Microsoft Azure ExpressRoute.pdf

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Microsoft Azure ExpressRoute
Michael Washam
Summary:
Microsoft Azure ExpressRoute makes it easy to establish dedicated and private circuits
between your data center and Microsoft Azure. ExpressRoute connections do not go over the public
Internet and offer more reliability, faster speeds, lower latencies, and higher security than typical
connections over the Internet. This guide explains ExpressRoute and its uses, compares provider models,
and walks you through the workflow and deployment steps.
Category:
Guide
Applies to:
Microsoft Azure
Source:
ExpressRoute Technical Overview |
Source Content
E-book publication date:
[July 2014]
For more titles, visit the
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Technologies.
Copyright © 2014 by Microsoft Corporation
All rights reserved. No part of the contents of this book may be reproduced or transmitted in any form or by any means
without the written permission of the publisher.
Microsoft and the trademarks listed at
http://www.microsoft.com/about/legal/en/us/IntellectualProperty/Trademarks/EN-US.aspx are trademarks of the
Microsoft group of companies. All other marks are property of their respective owners.
The example companies, organizations, products, domain names, email addresses, logos, people, places, and events
depicted herein are fictitious. No association with any real company, organization, product, domain name, email address,
logo, person, place, or event is intended or should be inferred.
This book expresses the author’s views and opinions. The information contained in this book is provided without any
express, statutory, or implied warranties. Neither the authors, Microsoft Corporation, nor its resellers, or distributors
will be held liable for any damages caused or alleged to be caused either directly or indirectly by this book.
Microsoft Azure ExpressRoute
Contents
Microsoft Azure ExpressRoute ...................................................................................................................... 3
Introduction to Microsoft Azure ExpressRoute ............................................................................................ 4
How does ExpressRoute help? ...................................................................................................................... 4
Network Privacy ........................................................................................................................................ 4
Reduces Costs
4
Hybrid Applications ................................................................................................................................... 5
Cross Region Connectivity......................................................................................................................... 5
Consistent Network Performance ............................................................................................................ 5
Comparing ExpressRoute Provider Models .................................................................................................. 6
Exchange Provider Overview .................................................................................................................... 6
Network Service Provider Overview ......................................................................................................... 6
Choosing a Provider .................................................................................................................................. 7
Understanding Availability ........................................................................................................................ 7
Identifying Provider Locations and Capabilities........................................................................................ 7
Private Access to Microsoft Azure ................................................................................................................ 8
Deploying ExpressRoute through a Network Service Provider (Telco) ......................................................... 9
Contacting your Network Service Provider............................................................................................... 9
Deploying ExpressRoute through an Exchange Provider (IXP) ................................................................... 10
Contacting Your Exchange Provider ........................................................................................................ 10
Configuring Routing with an Exchange Provider .................................................................................... 11
Routing IP Prefixes .................................................................................................................................. 11
Autonomous System Number................................................................................................................. 12
Configuring Border Gateway Protocol (BGP) Peering............................................................................. 12
Virtual Network Configuration.................................................................................................................... 13
Specifying Address Spaces ...................................................................................................................... 13
Linking a Virtual Network to an ExpressRoute Circuit ............................................................................ 15
Connecting Multiple Virtual Networks to the Same Circuit.................................................................... 15
Example Virtual Network to Virtual Network Configuration .................................................................. 16
Compatibility ........................................................................................................................................... 16
Upgrading an Existing Circuit .................................................................................................................. 16
Migrating Virtual Networks with Site to Site Gateways to ExpressRoute .............................................. 16
Delete the Existing Gateway ............................................................................................................... 16
Resize the Existing Gateway Subnet ................................................................................................... 17
Enable ExpressRoute on the Gateway ................................................................................................ 17
Create the Gateway and Link the Virtual Network to ExpressRoute .................................................. 18
Securing ExpressRoute ................................................................................................................................ 19
Firewalls and Security Appliances ........................................................................................................... 19
Securing External Endpoints ................................................................................................................... 19
Using Access Control Lists ....................................................................................................................... 20
Removing an ExpressRoute Circuit ............................................................................................................. 21
Summary ..................................................................................................................................................... 21
Introduction to Microsoft Azure ExpressRoute
Microsoft Azure ExpressRoute makes it easy to establish dedicated and private circuits between your
data center and Microsoft Azure. Your existing infrastructure can be located on-premises in your own
data center or co-located in one of several participating provider locations. ExpressRoute allows you to
extend your infrastructure to Microsoft Azure by providing private, reliable, high speed connectivity
between you and the cloud.
With ExpressRoute your circuit is isolated using industry standard VLANs to allow private, secure access
to resources deployed in Microsoft Azure Virtual Networks and also to provide connectivity to Microsoft
Azure public services.
How does ExpressRoute help?
Network Privacy
Connectivity between your on-premises infrastructure and infrastructure hosted in Microsoft Azure is
private and secure through your ExpressRoute circuit. Your traffic never traverses the public Internet
when connecting to your own virtual machines or even connecting to other Microsoft Azure public
services such as Storage and SQL Database through ExpressRoute.
Reduces Costs
If you have bandwidth heavy applications and workloads, Microsoft Azure ExpressRoute may reduce
your bandwidth costs. Unlimited inbound traffic to Microsoft Azure is included with your circuit. If your
ExpressRoute partner falls under the network service provider billing model you also have unlimited
outbound traffic for the same price.
If your provider is an Exchange Provider, a significant amount of outbound traffic is included and any
bandwidth between ExpressRoute linked virtual networks is unlimited and included in the cost.

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