Azure Paired Regions - HA Design

When using Azure ExpressRoute to transport production Azure workloads, the recommended configuration uses ExpressRoute circuits in both Azure regions in a Azure region pair using ExpressRoute on-ramps at each region. The solution could be a single Megaport, a pair of Megaport physical connections (either discrete or in a LAG/LACP bundle) in a single data center, or a pair of Megaport physical connections diversified across multiple data center locations.

These are the components required for creating diverse paths into an Azure paired region through Megaport in different data center locations:

Microsoft Azure

  • ExpressRoute Circuit in region 1 of the region pair
  • ExpressRoute Circuit in region 2 of the region pair
  • Virtual Network Gateway in region 1 attached to Virtual Network (vNet)
  • Virtual Network Gateway in region 2 attached to Virtual Network (vNet)

Megaport

  • 1 (or 2 in a Link Aggregation/LAG configuration) Megaport in a Megaport-enabled location
  • 1 (or 2 in a LAG configuration) Megaport in a Megaport-enabled location
  • 4 VXCs with each connecting to different Azure on-ramp locations

HA configuraton for Azure

Helpful References


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