cloudstack-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Vadim Kimlaychuk <Vadim.Kimlayc...@Elion.ee>
Subject Re: Cloudstack physical network on xenserver
Date Fri, 03 Jul 2015 14:00:58 GMT
Hi,

Cloudstack does the following:

1. When you configure physical networking of you cloud this should match name of the physical
network name-label on you XenServer host (let me say guest-net).  You can check it with "xe
network-list"
2. When you configure guest networks CS asks you for range of VLANs it will configure by itself.
Let me say you put 500-600
3. When first guest comes, CS registers new VLAN taking ID randomly (upon first VM is registered).
You can check it by "xe vlan-list" on your host.  CS connects VLAN ID to guest network uuid
and physical network uuid. 

To work properly you should configure all guest VLANs on your switch and enable VLAN ID transitions
from one to another.  For instance if your public VLAN id = 5 and guest VLAN ID=505 you must
change it while routing from one VLAN to another.  Of course if you remove client from Cloudstack
-- you should see that corresponding VLAN is removed from you host automatically

Vadim
________________________________________
From: Fedi Ben Ali <ben.ali.fedi1@gmail.com>
Sent: Friday, July 3, 2015 15:11
To: users@cloudstack.apache.org
Subject: Re: Cloudstack physical network on xenserver

Hi,

Yes i'm working on an advanced zone, each one of the clients have it's own
network so his own virtual router. When i delete the clients accounts i do
remove all his ressources so the virtual router.

on my switches the public network is tagged.

is there any possibility that cloudstack is removing the network
configuration on my xenservers ?
because i dont know the event that is tiggring this action so i can't
troubelshoot properly.

Thx.


2015-07-03 9:35 GMT+01:00 Vadim Kimlaychuk <Vadim.Kimlaychuk@elion.ee>:

> That does not brake entire logic :)
>
> Vadim.
>
> -----Original Message-----
> From: Remi Bergsma [mailto:remi@remi.nl]
> Sent: Friday, July 03, 2015 11:24 AM
> To: users@cloudstack.apache.org
> Subject: Re: Cloudstack physical network on xenserver
>
> Hi Vadim,
>
> That depends on your upstream provider. In our case, we get a VLAN from
> upstream provider and send tagged packets (they take care of it from
> there). So, in that case the VLAN tagging is handy/required. If you need to
> send it untagged, then tagging it wont’t work indeed.
>
> Regards,
> Remi
>
> > On 3 jul. 2015, at 09:08, Vadim Kimlaychuk <Vadim.Kimlaychuk@Elion.ee>
> wrote:
> >
> > Hello Fedi,
> >
> >       Public traffic must me "untagged" because the next switch after
> yours will not recognize it if it is tagged.  You need to untag public
> traffic before sending out. To route internally - you need to tag it.   I
> also have public traffic tagged internally and assign tag on ingress and
> remove tag on egress traffic.  This is done by switch configuration.
> >
> >       VLAN is used for isolation.  You can have same ip ranges on the
> same physical networks without networks to be overlapped.
> >
> > Vadim.
> >
> > -----Original Message-----
> > From: Fedi Ben Ali [mailto:ben.ali.fedi1@gmail.com]
> > Sent: Thursday, July 02, 2015 5:32 PM
> > To: users@cloudstack.apache.org
> > Subject: Cloudstack physical network on xenserver
> >
> > Hello,
> >
> > On my deploiement cloudstack 4.4 and xenservers 6.2. i have configured
> multiple networks each one for a specific traffic type
> (Public,management,storage,guest).
> >
> > these networks are isolated and vlan tagged ,so on my xenservers  i have
> the 4 networks each with a specific name label and pointing to a Vlan.
> >
> > when i added the public ip range ,i did not mention the VLAN number of
> my public network.
> >
> > Can this cause issues or not ?
> >
> > and what is the pupose of putting the vlan number on the ip ranges ?
> >
> > Thx.
>
>

Mime
View raw message