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From Chip Childers <chip.child...@sungard.com>
Subject Re: Configuring static routes on VM
Date Thu, 07 Feb 2013 22:00:18 GMT
Hugo - Mind taking a look at the questions that Jeff has?

On Thu, Feb 07, 2013 at 04:53:19PM -0500, Jeffrey McGovern wrote:
> So after more research I found this
> article<https://cwiki.apache.org/CLOUDSTACK/inter-vlan-routing.html>
> which
> is where we are trying to get to in terms of our network design.  As I was
> reading through the Inter-VLAN routing link it mentions the following:
> 
> "In vpcOffering you define which services you want to support in the VPC.
> When new Guest network is added to the VPC, we should check if its set of
> services/providers are within VPC service/providers list. As
> sourceNatService is required by the VPC, even when its not specified in
> serviceProviders list, we add it automatically (with the VpcVirtualRouter
> provider). Only VpcVirtualRouter can play a provider role inside the VPC."
> 
> 
> I have an additional question which is if we intend to use an overlay
> network and the overlay vendor is implemented as a network service provider
> can we use the overlay in conjunction with the VpcVirtualRouter even though
> the last line of the above quote states: Only VpcVirtualRouter can play a
> provider role inside the VPC?
> 
> 
> The source of my confusion comes from slide 12 - 16 of this
> deck<http://www.slideshare.net/hugotrippaers/cloudstack-nvp-integration>
> where
> Nicira appears to be implemented as a Service Provider which would appear
> to not allow the two to coexist.
> 
> 
> 
> Jeffrey S. McGovern
> SunGard Availability Services
> 401 N. Broad Street - Mezzanine
> Philadelphia, PA 19108
> Desk: 215-446-2722
> Fax: 215-408-4700
> jeffrey.mcgovern@sungard.com
> 
> 
> On Wed, Feb 6, 2013 at 10:01 AM, Jeffrey McGovern <
> jeffrey.mcgovern@sungard.com> wrote:
> 
> > Geoff,
> > Kinda sort of what I am looking for but can you help me understand this
> > statement taken from
> > http://incubator.apache.org/cloudstack/docs/en-US/Apache_CloudStack/4.0.0-incubating/html/Installation_Guide/configure-vpc.html#add-gateway-vpc
> > ?
> >
> > "A private gateway can be added by the root admin only. The VPC private
> > network has 1:1 relationship with the NIC of the physical network. No
> > gateways with duplicated VLAN and IP are allowed in the same data center.?
> >
> >
> > Given a multi-tenant environment does this actually imply that this
> > network must be bound to a physical interface? Or does this mean that there
> > must be a physical interface dedicated to this type of traffic which can
> > then be carved up among multiple tenants based on the providers model?
> >
> >
> >
> > Jeffrey S. McGovern
> > SunGard Availability Services
> > 401 N. Broad Street - Mezzanine
> > Philadelphia, PA 19108
> > Desk: 215-446-2722
> > Fax: 215-408-4700
> > jeffrey.mcgovern@sungard.com
> >
> >
> > On Tue, Feb 5, 2013 at 7:41 PM, Geoff Higginbottom <
> > geoff.higginbottom@shapeblue.com> wrote:
> >
> >> Hi Jeff,
> >>
> >> If I have interpreted your requirements correctly, you want to send
> >> traffic from the Guest Instances to a network which is probably within the
> >> Data Centre and not on the internet.  The Default Gateway for the Guest VMs
> >> is the VPC Virtual Router, and the Gateway used by the VPC Virtual Router,
> >> is the Public Network Gateway.
> >>
> >> If you want to direct traffic destined for a particular CIDR, you can
> >> configure the VPC Virtual Router to route the traffic via a different
> >> Gateway by using the 'Private Gateway' feature.
> >>
> >> Imagine you have a set of physical servers running in the same DC, create
> >> a VPC Private Gateway, and then create the Routing Rules for the required
> >> CIDR, specifying the alternate Gateway IP which has L3 connectivity to the
> >> physical servers.  This will add a new Virtual Interface onto the VPC
> >> Virtual Router, and create the routes so traffic is sent via the alternate
> >> Gateway rather than the Public Network Gateway.  You will obviously need to
> >> update the routing rules on alternate gateway so the traffic can flow back
> >> to the Guest VMs.
> >>
> >> Regards
> >>
> >> Geoff Higginbottom
> >>
> >> D: +44 20 3603 0542 | S: +44 20 3603 0540 | M: +447968161581
> >>
> >> geoff.higginbottom@shapeblue.com
> >>
> >> -----Original Message-----
> >> From: Chip Childers [mailto:chip.childers@sungard.com]
> >> Sent: 05 February 2013 19:12
> >> To: cloudstack-users@incubator.apache.org
> >> Subject: Re: Configuring static routes on VM
> >>
> >> On Tue, Feb 05, 2013 at 10:47:15AM -0800, Chiradeep Vittal wrote:
> >> > We could enhance the CloudStack API to support DHCP options per subnet.
> >> > One DHCP option could be static routes.
> >> >
> >>
> >> +1 to that...  Jeff, want to open a feature request [1] for this?
> >>
> >> -chip
> >>
> >> [1] https://issues.apache.org/jira/browse/CLOUDSTACK
> >>
> >> > On 2/5/13 10:06 AM, "Chris Sears" <chris.x.sears@sungard.com> wrote:
> >> >
> >> > >Hi Jeff,
> >> > >
> >> > >CloudStack currently does all in-guest network configuration via DHCP
> >> > >and, as far as I can tell, no DHCP options are being set that would
> >> > >push static routes.
> >> > >
> >> > >If you have a VM with multiple NICs, the DHCP server will hand out
> >> > >IPs to each of them, while trying not to confuse the guest about the
> >> > >default gateway. In an earlier discussion, it was mentioned that this
> >> > >can be challenging due to differences in DHCP client of each guest
OS:
> >> > >http://markmail.org/message/a5nwds7emxxix3ux
> >> > >
> >> > > - Chris
> >> > >
> >> > >On Tue, Feb 5, 2013 at 9:29 AM, Chip Childers
> >> > ><chip.childers@sungard.com>
> >> > >wrote:
> >> > >> On Mon, Feb 4, 2013 at 2:59 PM, Jeffrey McGovern
> >> > >> <jeffrey.mcgovern@sungard.com> wrote:
> >> > >>> Hello,
> >> > >>> I was wondering if there is a way to configure static routes
on a
> >> > >>>guest VM  after it has been provisioned via Cloudstack?
> >> > >>
> >> > >> Jeff,
> >> > >>
> >> > >> It may help if you provide a little more context to the question
to
> >> > >> help folks understand what you're looking to do.
> >> > >>
> >> > >> -chip
> >> > >>
> >> >
> >> >
> >>
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