1) The document discusses CloudStack networking, including physical networking, storage networking, and guest networking. It describes how different hypervisors map CloudStack network labels to hypervisor interfaces.
2) Storage networks can use a separate physical network for primary storage traffic to isolate it from management and secondary storage traffic.
3) Multiple guest networks allow for isolated and shared guest networks, which have different advantages - isolated networks provide security and isolation while shared networks have higher performance.
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CloudStack networking
1. The Why, When and wHow
of CloudStack Networking
Paul Angus
VP Technology & Cloud Architect
paul.angus@shapeblue.com
Twitter: @CloudyAngus
2. @ShapeBlue
Who am I
VP Technology & Cloud Architect with
ShapeBlue
Worked with CloudStack since 2.2.13
Specialising in deployment of CloudStack
and surrounding infrastructure
USP, Georgian Ministry of Justice, Orange,
TomTom, PaddyPower, Ascenty, BSkyB
About Me
4. @ShapeBlue
“ShapeBlue are expert builders of public &
private clouds. They are the leading global
independent CloudStack / CloudPlatform
integrator & consultancy”
About ShapeBlue
5. @ShapeBlue
The What, When and wHow
Physical networking
Storage networks
Guest networking
Basic networking
Advanced networking
CloudStack Networking
8. @ShapeBlue
Physical networks are described (per-zone)
through two constructs:
‘Physical Networks’
‘Network labels’
Physical Networking
9. @ShapeBlue
Physical Networks
Confusingly named – may be better to call them Network
types or groups.
Physically independent network interfaces don’t have to be
different ‘physical networks’ unless:
They use different separation techniques VLAN vs VXLAN
You have multiple physical guest networks
Physical Networking
11. @ShapeBlue
A word or two on Blade Chassis
16 hosts sharing a 10Gb connection for storage and mgmt ?
Often chassis present virtual interfaces, using these enable
bandwidth control
Some chassis present virtual interfaces on a per-uplink
module basis. These still need to be bonded by the
hypervisor
Physical Networking
12. @ShapeBlue
Network Labels
Describe how CloudStack’s network types
map to the hypervisor naming of
interfaces/bonds.
Leaving as ‘default’ not advised
How the labels are used is subtlety
different between hypervisors
Physical Networking
19. @ShapeBlue
XenServer/KVM with (secondary) Storage VLAN
• When adding into CloudStack, Storage VLAN is UNTAGGED
so that it is not tagged twice.
• Can co-exist with ESXi, but must be in different pods so that
storage network port group can be tagged with VLAN.
Example Mappings
26. @ShapeBlue
Multiple Physical Guest Networks
Guest iSCSI
Secure backend services
A number of use cases have been replaced by VPC private
gateway
Guest Networking
28. @ShapeBlue
Isolated networks are NATed and therefore (direct) inbound
routing is not possible.
This makes PaaS problematic
Isolated network VR can be a bottleneck and or perceived as
a weak link.
Isolated vs Shared
29. @ShapeBlue
Shared networks can run at physical wire speeds.
VMs in shared networks can easily be routed to.
Built-in CloudStack integrated network services not available
Isolated vs Shared
30. @ShapeBlue
OSPF and Routed VPC
Coming Soon…
10.1.1.0/24
.1
Other
Networks
VR1-VPC
Tier 1 Tier X
Virtual instances
Tier 1 Tier X
.1 .1 .1 .1
BGP
Backbone
.2
OSPF Area 0
Other
Networks
Super CIDR
Ex: 10.10.10.0/
23
Subnet 10.10.10.0/24 Subnet 10.10.11.0/24
VPC VR advertise routes
(redistribute connected and
static) via OSPF and receiving
routes from another's VPC
VRs and default route from
Border Routers
Super CIDR
Ex: 10.20.20.0/
23
Subnet 10.20.20.0/24 Subnet 10.20.21.0/24
Virtual instances Virtual instances Virtual instances
.1
0
.1
1
VR2-VPC
CORE-
ROUTER1
CORE-
ROUTER2
Other
Networks
33. The Why, When and wHow
of CloudStack Networking
Paul Angus
VP Technology & Cloud Architect
paul.angus@shapeblue.com
Twitter: @CloudyAngus
Notes de l'éditeur
What kind of uses are we talking about
That’s the generalities
Now for the specifics
That’s the generalities
Now for the specifics
Facts from http://www.tradermedia.co.uk/media-centre/key-facts.aspx and annual report 2012
CloudStack environment is still in development
Note MASSIVE scale