Eliminating data traffic redirection in scalable clusters

Patent metadata

Field	Value
Publication number	US-2018248805-A1
Application number	US-201815967423-A
Country	US
Kind code	A1
Filing date	Apr 30, 2018
Priority date	Apr 24, 2014
Publication date	Aug 30, 2018
Grant date	—

Abstract

Provided are methods and systems for eliminating a redirection of data traffic in a cluster. An example method may include receiving, by one or more nodes of the cluster, a data packet associated with a service session. The method may include determining, by the node, that the data packet is directed to a further node in the cluster. The method may further include, in response to the determination, acquiring, by the node, a session context associated with the service session. Acquiring the session context may include sending, by the node, a request for the session context to the further node and receiving the session context from the further node. The method may further include processing, by the one or more nodes, the data packet based on the session context.

First claim

What is claimed is:

1 . A system for eliminating a redirection of data traffic, the system comprising:
a cluster comprising one or more nodes, the one or more nodes being configured to:
receive a data packet associated with a service session;
determine that the data packet is directed to a further node in the cluster; and
in response to the determination:
acquire a session context associated with the service session; and
process the data packet based on the session context.

2 . The system of claim 1 , wherein a first time required to acquire the session context is less than a second time required to redirect the data packet to the further node.

3 . The system of claim 1 , wherein the one or more nodes are further configured to store the session context in a dedicated memory.

4 . The system of claim 3 , further comprising a control plane configured to acquire the session context from the one or more nodes to obtain a plurality of session contexts of service sessions.

5 . The system of claim 4 , wherein the one or more nodes are configured to acquire a further session context by sending a request for the further session context to the control plane.

6 . The system of claim 4 , wherein the control plane is configured to synchronize one or more session contexts from the plurality of session contexts with the session context stored in the one or more nodes in the cluster.

7 . The system of claim 6 , wherein prior to synchronizing the one or more session contexts, the control plane selects the one or more session contexts from the plurality of session contexts based on priorities of the service sessions.

8 . The system of claim 7 , wherein the priorities of the service sessions are based on latency requirements for the service sessions.

9 . The system of claim 1 , wherein the one or more nodes are further configured to:
receive a further packet of a further service session; generate a further session context associated with the further service session; and send the further session context to one or more further nodes of the cluster.

10 . The system of claim 1 , wherein the one or more nodes are configured to:
send a request for the session context to the further node; and receive the session context from the further node.

11 . A method for eliminating a redirection of data traffic in a cluster, the method comprising:
receiving, by one or more nodes of the cluster, a data packet associated with a service session; determining, by the one or more nodes, that the data packet is directed to a further node in the cluster; and in response to the determination:
acquiring, by the one or more nodes, a session context associated with the service session; and
processing, by the one or more nodes, the data packet based on the session context.

12 . The method of claim 11 , wherein a first time required for acquiring the session context is less than a second time required to redirect the data packet to the further node.

13 . The method of claim 11 , further comprising storing, by the one or more nodes, the session context in a dedicated memory.

14 . The method of claim 13 , further comprising acquiring, by a control plane, the session context from the one or more nodes to obtain a plurality of session contexts of service sessions.

15 . The method of claim 14 , further comprising acquiring, by the one or more nodes, a further session context by sending a request for the further session context to the control plane.

16 . The method of claim 14 , further comprising:
selecting, by the control plane, one or more session contexts from the plurality of session contexts based on priorities of the service sessions; and synchronizing, by the control plane, the one or more session contexts from the plurality of session contexts with the session context stored in the one or more nodes of the cluster.

17 . The system of claim 16 , wherein the priority of the one or more service sessions is based on latency requirements for the service sessions.

18 . The method of claim 11 , wherein the acquiring the session context includes:
sending, by the one or more nodes, a request for the session context to the further node; and receiving, by the one or more nodes, the session context from the further node.

19 . The method of claim 11 , further comprising:
receiving, by the one or more nodes, a further packet of a further service session; generating, by the one or more nodes, a further session context associated with the further service session; and sending, by the one or more nodes, the further session context to one or more further nodes of the cluster.

20 . A non-transitory computer-readable medium having embodied thereon a program, the program providing instructions for a method for eliminating a redirection of data traffic in a cluster, the method comprising:
receiving, by one or more nodes of the cluster, a data packet associated with a service session; determining, by the one or more nodes, that the data packet is directed to a further node in the cluster; and in response to the determination:
acquiring, by the one or more nodes, a session context associated with the service session; and
processing, by the one or more nodes, the data packet based on the session context.

Assignees

• A10 Networks Inc

Inventors

• Kamat Gurudeep
• Sankar Swaminathan
• Dosovitsky Gennady
• Jalan Rajkumar

Classifications

• H04L47/20

  Traffic policing · CPC title

• H04L47/24 Primary

  Traffic characterised by specific attributes, e.g. priority or QoS · CPC title

• H04L47/801

  Real time traffic · CPC title

• H04L47/125

  by balancing the load, e.g. traffic engineering · CPC title

• H04L47/805

  QOS or priority aware · CPC title