WO2000079728A2 - Method and apparatus for reducing load distribution delay in an internet protocol switch - Google Patents
Method and apparatus for reducing load distribution delay in an internet protocol switch Download PDFInfo
- Publication number
- WO2000079728A2 WO2000079728A2 PCT/IB2000/000899 IB0000899W WO0079728A2 WO 2000079728 A2 WO2000079728 A2 WO 2000079728A2 IB 0000899 W IB0000899 W IB 0000899W WO 0079728 A2 WO0079728 A2 WO 0079728A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- card
- switch
- broadcast
- follower
- message
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13003—Constructional details of switching devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13096—Digital apparatus individually associated with a subscriber line, digital line circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13103—Memory
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13106—Microprocessor, CPU
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13164—Traffic (registration, measurement,...)
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13166—Fault prevention
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13176—Common channel signaling, CCS7
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13196—Connection circuit/link/trunk/junction, bridge, router, gateway
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13204—Protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13216—Code signals, frame structure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13292—Time division multiplexing, TDM
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13298—Local loop systems, access network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13389—LAN, internet
Definitions
- the present invention is related to load distribution among adapter
- invention is related to the distribution of network connections across
- IP internet protocol
- PSTN public switched telephone network
- IP telephony is becoming increasingly important, as data traffic on
- IP telephony switch often acts as a switch
- gateway between an IP network and the PSTN or private networks.
- trunk card within an internet trunk group (ITG) in a switch serves as a
- leader card while other cards serve as “follower cards.” Turning to Fig. 1 ,
- an initiating endpoint sends a setup message to the leader card within the
- the leader card responds with a call proceeding message.
- the leader card sends a facility message to the initiating endpoint redirect ⁇
- the leader card maintains knowledge of the status and availability of
- leader card must communi ⁇
- the present invention solves the above problems by providing an
- a leader card can perform
- the invention reduces call setup delay by reducing the need for the leader
- a method of communication is
- leader and follower cards such that whenever a leader
- Responses to the message include address information for the fol ⁇
- UDP user datagram protocol
- broadcast and response messages include a message type field, a call ID
- the invention is typically implemented using a computer program
- a computer program product includes a media with
- mented usually serves as a trunk interface to an IP network.
- IP network Such a switch
- the switch also includes the various adapter cards necessary to im ⁇
- each card includes a bus interface as well as a network
- Fig. 1 is a message flow diagram illustrating call setup in a switch of the
- Fig. 2 is a network diagram which illustrates the connection of a switch im ⁇
- Fig. 3 is a message flow diagram which illustrates the method of the pres ⁇
- Fig. 4 is a diagram of the UDP message of the present invention.
- Fig. 5 illustrates a media containing computer program code which enables
- Fig. 6 is a block diagram of an adapter card which implements the present
- Fig. 2 is a signal flow diagram which illustrates the method of the
- an initiating endpoint in the network sends
- Each card in the system is configured as a leader
- SNMP is a well-known, industry standard defined by the Internet
- SNMP is essentially a communications
- MIB's management information bases
- An MIB is a logical database consisting of
- the information comprising the MIB may be stored as any combination
- MIB Magnetic in-memory
- OID textual object identifier
- MIB objects are defined as a logical tree structure that
- an IP multicast group address is estab ⁇
- the card may join or leave the group anytime.
- the leader responds by sending a broad ⁇
- the broadcast message 201 is in the form of a UDP
- At least one follower card responds to the broadcast message with
- follower card is too busy to handle traffic, it simply does not respond to the broadcast. Since multiple follower cards may respond to the broadcast,
- the leader will maintain a dynamic table of follower card addresses.
- the call it sends a setup message to the computing module (CM) to direct
- leader card handles all the signaling associated with the call. In this case
- the leader card handles the H.225 call control signaling originating from the
- H.225 is a well-known call control signaling portion of
- the SETUP message is modified to model a Q.931
- CM module
- Q.931 is a well-known signaling stan- dard promulgated by the ITU, originally designed for handling call setup in
- ISDN integrated services digital network
- Fig. 3 illustrates the operating environment of the present invention.
- Network 301 is an internet protocol network.
- Network 301 is an internet protocol network.
- 304 is a leader card
- the central computing module is often
- CM computing module
- the adapter cards also communicate with the CM, if necessary,
- the backbone or trunk side of the switch 303 is
- the switch is connected to a time divi ⁇
- TDM sion multiplex
- Fig. 4 illustrates an example of a UDP message which can be used
- Fields 401 are present in every mes ⁇
- These fields include the message type field, callid field, and the IP address and
- the message type is indi ⁇
- This media can be a disk ⁇
- the media can also be a memory stor ⁇
- ROM read only memory
- RAM random access memory
- puter code can be transferred to the switch over some type of data net ⁇
- FIG. 5 illustrates one example of a media.
- Fig. 5 shows a storage
- the adapter cards are configured to the new UDP messages.
- the adapter cards are configured to the new UDP messages.
- card 605 contains a message processor and memory 612, an Ethernet
- peripheral module which is not shown for simplicity but which
- the packet/TDM converter 610 converts
- the IP network 601 corresponds to IP network
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00938982A EP1192779A2 (en) | 1999-06-17 | 2000-06-14 | Method and apparatus for reducing load distribution delay in an internet protocol switch |
CA002374214A CA2374214A1 (en) | 1999-06-17 | 2000-06-14 | Method and apparatus for reducing load distribution delay in an internet protocol switch |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/335,203 US6587456B1 (en) | 1999-06-17 | 1999-06-17 | Method and apparatus for reducing load distribution delay in an internet protocol switch |
US09/335,203 | 1999-06-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000079728A2 true WO2000079728A2 (en) | 2000-12-28 |
WO2000079728A3 WO2000079728A3 (en) | 2001-06-07 |
Family
ID=23310719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2000/000899 WO2000079728A2 (en) | 1999-06-17 | 2000-06-14 | Method and apparatus for reducing load distribution delay in an internet protocol switch |
Country Status (4)
Country | Link |
---|---|
US (2) | US6587456B1 (en) |
EP (1) | EP1192779A2 (en) |
CA (1) | CA2374214A1 (en) |
WO (1) | WO2000079728A2 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001313639A (en) * | 2000-04-27 | 2001-11-09 | Nec Corp | System and method for managing network configuration data and recording medium |
EP1308053B1 (en) * | 2000-08-08 | 2004-03-24 | Siemens Aktiengesellschaft | Method for the transmission of control information between a line-mediated and a packet-mediated communication network |
JP2004179877A (en) * | 2002-11-26 | 2004-06-24 | Sony Corp | Information processing apparatus, information processing method, and computer program |
CN101179411B (en) * | 2006-11-10 | 2011-03-02 | 中兴通讯股份有限公司 | Method of receiving multicast data using multi-network card in Linux system |
TWI381716B (en) * | 2007-12-31 | 2013-01-01 | Ind Tech Res Inst | Networked transmission system and method for stream data |
US8112542B2 (en) * | 2008-08-07 | 2012-02-07 | Broadcom Corporation | Multicast digital video lost packet recovery |
US20100315483A1 (en) * | 2009-03-20 | 2010-12-16 | King Keith C | Automatic Conferencing Based on Participant Presence |
US8842153B2 (en) | 2010-04-27 | 2014-09-23 | Lifesize Communications, Inc. | Automatically customizing a conferencing system based on proximity of a participant |
US8854417B2 (en) | 2010-04-27 | 2014-10-07 | Lifesize Communications, Inc. | Initiating recording of a videoconference via a single user interaction |
US8786667B2 (en) | 2011-04-26 | 2014-07-22 | Lifesize Communications, Inc. | Distributed recording of a videoconference in multiple formats |
US8780166B2 (en) | 2011-04-26 | 2014-07-15 | Lifesize Communications, Inc. | Collaborative recording of a videoconference using a recording server |
US8717400B2 (en) | 2011-07-29 | 2014-05-06 | Lifesize Communications, Inc. | Automatically moving a conferencing based on proximity of a participant |
US8982176B2 (en) | 2012-02-29 | 2015-03-17 | Logitech Europe S.A. | Distributed transcoding of a video based on insufficient computing resources |
US8970658B2 (en) | 2012-04-20 | 2015-03-03 | Logitech Europe S.A. | User interface allowing a participant to rejoin a previously left videoconference |
CN113923222B (en) * | 2021-12-13 | 2022-05-31 | 云和恩墨(北京)信息技术有限公司 | Data processing method and device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5774668A (en) * | 1995-06-07 | 1998-06-30 | Microsoft Corporation | System for on-line service in which gateway computer uses service map which includes loading condition of servers broadcasted by application servers for load balancing |
EP0865180A2 (en) * | 1997-03-14 | 1998-09-16 | Lucent Technologies Inc. | Load distribution among servers in a TCP/IP network |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6006272A (en) * | 1998-02-23 | 1999-12-21 | Lucent Technologies Inc. | Method for network address translation |
-
1999
- 1999-06-17 US US09/335,203 patent/US6587456B1/en not_active Expired - Lifetime
-
2000
- 2000-06-14 EP EP00938982A patent/EP1192779A2/en not_active Withdrawn
- 2000-06-14 CA CA002374214A patent/CA2374214A1/en not_active Abandoned
- 2000-06-14 WO PCT/IB2000/000899 patent/WO2000079728A2/en not_active Application Discontinuation
-
2003
- 2003-03-25 US US10/396,100 patent/US20030161299A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5774668A (en) * | 1995-06-07 | 1998-06-30 | Microsoft Corporation | System for on-line service in which gateway computer uses service map which includes loading condition of servers broadcasted by application servers for load balancing |
EP0865180A2 (en) * | 1997-03-14 | 1998-09-16 | Lucent Technologies Inc. | Load distribution among servers in a TCP/IP network |
Non-Patent Citations (1)
Title |
---|
LIAO W: "MOBILE INTERNET TELEPHONY: MOBILE EXTENSIONS TO H.323" NEW YORK, NY, MARCH 21 - 25, 1999,NEW YORK, NY: IEEE,US, 21 March 1999 (1999-03-21), pages 12-19, XP000868780 ISBN: 0-7803-5418-4 * |
Also Published As
Publication number | Publication date |
---|---|
US20030161299A1 (en) | 2003-08-28 |
EP1192779A2 (en) | 2002-04-03 |
US6587456B1 (en) | 2003-07-01 |
CA2374214A1 (en) | 2000-12-28 |
WO2000079728A3 (en) | 2001-06-07 |
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