ExpressRoute for dedicated connections in Azure - Step-by-Step Execution

Process Flow - ExpressRoute for dedicated connections

Start: Request ExpressRoute

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Provision Dedicated Circuit

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Connect On-Premises Network

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Establish Private Connection

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Configure Routing & Policies

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Use ExpressRoute for Traffic

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Monitor & Maintain Connection

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End

This flow shows how a dedicated ExpressRoute connection is requested, provisioned, connected, configured, used, and maintained.

Execution Sample

Azure

1. Request ExpressRoute circuit
2. Connect on-premises router
3. Configure BGP routing
4. Send traffic via ExpressRoute
5. Monitor connection health

This sequence shows the main steps to set up and use an ExpressRoute dedicated connection.

Process Table

Step	Action	State Change	Result
1	Request ExpressRoute circuit	Circuit requested in Azure portal	Circuit pending provisioning
2	Provision Dedicated Circuit	Azure provisions circuit with bandwidth	Circuit ready for connection
3	Connect On-Premises Router	Physical connection established	Link up between on-premises and Azure
4	Configure BGP Routing	BGP sessions established	Routes exchanged between networks
5	Send Traffic via ExpressRoute	Traffic flows over private link	Lower latency and secure connection
6	Monitor Connection Health	Alerts and metrics active	Connection stable and performant
7	End	All steps complete	ExpressRoute dedicated connection operational

💡 All steps completed successfully; dedicated ExpressRoute connection is active and ready for use.

Status Tracker

Variable	Start	After Step 1	After Step 2	After Step 3	After Step 4	After Step 5	Final
Circuit Status	None	Requested	Provisioned	Connected	Routing Configured	Active	Active
Connection Link	Down	Down	Down	Up	Up	Up	Up
Traffic Flow	None	None	None	None	None	Flowing	Flowing

Key Moments - 3 Insights

Why does the circuit status remain 'Requested' after step 1 and not immediately 'Active'?

Because after requesting, Azure needs time to provision the physical circuit before it becomes active, as shown in execution_table step 2.

What happens if BGP routing is not configured after the physical connection is up?

Traffic cannot flow properly because routes are not exchanged; execution_table step 4 shows routing configuration is essential before traffic flows.

Why is monitoring important after the connection is active?

Monitoring ensures the connection stays healthy and performs well, catching issues early as shown in execution_table step 6.

Visual Quiz - 3 Questions

Look at the execution_table, what is the circuit status after step 3?

A Requested

B Connected

C Provisioned

D Active

💡 Hint

Check the 'Circuit Status' variable in variable_tracker after Step 3.

At which step does traffic start flowing over ExpressRoute?

A Step 3

B Step 4

C Step 5

D Step 6

💡 Hint

Refer to execution_table row where 'Traffic flows over private link' is noted.

If the physical connection link stays 'Down' after step 3, what is the likely impact?

A No traffic will flow over ExpressRoute

B Circuit status will be 'Active'

C Traffic will flow normally

D BGP routing will be established

💡 Hint

Look at variable_tracker for 'Connection Link' status and its effect on 'Traffic Flow'.

Concept Snapshot

ExpressRoute provides a private, dedicated connection between your on-premises network and Azure.
Steps: Request circuit → Provision → Connect router → Configure BGP → Send traffic → Monitor.
Benefits: Lower latency, higher security, reliable bandwidth.
Requires physical connection and routing setup before use.

Full Transcript

ExpressRoute for dedicated connections involves requesting a private circuit from Azure, provisioning it, physically connecting your on-premises network, configuring routing protocols like BGP, sending traffic securely over the private link, and monitoring the connection to ensure stability and performance. Each step changes the state of the circuit and connection link, progressing from requested to active. Traffic only flows after routing is configured and the physical link is up. Monitoring helps maintain connection health.