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From Jeffrey McGovern <jeffrey.mcgov...@sungard.com>
Subject Re: Configuring static routes on VM
Date Thu, 07 Feb 2013 21:53:19 GMT
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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