The recursive DNS service caches the DNS responses it receives. Since it is an HTTPS endpoint, the client performs the necessary SSL/TLS handshake, and then makes an HTTP GET request for the '/login.aspx' page. The client connects to the application service endpoint directly, not through Traffic Manager. The client receives the DNS results and connects to the given IP address. The recursive DNS service consolidates the results and returns a single DNS response to the client. A DNS 'A' record containing the IP address of the EU-based service endpoint is returned. It contacts those name servers to request the '' DNS record. Next, the recursive DNS service finds the name servers for the '' domain. In this case, let us suppose is returned. The chosen endpoint is returned as another DNS CNAME record. For more information, see Traffic Manager Routing Methods. For more information, see Traffic Manager Endpoint Monitoring. The current health of each endpoint, as determined by the Traffic Manager health checks.The configured state of each endpoint (disabled endpoints are not returned).The Traffic Manager name servers receive the request. It then sends a request for the '' DNS record to those DNS servers. Next, the recursive DNS service finds the name servers for the '' domain, which are provided by the Azure Traffic Manager service. The DNS servers return the CNAME record that points to. It then contacts those name servers to request the '' DNS record. To resolve the DNS name, the recursive DNS service finds the name servers for the '' domain. Rather, the client off-loads the work of contacting the various authoritative DNS services across the Internet needed to resolve a DNS name. A recursive DNS service, sometimes called a 'local DNS' service, does not host DNS domains directly. The client sends a DNS query to its configured recursive DNS service to resolve the name ''. Alternatively you can use a simple HTTP redirect to direct requests for '' to an alternative name such as 'How clients connect using Traffic ManagerĬontinuing from the previous example, when a client requests the page, the client performs the following steps to resolve the DNS name and establish a connection: You can only create a CNAME for a domain under '', such as 'To work around this limitation, we recommend hosting your DNS domain on Azure DNS and using Alias records to point to your traffic manager profile. Thus you cannot create a CNAME for '' (sometimes called a 'naked' domain). DNS standards do not allow you to create a CNAME at the 'apex' (or root) of a domain. When using a vanity domain with Azure Traffic Manager, you must use a CNAME to point your vanity domain name to your Traffic Manager domain name. Configure their vanity domain name, '', to point to '', using a DNS CNAME record.Create a Traffic Manager profile, named '', and configure it to use the 'Performance' traffic-routing method across the three endpoints.The DNS names of these deployments are '', '', and ''. Deploy three instances of their service.
To achieve this configuration, they complete the following steps: To improve availability and maximize global performance, they use Traffic Manager to distribute client traffic to the closest available endpoint. The application is hosted in three regions of Azure. Traffic Manager exampleĬontoso Corp have developed a new partner portal. Traffic Manager does not see the traffic passing between the client and the service. Traffic Manager is not a proxy or a gateway. Clients connect to the selected endpoint directly. Traffic Manager uses DNS to direct clients to specific service endpoints based on the rules of the traffic-routing method. The most important point to understand is that Traffic Manager works at the DNS level which is at the Application layer (Layer-7). The client then connects to that IP address to access the service. When a client attempts to connect to a service, it must first resolve the DNS name of the service to an IP address. Continuous monitoring of endpoint health and automatic failover when endpoints fail.Distribution of traffic according to one of several traffic-routing methods.Traffic Manager provides two key benefits: An endpoint is any Internet-facing service hosted inside or outside of Azure. Azure Traffic Manager enables you to control the distribution of traffic across your application endpoints.
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