes? >>> >>> I'm trying to do a quick save on the "Planning Guide" for 5.0. I'm >>> sure we can improve on everything when we have more time... >>> >>> Thanks again, >>> Meg >>> >>> -- >>> Mailing list: https://launchpad.net/~fuel-dev >>> Post to : [email protected] >>> Unsubscribe : https://launchpad.net/~fuel-dev >>> More help : https://help.launchpad.net/ListHelp >>> >>> >> >> >> -- >> Andrey Danin >> [email protected] >> skype: gcon.monolake >> >> -- >> Mailing list: https://launchpad.net/~fuel-dev >> Post to : [email protected] >> Unsubscribe : https://launchpad.net/~fuel-dev >> More help : https://help.launchpad.net/ListHelp >> >> > > > -- > > *Kind Regards* > > *Miroslav Anashkin**L2 support engineer**,* > *Mirantis Inc.* > *+7(495)640-4944 (office receptionist)* > *+1(650)587-5200 (office receptionist, call from US)* > *35b, Bld. 3, Vorontsovskaya St.* > *Moscow**, Russia, 109147.* > > www.mirantis.com > > [email protected] > > -- Andrey Danin [email protected] skype: gcon.monolake
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