vCloud Networking

Understanding the Design

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The Basic Concepts

• External Networks• Organization Networks• vApp Networks• Network Pools– Port-group– VLAN– vCD-NI

External Networks

• Identified by a vSphere Portgroup• Must be created outside of vCD

Organization Networks

• Organizations describe a tenant• Networks that belong to an Organization• 3 Types of Org Network Connections• Internal and External• Created by the cloud admin

vApp Networks

• Networks available to a single vApp• Ability to Fence• vApp Networks connect to Organization’s

Internals or External Networks

Network Pools

• Giving the users control of L2• Creating the multi-tenant infrastructure• Declaring what L2 networks are available for

consumption• 3 Different kinds of Network pools

Port-Group Backed

• Pre-provisioned port-groups• Non-automated• vSphere Standard Switches• Currently Nexus 1000v, until 1.5 GA release

VLAN Backed

• Automated provisioning• Specify a range of VLANs• Network re-use

vCD-NI Backed

• vCloud Director Network Isolation• Mac-in-mac encapsulation• Breaking the 4094 VLAN barrier

More Resources

• vCloud Director Networking for Dummies– http://it20.info/2010/09/vcloud-director-networki

ng-for-dummies/• Mike D’s 2010 & 2011 VMworld Presentations– vCloud Networking Finally Explained

The Physical Design

• 1Gb vs 10Gb• X NICs vs Y NICs• Service Offering• The Pod Approach

External Design

• How many external networks are needed?

Enterprise

Service Provider

Service Provider

Enterprise or Service Provider

External Network Creation

• Create portgroup before vCD external creation• Use Ephemeral binding• Assign a VLAN• Layer 2 or Layer 3• IP Address Range with Gateway• DNS• Load Balancing & Failover

External Network Creation

External Network Creation

External Network Creation

External Network Creation

External Network Creation

External Network Creation

Network Pool Design

• Which type of network pool?• Port-group vs VLAN vs vCD-NI

vCD-NI

• VMware’s proprietary protocol• How many?• VLAN• L2 or L3?

vCD-NI and MTU

• MTU > 1600– Network Equipment– vNetwork Distributed Switch– vCloud

vCD-NI and MTU

• MTU > 1600– vCloud

vCD-NI Allocations

• Quotas per organization

Different Organization Networks

• Multiple Org vDCs can be in one Organization• Multiple Org vDCs can share Org Networks in

one Organization

Internal & External Routed

Internal & External Routed

Internal and External Direct

Internal and External Direct

Scalability

Scalability

Scalability