Express Route Circuit Peerings - Get

Service:

ExpressRoute

API Version:

2025-03-01

Gets the specified peering for the express route circuit.

GET https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/expressRouteCircuits/{circuitName}/peerings/{peeringName}?api-version=2025-03-01

URI Parameters

Name	In	Required	Type	Description
circuitName	path	True	string	The name of the express route circuit.
peeringName	path	True	string	The name of the peering.
resourceGroupName	path	True	string	The name of the resource group.
subscriptionId	path	True	string	The subscription credentials which uniquely identify the Microsoft Azure subscription. The subscription ID forms part of the URI for every service call.
api-version	query	True	string	Client API version.

Responses

Name	Type	Description
200 OK	ExpressRouteCircuitPeering	Request successful. The operation returns the resulting ExpressRouteCircuitPeering resource.
Other Status Codes	CloudError	Error response describing why the operation failed.

Security

azure_auth

Azure Active Directory OAuth2 Flow.

Type: oauth2
Flow: implicit
Authorization URL: https://login.microsoftonline.com/common/oauth2/authorize

Scopes

Name	Description
user_impersonation	impersonate your user account

Examples

Get ExpressRouteCircuit Peering

Sample request

HTTP

GET https://management.azure.com/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/expressRouteCircuits/circuitName/peerings/MicrosoftPeering?api-version=2025-03-01

Java

/**
 * Samples for ExpressRouteCircuitPeerings Get.
 */
public final class Main {
    /*
     * x-ms-original-file:
     * specification/network/resource-manager/Microsoft.Network/stable/2025-03-01/examples/ExpressRouteCircuitPeeringGet
     * .json
     */
    /**
     * Sample code: Get ExpressRouteCircuit Peering.
     * 
     * @param azure The entry point for accessing resource management APIs in Azure.
     */
    public static void getExpressRouteCircuitPeering(com.azure.resourcemanager.AzureResourceManager azure) {
        azure.networks().manager().serviceClient().getExpressRouteCircuitPeerings().getWithResponse("rg1",
            "circuitName", "MicrosoftPeering", com.azure.core.util.Context.NONE);
    }
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Python

from azure.identity import DefaultAzureCredential

from azure.mgmt.network import NetworkManagementClient

"""
# PREREQUISITES
    pip install azure-identity
    pip install azure-mgmt-network
# USAGE
    python express_route_circuit_peering_get.py

    Before run the sample, please set the values of the client ID, tenant ID and client secret
    of the AAD application as environment variables: AZURE_CLIENT_ID, AZURE_TENANT_ID,
    AZURE_CLIENT_SECRET. For more info about how to get the value, please see:
    https://docs.microsoft.com/azure/active-directory/develop/howto-create-service-principal-portal
"""


def main():
    client = NetworkManagementClient(
        credential=DefaultAzureCredential(),
        subscription_id="subid",
    )

    response = client.express_route_circuit_peerings.get(
        resource_group_name="rg1",
        circuit_name="circuitName",
        peering_name="MicrosoftPeering",
    )
    print(response)


# x-ms-original-file: specification/network/resource-manager/Microsoft.Network/stable/2025-03-01/examples/ExpressRouteCircuitPeeringGet.json
if __name__ == "__main__":
    main()

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Go

package armnetwork_test

import (
	"context"
	"log"

	"github.com/Azure/azure-sdk-for-go/sdk/azidentity"
	"github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/network/armnetwork/v8"
)

// Generated from example definition: https://github.com/Azure/azure-rest-api-specs/blob/b24c97bfc136b01dd46a1c8ddcecd0bb5a1ab152/specification/network/resource-manager/Microsoft.Network/stable/2025-03-01/examples/ExpressRouteCircuitPeeringGet.json
func ExampleExpressRouteCircuitPeeringsClient_Get() {
	cred, err := azidentity.NewDefaultAzureCredential(nil)
	if err != nil {
		log.Fatalf("failed to obtain a credential: %v", err)
	}
	ctx := context.Background()
	clientFactory, err := armnetwork.NewClientFactory("<subscription-id>", cred, nil)
	if err != nil {
		log.Fatalf("failed to create client: %v", err)
	}
	res, err := clientFactory.NewExpressRouteCircuitPeeringsClient().Get(ctx, "rg1", "circuitName", "MicrosoftPeering", nil)
	if err != nil {
		log.Fatalf("failed to finish the request: %v", err)
	}
	// You could use response here. We use blank identifier for just demo purposes.
	_ = res
	// If the HTTP response code is 200 as defined in example definition, your response structure would look as follows. Please pay attention that all the values in the output are fake values for just demo purposes.
	// res.ExpressRouteCircuitPeering = armnetwork.ExpressRouteCircuitPeering{
	// 	ID: to.Ptr("/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/expressRouteCircuits/circuitName/peerings/MicrosoftPeering"),
	// 	Name: to.Ptr("MicrosoftPeering"),
	// 	Type: to.Ptr("Microsoft.Network/expressRouteCircuits/peerings"),
	// 	Etag: to.Ptr("W/\"b2a25b98-2e6d-4d46-87f2-089de5f6fdf9\""),
	// 	Properties: &armnetwork.ExpressRouteCircuitPeeringPropertiesFormat{
	// 		AzureASN: to.Ptr[int32](12076),
	// 		GatewayManagerEtag: to.Ptr("103"),
	// 		IPv6PeeringConfig: &armnetwork.IPv6ExpressRouteCircuitPeeringConfig{
	// 			MicrosoftPeeringConfig: &armnetwork.ExpressRouteCircuitPeeringConfig{
	// 				AdvertisedCommunities: []*string{
	// 				},
	// 				AdvertisedPublicPrefixes: []*string{
	// 					to.Ptr("3FFE:FFFF:0:CD31::/120")},
	// 					AdvertisedPublicPrefixesState: to.Ptr(armnetwork.ExpressRouteCircuitPeeringAdvertisedPublicPrefixStateValidationNeeded),
	// 					CustomerASN: to.Ptr[int32](23),
	// 					LegacyMode: to.Ptr[int32](0),
	// 					RoutingRegistryName: to.Ptr("ARIN"),
	// 				},
	// 				PrimaryPeerAddressPrefix: to.Ptr("3FFE:FFFF:0:CD30::/126"),
	// 				SecondaryPeerAddressPrefix: to.Ptr("3FFE:FFFF:0:CD30::4/126"),
	// 				State: to.Ptr(armnetwork.ExpressRouteCircuitPeeringStateEnabled),
	// 			},
	// 			LastModifiedBy: to.Ptr("Customer"),
	// 			MicrosoftPeeringConfig: &armnetwork.ExpressRouteCircuitPeeringConfig{
	// 				AdvertisedCommunities: []*string{
	// 				},
	// 				AdvertisedPublicPrefixes: []*string{
	// 					to.Ptr("123.1.0.0/24")},
	// 					AdvertisedPublicPrefixesState: to.Ptr(armnetwork.ExpressRouteCircuitPeeringAdvertisedPublicPrefixStateValidationNeeded),
	// 					CustomerASN: to.Ptr[int32](23),
	// 					LegacyMode: to.Ptr[int32](0),
	// 					RoutingRegistryName: to.Ptr("ARIN"),
	// 				},
	// 				PeerASN: to.Ptr[int64](100),
	// 				PeeringType: to.Ptr(armnetwork.ExpressRoutePeeringTypeMicrosoftPeering),
	// 				PrimaryAzurePort: to.Ptr("A51-TEST-06GMR-CIS-1-PRI-A"),
	// 				PrimaryPeerAddressPrefix: to.Ptr("123.0.0.0/30"),
	// 				ProvisioningState: to.Ptr(armnetwork.ProvisioningStateSucceeded),
	// 				RouteFilter: &armnetwork.SubResource{
	// 					ID: to.Ptr("/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/routeFilters/filterName"),
	// 				},
	// 				SecondaryAzurePort: to.Ptr("A51-TEST-06GMR-CIS-2-SEC-A"),
	// 				SecondaryPeerAddressPrefix: to.Ptr("123.0.0.4/30"),
	// 				State: to.Ptr(armnetwork.ExpressRoutePeeringStateEnabled),
	// 				VlanID: to.Ptr[int32](300),
	// 			},
	// 		}
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

JavaScript

const { NetworkManagementClient } = require("@azure/arm-network");
const { DefaultAzureCredential } = require("@azure/identity");
require("dotenv/config");

/**
 * This sample demonstrates how to Gets the specified peering for the express route circuit.
 *
 * @summary Gets the specified peering for the express route circuit.
 * x-ms-original-file: specification/network/resource-manager/Microsoft.Network/stable/2025-03-01/examples/ExpressRouteCircuitPeeringGet.json
 */
async function getExpressRouteCircuitPeering() {
  const subscriptionId = process.env["NETWORK_SUBSCRIPTION_ID"] || "subid";
  const resourceGroupName = process.env["NETWORK_RESOURCE_GROUP"] || "rg1";
  const circuitName = "circuitName";
  const peeringName = "MicrosoftPeering";
  const credential = new DefaultAzureCredential();
  const client = new NetworkManagementClient(credential, subscriptionId);
  const result = await client.expressRouteCircuitPeerings.get(
    resourceGroupName,
    circuitName,
    peeringName,
  );
  console.log(result);
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

dotnet

using Azure;
using Azure.ResourceManager;
using System;
using System.Threading.Tasks;
using Azure.Core;
using Azure.Identity;
using Azure.ResourceManager.Network.Models;
using Azure.ResourceManager.Network;

// Generated from example definition: specification/network/resource-manager/Microsoft.Network/stable/2025-03-01/examples/ExpressRouteCircuitPeeringGet.json
// this example is just showing the usage of "ExpressRouteCircuitPeerings_Get" operation, for the dependent resources, they will have to be created separately.

// get your azure access token, for more details of how Azure SDK get your access token, please refer to https://learn.microsoft.com/en-us/dotnet/azure/sdk/authentication?tabs=command-line
TokenCredential cred = new DefaultAzureCredential();
// authenticate your client
ArmClient client = new ArmClient(cred);

// this example assumes you already have this ExpressRouteCircuitPeeringResource created on azure
// for more information of creating ExpressRouteCircuitPeeringResource, please refer to the document of ExpressRouteCircuitPeeringResource
string subscriptionId = "subid";
string resourceGroupName = "rg1";
string circuitName = "circuitName";
string peeringName = "MicrosoftPeering";
ResourceIdentifier expressRouteCircuitPeeringResourceId = ExpressRouteCircuitPeeringResource.CreateResourceIdentifier(subscriptionId, resourceGroupName, circuitName, peeringName);
ExpressRouteCircuitPeeringResource expressRouteCircuitPeering = client.GetExpressRouteCircuitPeeringResource(expressRouteCircuitPeeringResourceId);

// invoke the operation
ExpressRouteCircuitPeeringResource result = await expressRouteCircuitPeering.GetAsync();

// the variable result is a resource, you could call other operations on this instance as well
// but just for demo, we get its data from this resource instance
ExpressRouteCircuitPeeringData resourceData = result.Data;
// for demo we just print out the id
Console.WriteLine($"Succeeded on id: {resourceData.Id}");

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Sample response

Status code:

200

{
  "name": "MicrosoftPeering",
  "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/expressRouteCircuits/circuitName/peerings/MicrosoftPeering",
  "etag": "W/\"b2a25b98-2e6d-4d46-87f2-089de5f6fdf9\"",
  "properties": {
    "provisioningState": "Succeeded",
    "peeringType": "MicrosoftPeering",
    "azureASN": 12076,
    "peerASN": 100,
    "primaryPeerAddressPrefix": "123.0.0.0/30",
    "secondaryPeerAddressPrefix": "123.0.0.4/30",
    "primaryAzurePort": "A51-TEST-06GMR-CIS-1-PRI-A",
    "secondaryAzurePort": "A51-TEST-06GMR-CIS-2-SEC-A",
    "state": "Enabled",
    "vlanId": 300,
    "gatewayManagerEtag": "103",
    "lastModifiedBy": "Customer",
    "microsoftPeeringConfig": {
      "advertisedPublicPrefixes": [
        "123.1.0.0/24"
      ],
      "advertisedCommunities": [],
      "advertisedPublicPrefixesState": "ValidationNeeded",
      "customerASN": 23,
      "legacyMode": 0,
      "routingRegistryName": "ARIN"
    },
    "ipv6PeeringConfig": {
      "primaryPeerAddressPrefix": "3FFE:FFFF:0:CD30::/126",
      "secondaryPeerAddressPrefix": "3FFE:FFFF:0:CD30::4/126",
      "state": "Enabled",
      "microsoftPeeringConfig": {
        "advertisedPublicPrefixes": [
          "3FFE:FFFF:0:CD31::/120"
        ],
        "advertisedCommunities": [],
        "advertisedPublicPrefixesState": "ValidationNeeded",
        "customerASN": 23,
        "legacyMode": 0,
        "routingRegistryName": "ARIN"
      }
    },
    "routeFilter": {
      "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/routeFilters/filterName"
    }
  },
  "type": "Microsoft.Network/expressRouteCircuits/peerings"
}

Definitions

Name	Description
AdvertisedPublicPrefixProperties	Prefix properties required to perform validation using openssl signature.
AdvertisedPublicPrefixPropertiesValidationState	Advertised Public Prefix State that denotes if the prefix is validated or not.
CircuitConnectionStatus	Express Route Circuit connection state.
CloudError	An error response from the service.
CloudErrorBody	An error response from the service.
ExpressRouteCircuitConnection	Express Route Circuit Connection in an ExpressRouteCircuitPeering resource.
ExpressRouteCircuitPeering	Peering in an ExpressRouteCircuit resource.
ExpressRouteCircuitPeeringAdvertisedPublicPrefixState	The advertised public prefix state of the Peering resource.
ExpressRouteCircuitPeeringConfig	Specifies the peering configuration.
ExpressRouteCircuitPeeringState	The state of peering.
ExpressRouteCircuitStats	Contains stats associated with the peering.
ExpressRouteConnectionId	The ID of the ExpressRouteConnection.
ExpressRoutePeeringState	The state of peering.
ExpressRoutePeeringType	The peering type.
Ipv6CircuitConnectionConfig	IPv6 Circuit Connection properties for global reach.
Ipv6ExpressRouteCircuitPeeringConfig	Contains IPv6 peering config.
PeerExpressRouteCircuitConnection	Peer Express Route Circuit Connection in an ExpressRouteCircuitPeering resource.
ProvisioningState	The current provisioning state.
SubResource	Reference to another subresource.

AdvertisedPublicPrefixProperties

Object

Prefix properties required to perform validation using openssl signature.

Name	Type	Description
prefix	string	Advertised Public Prefix.
signature	string	Signed string generated by encrypting validationId with a private key.
validationId	string	Validation string that contains circuit peering info.
validationState	AdvertisedPublicPrefixPropertiesValidationState	Advertised Public Prefix State that denotes if the prefix is validated or not.

AdvertisedPublicPrefixPropertiesValidationState

Enumeration

Advertised Public Prefix State that denotes if the prefix is validated or not.

Value	Description
NotConfigured
Configuring
Configured
ValidationNeeded
ValidationFailed
ManualValidationNeeded
AsnValidationFailed
CertificateMissingInRoutingRegistry
InvalidSignatureEncoding
SignatureVerificationFailed

CircuitConnectionStatus

Enumeration

Express Route Circuit connection state.

Value	Description
Connected
Connecting
Disconnected

CloudError

Object

An error response from the service.

Name	Type	Description
error	CloudErrorBody	Cloud error body.

CloudErrorBody

Object

An error response from the service.

Name	Type	Description
code	string	An identifier for the error. Codes are invariant and are intended to be consumed programmatically.
details	CloudErrorBody[]	A list of additional details about the error.
message	string	A message describing the error, intended to be suitable for display in a user interface.
target	string	The target of the particular error. For example, the name of the property in error.

ExpressRouteCircuitConnection

Object

Express Route Circuit Connection in an ExpressRouteCircuitPeering resource.

Name	Type	Description
etag	string	A unique read-only string that changes whenever the resource is updated.
id	string	Resource ID.
name	string	The name of the resource that is unique within a resource group. This name can be used to access the resource.
properties.addressPrefix	string	/29 IP address space to carve out Customer addresses for tunnels.
properties.authorizationKey	string	The authorization key.
properties.circuitConnectionStatus	CircuitConnectionStatus	Express Route Circuit connection state.
properties.expressRouteCircuitPeering	SubResource	Reference to Express Route Circuit Private Peering Resource of the circuit initiating connection.
properties.ipv6CircuitConnectionConfig	Ipv6CircuitConnectionConfig	IPv6 Address PrefixProperties of the express route circuit connection.
properties.peerExpressRouteCircuitPeering	SubResource	Reference to Express Route Circuit Private Peering Resource of the peered circuit.
properties.provisioningState	ProvisioningState	The provisioning state of the express route circuit connection resource.
type	string	Type of the resource.

ExpressRouteCircuitPeering

Object

Peering in an ExpressRouteCircuit resource.

Name	Type	Description
etag	string	A unique read-only string that changes whenever the resource is updated.
id	string	Resource ID.
name	string	The name of the resource that is unique within a resource group. This name can be used to access the resource.
properties.azureASN	integer (int32)	The Azure ASN.
properties.connections	ExpressRouteCircuitConnection[]	The list of circuit connections associated with Azure Private Peering for this circuit.
properties.expressRouteConnection	ExpressRouteConnectionId	The ExpressRoute connection.
properties.gatewayManagerEtag	string	The GatewayManager Etag.
properties.ipv6PeeringConfig	Ipv6ExpressRouteCircuitPeeringConfig	The IPv6 peering configuration.
properties.lastModifiedBy	string	Who was the last to modify the peering.
properties.microsoftPeeringConfig	ExpressRouteCircuitPeeringConfig	The Microsoft peering configuration.
properties.peerASN	integer (int64) minimum: 1 maximum: 4294967295	The peer ASN.
properties.peeredConnections	PeerExpressRouteCircuitConnection[]	The list of peered circuit connections associated with Azure Private Peering for this circuit.
properties.peeringType	ExpressRoutePeeringType	The peering type.
properties.primaryAzurePort	string	The primary port.
properties.primaryPeerAddressPrefix	string	The primary address prefix.
properties.provisioningState	ProvisioningState	The provisioning state of the express route circuit peering resource.
properties.routeFilter	SubResource	The reference to the RouteFilter resource.
properties.secondaryAzurePort	string	The secondary port.
properties.secondaryPeerAddressPrefix	string	The secondary address prefix.
properties.sharedKey	string	The shared key.
properties.state	ExpressRoutePeeringState	The peering state.
properties.stats	ExpressRouteCircuitStats	The peering stats of express route circuit.
properties.vlanId	integer (int32)	The VLAN ID.
type	string	Type of the resource.

ExpressRouteCircuitPeeringAdvertisedPublicPrefixState

Enumeration

The advertised public prefix state of the Peering resource.

Value	Description
NotConfigured
Configuring
Configured
ValidationNeeded

ExpressRouteCircuitPeeringConfig

Object

Specifies the peering configuration.

Name	Type	Description
advertisedCommunities	string[]	The communities of bgp peering. Specified for microsoft peering.
advertisedPublicPrefixInfo	AdvertisedPublicPrefixProperties[]	List of Prefix information required to perform validation.
advertisedPublicPrefixes	string[]	The reference to AdvertisedPublicPrefixes.
advertisedPublicPrefixesState	ExpressRouteCircuitPeeringAdvertisedPublicPrefixState	The advertised public prefix state of the Peering resource.
customerASN	integer (int32)	The CustomerASN of the peering.
legacyMode	integer (int32)	The legacy mode of the peering.
routingRegistryName	string	The RoutingRegistryName of the configuration.

ExpressRouteCircuitPeeringState

Enumeration

The state of peering.

Value	Description
Disabled
Enabled

ExpressRouteCircuitStats

Object

Contains stats associated with the peering.

Name	Type	Description
primarybytesIn	integer (int64)	The Primary BytesIn of the peering.
primarybytesOut	integer (int64)	The primary BytesOut of the peering.
secondarybytesIn	integer (int64)	The secondary BytesIn of the peering.
secondarybytesOut	integer (int64)	The secondary BytesOut of the peering.

ExpressRouteConnectionId

Object

The ID of the ExpressRouteConnection.

Name	Type	Description
id	string	The ID of the ExpressRouteConnection.

ExpressRoutePeeringState

Enumeration

The state of peering.

Value	Description
Disabled
Enabled

ExpressRoutePeeringType

Enumeration

The peering type.

Value	Description
AzurePublicPeering
AzurePrivatePeering
MicrosoftPeering

Ipv6CircuitConnectionConfig

Object

IPv6 Circuit Connection properties for global reach.

Name	Type	Description
addressPrefix	string	/125 IP address space to carve out customer addresses for global reach.
circuitConnectionStatus	CircuitConnectionStatus	Express Route Circuit connection state.

Ipv6ExpressRouteCircuitPeeringConfig

Object

Contains IPv6 peering config.

Name	Type	Description
microsoftPeeringConfig	ExpressRouteCircuitPeeringConfig	The Microsoft peering configuration.
primaryPeerAddressPrefix	string	The primary address prefix.
routeFilter	SubResource	The reference to the RouteFilter resource.
secondaryPeerAddressPrefix	string	The secondary address prefix.
state	ExpressRouteCircuitPeeringState	The state of peering.

PeerExpressRouteCircuitConnection

Object

Peer Express Route Circuit Connection in an ExpressRouteCircuitPeering resource.

Name	Type	Description
etag	string	A unique read-only string that changes whenever the resource is updated.
id	string	Resource ID.
name	string	The name of the resource that is unique within a resource group. This name can be used to access the resource.
properties.addressPrefix	string	/29 IP address space to carve out Customer addresses for tunnels.
properties.authResourceGuid	string	The resource guid of the authorization used for the express route circuit connection.
properties.circuitConnectionStatus	CircuitConnectionStatus	Express Route Circuit connection state.
properties.connectionName	string	The name of the express route circuit connection resource.
properties.expressRouteCircuitPeering	SubResource	Reference to Express Route Circuit Private Peering Resource of the circuit.
properties.peerExpressRouteCircuitPeering	SubResource	Reference to Express Route Circuit Private Peering Resource of the peered circuit.
properties.provisioningState	ProvisioningState	The provisioning state of the peer express route circuit connection resource.
type	string	Type of the resource.

ProvisioningState

Enumeration

The current provisioning state.

Value	Description
Succeeded
Updating
Deleting
Failed

SubResource

Object

Reference to another subresource.

Name	Type	Description
id	string	Resource ID.