Lumen Cloud Connect to Microsoft Azure with CISCO routers

Updated by Gavin Lai on Jan 27, 2022
Article Code: kb/1596

In this article:

Overview

The purpose of this document is to provide samples of Cisco IOS router configuration with Lumen Cloud connect to Azure ExpressRoute. Information contained is provided to serve as a supplement to Cisco and Microsoft documentation linked throughout this document. Users should check the provided links to obtain the most up-to-date information and for more details pertaining to Cisco and Microsoft processes.

Audience

Users has ordered Lumen Cloud Connect to connect to their Azure environment.

Prerequisites

Lumen Cloud Connect is ordered and with access to Azure Portal with the right permission. Administrative access to the Cisco router is required.
The customer must have equipment capable of 802.1ad (Q-in-Q) VLAN tagging and must have the ability to configure such.

What is Azure ExpressRoute

Please refer to What is ExpressRoute knowledge article.

Lumen Cloud Connect to Microsoft Azure

cloudconnect-azure-evpl

Lumen Cloud Connect with Redundant UNI on a single ExpressRoute

azure-expressroute-dualuni
azure-peering-private-public

Sample Cisco configuration for this Setup

Based on the screenshot above, the VLAN ID are as follows:

  • Azure Private peering VLAN ID 300
  • Azure Microsodft peering VLAN ID 400
  • Primary EVC VLAN ID 100
  • Secondary EVC VLAN ID 200

The following is a sample configuration for Cisco router, please see Azure and Cisco documentation for further references.

‘Router A
‘Primary EVC VLAN – 100 – Lumen
‘Private Peering – VLAN 300 - Azure portal
‘MSFT Peering – VLAN 400 - Azure portal

interface GigabitEthernet0/1.100300
  encapsulation dot1Q 100 second-dot1q 300 ‘Azure Private primary peer
  description "Cloud Connect"
  ip address xxx.xxx.xxx.xxx 255.255.255.252

interface GigabitEthernet0/1.100400
  encapsulation dot1Q 100 second-dot1q 400 ‘MSFT primary peer
  description "Cloud Connect"
  ip address xxx.xxx.xxx.xxx 255.255.255.252

‘Router B
‘Secondary EVC VLAN – 200 - Lumen
‘Private Peering – VLAN 300 - Azure portal
‘MSFT Peering – VLAN 400 - Azure portal

interface GigabitEthernet0/1.200300
  encapsulation dot1Q 200 second-dot1q 300 ‘Azure Private secondary peer
  description "Cloud Connect"
  ip address xxx.xxx.xxx.xxx 255.255.255.252

interface GigabitEthernet0/1.200400
  encapsulation dot1Q 200 second-dot1q 400 ‘MSFT secondary peer
  description "Cloud Connect"
  ip address xxx.xxx.xxx.xxx 255.255.255.252

Additional Azure ExpressRoute and Lumen Cloud Connect Resources

Please refer to the What is ExpressRoute Knowledge Article for additional Azure ExpressRoute resources.
For further information on Lumen Cloud Connect, please refer to product readiness page

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