On Thu, 22 Mar 2012 14:03:41 -0500 Dennis Gilmore <dennis@xxxxxxxx> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > > Hey all i asked a couple of questions of calxeda about networking on > thier arm hardware im forwarding on the attached response. if we have > more questions we can ask. Hopefully that will work. Perhaps we could do multiple 10G interfaces, I don't know how practical that will be tho. > Dennis kevin -- > Inicio del mensaje redirigido: > > Fecha: Wed, 21 Mar 2012 18:38:26 -0500 > Desde: Mark Langsdorf <mark.langsdorf@xxxxxxxxxxx> > Para: Dennis Gilmore <dennis@xxxxxxxx> > Asunto: Re: networking questions > > > On 03/20/2012 04:04 PM, Dennis Gilmore wrote: > > Hi Mark, > > > > finally sorted out email. a corrupt imap cache caused claws to > > sigbus, always fun. so to the networking question. > > > > in fedora infrastructure today we have 4 different vlans i think. > > how we see would do things would be to have a single 10g uplink > > into the network. say we had a 100 node system. > > > > we would bond all 4 vlans into the uplink, then want to setup the > > switch fabric on the system to be something like > > > > nodes 1-20 - fedora infra public vlan <where we run our proxies and > > appservers etc> > > nodes 21-40 - qa vlan for tying into the qa infrastructure > > nodes 41-100 - build vlan, where all our builders live. > > It will possible to set up a system this way. The ECMEs will have > support for VLAN tagging, and you would set up the VLAN IDs as part of > the normal process of configuring the network and fabric. The basic > process would be a sequence of IMPI and TFTP transfers to request the > node configuration files, edit them, return them to the nodes, and > commit them. You'd have to do some of that anyway just to set up > things like static IP vs DHCP. > > The network guys did have this to say specifically: > "I would like to note, that while your configuration is perfectly > valid, it may result in uneven performance. Using only one of the > four uplinks means connecting at only one point on our fabric. I > understand that 10Gb ports may be hard to come by, but four 1Gb > uplinks may provide a more even performance than a single 10Gb uplink. > > "And since you have four VLANS, if you went to four 1Gb links, you > could have your switch ports act as termini for the four VLANS and > then through our configuration interface map the network interfaces > to match your VLAN needs. In that fashion, you would not need to have > the management engine and servers add/remove VLAN tags at all." > > Hope this information helps you guys decide your provisioning plans. > > - --Mark Langsdorf > Calxeda, Inc. > > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2.0.18 (GNU/Linux) > > iEYEARECAAYFAk9rd40ACgkQkSxm47BaWffR3gCfd8UI1QszISLVI3BMf1fVUCRc > hiYAn2awU6rzBeNPBLNjH2VgC2mu2+v8 > =ZpMQ > -----END PGP SIGNATURE----- > _______________________________________________ > infrastructure mailing list > infrastructure@xxxxxxxxxxxxxxxxxxxxxxx > https://admin.fedoraproject.org/mailman/listinfo/infrastructure
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