High availability protocol computing and method

• US 6,389,550 B1
• Filed: 12/23/1998
• Issued: 05/14/2002
• Est. Priority Date: 12/23/1998
• Status: Expired due to Term

• Current Assignee: Teradata US, Inc. (Teradata Corporation)
• Original Assignee: NCR Corporation (NCR Voyix Corporation)
• Inventors: Carter, Edward D.
• Primary Examiner(s): Lee, Thomas
• Assistant Examiner(s): Mai, RiJue
• Application Number:
  US09/219,757
• Time in Patent Office: 1,238 Days
• Field of Search: 714/1, 714/5, 714/48, 714/51-57, 714/7, 714/10, 714/11, 714/709, 709/224, 709/229, 710/1
• US Class Current: 714/1
• CPC Class Codes: H04L 69/32 Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
• CPC Class Codes: H04L 69/324 in the data link layer [OSI layer 2], e.g. HDLC
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A protocol for a high availability (HA) computer cluster. The protocol provides an open standard for various platforms and HA application software and provides such features as automatic message resend, communication path analysis and prioritization, independent heartbeat signal monitoring, routing, security and automatic configuration.

Claims

1. A computing apparatus, comprising:

processing logic

a plurality of communication devices that permit said computing apparatus to communicate with another computing apparatus; and

protocol logic coupled to said processing logic and said plurality of communication devices;

wherein said processing logic implements a HA protocol that monitors for a failed transmission through one of said plurality of communication devices and upon detection of such a failure, attempts to resend the content of the failed transmission through a most preferred other one of said communication devices; and

wherein said protocol logic is configured to monitor a cluster within which said computing apparatus is located and report changes from the group of changes including computing apparatus failure and resource failure to the HA application software executing on said processing logic.

2. The computer apparatus of claim 1, wherein said protocol logic is configured to send an acknowledge in response to receipt of a message from another computing apparatus connected through one of said communication devices.

3. The computer apparatus of claim 1, wherein in said protocol logic creates packets suitable for network and non-network transmission of a message, said packets including one or more of the appendable information groups including destination, source, security code, checksum, message type, size, message code and message text.

4. The computer apparatus of claim 1, wherein said protocol logic creates packets suitable for network and non-network transmission of a message, said packets having destination and source fields which permit routing to a particular computing apparatus in a cluster of computing apparatus in which said computing apparatus can be provided.

5. The computing apparatus of claim 1, wherein said protocol logic creates a prioritized list of said communication devices based on failure status and use status.

7. The computing apparatus of claim 1, wherein said protocol logic is configured to provide a security code with a message for transmission that comes from HA application software executing on said processing logic.

8. The computing apparatus of claim 1, wherein said protocol logic attempts to resend the content of the failed communication in such a manner that HA application software executing on said processing logic is not involved in the resend.

9. The computing apparatus of claim 1, wherein said protocol logic includes automatic configuration logic that, in conjunction with protocol logic of other computing apparatuses in a cluster within which said computing apparatus is located, is capable of automatically initializing the HA components of each computing apparatus in that cluster.

6. A computing apparatus, comprising:

processing logic a plurality of communication devices that permit said computing apparatus to communicate with another computing apparatus; and

protocol logic coupled to said processing logic and said plurality of communication devices;

wherein said processing logic implements a HA protocol that monitors for a failed transmission through one of said plurality of communication devices and upon detection of such a failure, attempts to resend the content of the failed transmission through a most preferred other one of said communication devices; and

wherein said protocol logic is configured to commence heartbeat signal propagation at the request of HA application software executing on said processing logic, internally monitor heartbeat signals, and communicate up to the HA application software when failure has occurred.

10. A computing apparatus, comprising:

processing logic;

a plurality of communication devices that permit said computing apparatus to communicate with another computing apparatus; and

protocol logic coupled to said processing logic and said plurality of communication devices; and

wherein said processing logic implements a HA protocol and is capable of performing one or more of the group of functions including;

(1) monitoring for a failed transmission through one of said plurality of communication devices and upon detection of such a failure, attempts to resend the content of the failed transmission through a most preferred other one of said communication devices

(2) generating an acknowledge in response to receipt of a message from another computing apparatus connected through one of said communication devices;

(3) associating a security code with a message for transmission that comes from HA application software executing on said processing logic;

(4) creating packets suitable for network and non-network transmission of a message;

(5) associating destination and source indicators with a message to permit routing to a particular computing apparatus in a cluster of computing apparatuses; and

(6) commencing heartbeat signal propagation at the request of HA application software executing on said processing logic, internally monitoring the heartbeat signals, and communicating up to the HA application software when failure has occurred.

11. The computer apparatus of claim 10, wherein in said protocol logic creates packets suitable for network and non-network transmission of a message, said packets including one or more of the appendable information groups including destination, source, security code, checksum, message type, size, message code and message text.

12. The computing apparatus of claim 10, wherein said protocol logic creates a prioritized list of said communication devices based on failure status.

13. The computing apparatus of claim 10, wherein said protocol logic attempts to resend the content of the failed communication in such a manner that HA application software executing on said processing logic is not involved in the resend.

14. The computing apparatus of claim 10, wherein said protocol logic includes automatic configuration logic that, in conjunction with protocol logic of other computing apparatuses in a cluster within which said computing apparatus is located, is capable of automatically initializing the HA components of each computing apparatus in that cluster.

15. A method for processing in a HA cluster, comprising the steps of:

providing processing logic;

providing a plurality of communication devices that permit said computing apparatus to communicate with another computing apparatus;

monitoring with protocol logic for a failed transmission through one of said plurality of communication devices and upon detection of such a failure, attempting to resend the content of the failed transmission through a most preferred other one of said communication devices; and

further comprising one or more of the steps of;

(1) associating a security code with a message for transmission that comes from HA application software executing on said processing logic;

(2) creating packets suitable for network and non-network transmission of a message;

(3) associating destination and source indicators with a message to permit routing to a particular computing apparatus in a cluster of computing apparatuses; and

(4) commencing heartbeat signal propagation at the request of HA application software executing on said processing logic, internally monitoring the heartbeat signals, and communicating up to the HA application software when failure has occurred.