Method and system for seamless SCTP-server failover between SCTP servers running on different machines

A technology of server and packet network system, applied in the field of mobile packet core network, which can solve the problem that users cannot get cellular services.

Inactive Publication Date: 2017-08-18
BROCADE COMMUNICATIONS SYSTEMS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the SCTP link fails, all users under the

Method used

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  • Method and system for seamless SCTP-server failover between SCTP servers running on different machines
  • Method and system for seamless SCTP-server failover between SCTP servers running on different machines
  • Method and system for seamless SCTP-server failover between SCTP servers running on different machines

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[0021] FIG. 1 is a diagram of an example environment 100 in which the systems and / or methods described herein may be implemented. As shown, the environment 100 may include a set of User Devices 110-1, ..., 110-M (where M≧1) (hereinafter collectively referred to as "UDs 110" and individually referred to as "UDs 110"), a A set of eNodeBs 120 (hereinafter referred to as "eNBs 120"), including a set of MME servers 130-1, ..., 130-N (where N≧1) and a backup MME server 130-B (hereinafter collectively referred to as " MME 130" and individually referred to as "MME 130"), Serving Gateway Server 140 (hereinafter referred to as "SGW 140"), Packet Data Network (PDN) Gateway Server 150 (hereinafter referred to as "PGW") 150") and network 160. The number of devices and / or networks illustrated in FIG. 1 is provided for explanatory purposes only. In practice, there may be additional devices and / or networks; fewer devices and / or networks; different devices and / or networks; or devices arrange...

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Abstract

The invention discloses a method and system for seamless SCTP-server failover between SCTP servers running on different machines. A Stream Control Transmission Protocol (SCTP) cluster of multiple SCTP-servers is defined such that some servers are assigned Active Role where others are assigned Standby Role ensuring uninterrupted SCTP-connections between the SCTP-cluster and SCTP- clients. The Standby Servers use the same Internet Protocol (IP)-address(es) on the SCTP bound interfaces as their assigned Active Server. The Active Servers are communicating to the SCTP-clients, where the Standby Servers are communicating to their assigned Active SCTP-Server using a separate backchannel TCP-connection. The Standby Server receives regular updates over the backchannel connection from the Active Server. These updates ensure that the Standby Server could locally simulate SCTP- negotiations and create SCTP-associations as if the SCTP-negotiations. The Standby Servers are synchronized and ready in case of an Active Server failure to continue SCTP-communications. This handover does not involve any subsequent action from the SCTP-clients so that the SCTP-clients are unaware a handover occurred.

Description

[0001] Related Patent Applications [0002] This application claims priority to US Provisional Patent Application Serial No. 61 / 947,426, filed March 3, 2014, the disclosure of which is hereby expressly incorporated by reference in its entirety. technical field [0003] The present invention relates generally to mobile packet core networks. More specifically, the present invention relates to a method and system for seamlessly moving an established SCTP association between multiple Stream Control Transport (SCTP) servers without any service interruption. Background technique [0004] As mobile broadband data networks continue their migration to full Internet Protocol (IP), Internet Engineering Task Force (IETF) protocols are replacing legacy Signaling System 7 (SS7) based protocols. In particular, SCTP (Stream Control Transmission Protocol) has become the de facto transport layer for all control plane signalling. SCTP was designed with features missing from the other two com...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L1/00
CPCH04L61/103H04L43/0817H04L41/0668H04W8/20H04W24/04H04L43/10H04L49/70H04L65/61
Inventor L·斯托亚诺夫N·坎特
Owner BROCADE COMMUNICATIONS SYSTEMS
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