US 8,266,204 B2Granted

Direct addressability and direct server return

AssigneeMicrosoft Corporation

InventorsDeepak Bansal, Priyank Ramesh Warkhede, Thiruvengadam Venketesan

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Abstract

Cloud computing platforms having computer-readable media that perform methods for direct addressability and direct server return are provided. The cloud computing platform includes a load balancer and several servers. The servers are configured with public addresses, private addresses, and an address of the load balancer. The loopback interface of the servers is configured with the address of the load balancer. This allows a server to bypass the load balancer when replying to communication messages. Additionally, the public and private addresses of the servers enable direct addressability in the cloud computing platform. Accordingly, an application executing in the cloud computing platform may connect two or more clients on the same server.

Claims9

Dependent claims

A computer-implemented method to perform direct server return in a cloud computing platform, the method comprising:

receiving a message addressed to a public interface of a load balancer connected to multiple servers;
selecting one of the servers to process the message;
modifying the message to include a media access control address of the selected server as the destination media access control address and retaining the internet protocol address of the load balancer as the destination internet protocol address of the message;
transmitting the modified message to the selected server associated with the destination media access control address, wherein the server has a loopback interface configured to match the internet protocol address of the load balancer and is configured to communicate a reply to a source of the message without traversing the load balancer;
and
not responding to address resolution protocol requests that specify the internet protocol address of the load balancer even if the servers have a loopback interface configured to match the internet protocol address of the load balancer.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/723,994Filed 15 Mar 2010
Published: US 2011/0225231 A115 Sep 2011
Granted: 11 Sep 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04L 67/1008
Server selection for load balancing: based on parameters of servers, e.g. available memory or workload
H04L 12/4641
Interconnection of networks: virtual LANs, VLANs, e.g. virtual private networks [VPN]
H04L 67/10
Protocols: in which an application is distributed across nodes in the network
H04L 67/1001
In which an application is distributed across nodes in the network: for accessing one among a plurality of replicated servers