Skip to content

Latest commit

 

History

History
44 lines (35 loc) · 2.96 KB

expressroute-gateway-performance-include.md

File metadata and controls

44 lines (35 loc) · 2.96 KB
Raw
title description services author ms.service ms.topic ms.date ms.author ms.custom
include file
include file
expressroute
duongau
azure-expressroute
include
07/09/2024
duau
include file

The following tables provide an overview of the different types of gateways, their respective limitations, and their expected performance metrics. These numbers are derived from the following testing conditions and represent the max support limits. Actual performance may vary, depending on how closely traffic replicates these testing conditions.

Testing conditions

Gateway SKU Traffic sent from on-premises Number of routes advertised by gateway Number of routes learned by gateway
Standard/ERGw1Az 1 Gbps 500 4000
High Performance/ERGw2Az 2 Gbps 500 9,500
Ultra Performance/ErGw3Az 10 Gbps 500 9,500
ErGwScale (per scale unit) 1 Gbps 500 4,000

Note

ExpressRoute can facilitate up to 11,000 routes that spans virtual network address spaces, on-premises network, and any relevant virtual network peering connections. To ensure stability of your ExpressRoute connection, refrain from advertising more than 11,000 routes to ExpressRoute.

Performance results

This table applies to both the Azure Resource Manager and classic deployment models.

Gateway SKU Mega-Bits per second Packets per second Supported number of VMs in the virtual network 1 Flow count limit
Standard/ERGw1Az 1,000 100,000 2,000 200,000
High Performance/ERGw2Az 2,000 200,000 4,500 400,000
Ultra Performance/ErGw3Az 10,000 1,000,000 11,000 1,000,000
ErGwScale (per scale unit) 1,000 100,000 2,000 100,000 per scale unit

1 The values in the table are estimates and vary depending on the CPU utilization of the gateway. If the CPU utilization is high and the number of supported VMs gets exceeded, the gateway will start to drop packets.

Important

  • Application performance depends on multiple factors, such as end-to-end latency, and the number of traffic flows the application opens. The numbers in the table represent the upper limit that the application can theoretically achieve in an ideal environment. Additionally, Microsoft performs routine host and OS maintenance on the ExpressRoute Virtual Network Gateway, to maintain reliability of the service. During a maintenance period, the control plane and data path capacity of the gateway is reduced.
  • During a maintenance period, you may experience intermittent connectivity issues to private endpoint resources.
  • ExpressRoute supports a maximum TCP and UDP packet size of 1400 bytes. Packet size larger than 1400 bytes will get fragmented.
  • Azure Route Server can support up to 4000 VMs. This limit includes VMs in virtual networks that are peered. For more information, see Azure Route Server limitations.