CA2493960A1 - Source specific multicast group to source mapping - Google Patents

Source specific multicast group to source mapping Download PDF

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Publication number
CA2493960A1
CA2493960A1 CA002493960A CA2493960A CA2493960A1 CA 2493960 A1 CA2493960 A1 CA 2493960A1 CA 002493960 A CA002493960 A CA 002493960A CA 2493960 A CA2493960 A CA 2493960A CA 2493960 A1 CA2493960 A1 CA 2493960A1
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CA
Canada
Prior art keywords
address
channel
mnd
source
database
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002493960A
Other languages
French (fr)
Other versions
CA2493960C (en
Inventor
Arjen Boers
Ijsbrand Wijnands
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cisco Technology Inc
Original Assignee
Cisco Technology, Inc.
Arjen Boers
Ijsbrand Wijnands
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cisco Technology, Inc., Arjen Boers, Ijsbrand Wijnands filed Critical Cisco Technology, Inc.
Publication of CA2493960A1 publication Critical patent/CA2493960A1/en
Application granted granted Critical
Publication of CA2493960C publication Critical patent/CA2493960C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/185—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1859—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast adapted to provide push services, e.g. data channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1886—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with traffic restrictions for efficiency improvement, e.g. involving subnets or subdomains
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/10—Mapping addresses of different types

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Computer And Data Communications (AREA)

Abstract

A system and method of generating a channel address is disclosed. The method includes mapping a first address, obtained from a membership report, to a second address to generate a channel address. A multicast network device (M1JD) (114) for subscribing one or more hosts (124) on a multicast network (100) to one or more channels (104) is disclosed. The MND (114) includes a memory (116) containing a first address (206) and a SSM mapping engine (118) configured to map the first address (206) to a second address (208) to generate a channel address (210), identifying a channel (104), in response to the first address (206) contained in the memory.

Claims (34)

1. A method of generating a channel address, comprising:
mapping a first address to a second address to generate said channel address, wherein said first address is obtained from a first membership report.
2. The method of claim 1, wherein said first address is a source specific multicast group address.
3. The method of claim 1, wherein said second address is a source specific multicast source address configured to transmit data to said first address on a channel identified by said channel address.
4. The method of claim 1, wherein said channel address is a multicast channel address.
5. The method of claim 1, wherein said membership report is an IGMP
membership report.
6. The method of claim 5, wherein said membership report is at least one of an IGMP version 1 membership report and an IGMP version 2 membership report.
7. The method of claim 1, wherein said mapping occurs at an IGMP
layer.
8. The method of claim 1, further comprising:
querying a database with said first address; and receiving said second address.
9. The method of claim 8, wherein said database is at least one of a Domain Name Server (DNS) database and a local Source Specific Multicast (SSM) mapping database.
10. The method of claim 1, further comprising:
receiving said membership report from a host.
11. The method of claim 1, further comprising:
initiating a Protocol Independent Multicast (PIM) join message to join a host to a channel identified by said channel address, said PIM join message including said channel address.
12. The method of claim 1, further comprising:
generating a second membership report from said channel address.
13. The method of claim 12, wherein said second membership report is an IGMP version 3 membership report.
14. A multicast network device (MND) for subscribing one or more hosts on a multicast network to one or more channels, comprising:
a memory containing a first address; and a SSM mapping engine configured to map said first address to a second address to generate a channel address identifying a channel in response to said first address contained in said memory.
15. The MND of claim 14, further comprising:
a database containing information relating said first address to said second address.
16. The MND of claim 15 wherein the database is a domain name server database.
17. The MND of claim 15 wherein the database is a local database on said MND.
18. The MND of claim 14, further comprising:

a messaging engine configured to transmit a join message on said multicast network to subscribe said host to said channel, said join message including said channel address.
19. The MND of claim 18, wherein said messaging engine is an IGMP
messaging module.
20. The MND of claim 14, wherein said first address is a source specific multicast group address.
21. The MND of claim 14, wherein said second address is a source address of a source configured to transmit data on said channel.
22. A computer program product encoded in computer readable media, said computer program product comprising:

a first set of instructions, executable on a computer system, configured to map a first address to a second address, wherein said first address is obtained from a membership report; and a second set of instructions, executable on said computer system, configured to generate a channel address from said first address and said second address.
23. The computer program product of claim 22 further comprising a third set of instructions, executable on said computer system, configured to subscribe a host to a channel identified by said channel address by transmitting a multicast message to a source identified by said second address, said multicast message including said channel address.
24. ~The computer program product of claim 22, wherein said first set of instructions comprises:
a first sub-set of instructions, executable on a computer system, configured to query a database with said first address to obtain a corresponding second address.
25. ~The computer program product of claim 22, wherein said first address is a source specific multicast group address.
26. ~The computer program product of claim 22, wherein said second address is an address of a source configured to transmit data to said second address on a channel identified by said channel address.
27. ~A multicast network device (MND) for joining one or more hosts on a multicast network to one or more channels, comprising:
a memory containing a first address; and means for mapping said first address to a second address to generate a channel address identifying a channel in response to said information contained in said memory.
28. ~The MND of claim 27, further comprising:
means for relating said first address to said second address.
29. The MND of claim 28 wherein said means for relating is a domain name server database.
30. The MND of claim 28 wherein said means for relating is a local database on said MND.
31. The MND of claim 27, further comprising:

means for transmitting a Protocol Independent Multicast join message on said multicast network to subscribe said hosts to said one or more channels, said join message including said channel address.
32. The MND of claim 31, wherein said means for transmitting said, join message is an IGMP messaging module.
33. The MND of claim 27, wherein said first address is a source specific multicast group address.
34. The MND of claim 27, wherein said second address is a source address for a source configured to transmit data on said channel.
CA2493960A 2002-07-31 2003-07-31 Source specific multicast group to source mapping Expired - Lifetime CA2493960C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/208,977 2002-07-31
US10/208,977 US7936752B2 (en) 2002-07-31 2002-07-31 Source specific multicast group to source mapping
PCT/US2003/023944 WO2004012390A1 (en) 2002-07-31 2003-07-31 Mapping of a source specific multicast group address to a source address

Publications (2)

Publication Number Publication Date
CA2493960A1 true CA2493960A1 (en) 2004-02-05
CA2493960C CA2493960C (en) 2011-10-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2493960A Expired - Lifetime CA2493960C (en) 2002-07-31 2003-07-31 Source specific multicast group to source mapping

Country Status (8)

Country Link
US (2) US7936752B2 (en)
EP (2) EP1540884B1 (en)
CN (1) CN100428680C (en)
AT (1) ATE385634T1 (en)
AU (1) AU2003257074B2 (en)
CA (1) CA2493960C (en)
DE (1) DE60319007T2 (en)
WO (1) WO2004012390A1 (en)

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Also Published As

Publication number Publication date
EP1540884A1 (en) 2005-06-15
US8611348B2 (en) 2013-12-17
WO2004012390A1 (en) 2004-02-05
EP1890423A2 (en) 2008-02-20
EP1540884B1 (en) 2008-02-06
CN100428680C (en) 2008-10-22
US20040022244A1 (en) 2004-02-05
AU2003257074A1 (en) 2004-02-16
DE60319007T2 (en) 2009-01-29
CA2493960C (en) 2011-10-11
AU2003257074B2 (en) 2008-02-21
CN1672359A (en) 2005-09-21
DE60319007D1 (en) 2008-03-20
EP1890423B1 (en) 2012-05-16
ATE385634T1 (en) 2008-02-15
EP1890423A3 (en) 2010-06-02
US7936752B2 (en) 2011-05-03
US20110176545A1 (en) 2011-07-21

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