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WO2015073153A3 - Filtering at lower network protocol layers - Google Patents

Filtering at lower network protocol layers Download PDF

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Publication number
WO2015073153A3
WO2015073153A3 PCT/US2014/060498 US2014060498W WO2015073153A3 WO 2015073153 A3 WO2015073153 A3 WO 2015073153A3 US 2014060498 W US2014060498 W US 2014060498W WO 2015073153 A3 WO2015073153 A3 WO 2015073153A3
Authority
WO
WIPO (PCT)
Prior art keywords
multicast
layer
filtering
packets
protocol layer
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.)
Ceased
Application number
PCT/US2014/060498
Other languages
French (fr)
Other versions
WO2015073153A2 (en
Inventor
Thubert Pascal
Shwetha Subray Bhandari
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
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
Priority claimed from US14/155,582 external-priority patent/US9948542B2/en
Application filed by Cisco Technology Inc filed Critical Cisco Technology Inc
Priority to CN201480031872.2A priority Critical patent/CN105264862B/en
Priority to EP14793689.2A priority patent/EP3072265B1/en
Publication of WO2015073153A2 publication Critical patent/WO2015073153A2/en
Publication of WO2015073153A3 publication Critical patent/WO2015073153A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

In one embodiment, a lower protocol layer in a network device filters packets based on a class and a particular of a destination address prior to sending information from the received packet to a higher protocol layer. For example, certain constrained networks include network nodes that do not have the ability to maintain a multicast distribution entry for each multicast address used in the network. By only forwarding on a portion of a multicast address, packets are often delivered to nodes in addition to the actual multicast subscribers. By filtering these incorrectly delivered packets at a lower protocol layer (e.g., layer 2 or layer 3), processing cycles at higher protocol layers are avoided. Additionally in one embodiment, class and particulars are deterministically determined (e.g., using a same hashing function) such that services can be discovered and used by subscribing to a corresponding multicast group.
PCT/US2014/060498 2013-11-18 2014-10-14 Filtering at lower network protocol layers Ceased WO2015073153A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201480031872.2A CN105264862B (en) 2013-11-18 2014-10-14 Filtering at lower network protocol layers
EP14793689.2A EP3072265B1 (en) 2013-11-18 2014-10-14 Filtering at lower network protocol layers

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IN3360/DEL/2013 2013-11-18
US14/155,582 US9948542B2 (en) 2013-11-18 2014-01-15 Filtering on classes and particulars of a packet destination address at lower-protocol layers in a networked device
US14/155,582 2014-01-15
IN3360DE2013 IN2013DE03360A (en) 2013-11-18 2014-10-14

Publications (2)

Publication Number Publication Date
WO2015073153A2 WO2015073153A2 (en) 2015-05-21
WO2015073153A3 true WO2015073153A3 (en) 2015-09-03

Family

ID=51862553

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/060498 Ceased WO2015073153A2 (en) 2013-11-18 2014-10-14 Filtering at lower network protocol layers

Country Status (1)

Country Link
WO (1) WO2015073153A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7185081B1 (en) * 1999-04-30 2007-02-27 Pmc-Sierra, Inc. Method and apparatus for programmable lexical packet classifier
US20070061433A1 (en) * 2005-09-12 2007-03-15 Scott Reynolds Methods and apparatus to support dynamic allocation of traffic management resources in a network element
WO2008002604A2 (en) * 2006-06-28 2008-01-03 Cisco Technology, Inc. Qos-aware service flow mapping in mobile wireless all ip networks
GB2447635A (en) * 2007-03-19 2008-09-24 Fujitsu Ltd Scheduling qos communications between nodes within a predetermined time unit in wimax systems

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7185081B1 (en) * 1999-04-30 2007-02-27 Pmc-Sierra, Inc. Method and apparatus for programmable lexical packet classifier
US20070061433A1 (en) * 2005-09-12 2007-03-15 Scott Reynolds Methods and apparatus to support dynamic allocation of traffic management resources in a network element
WO2008002604A2 (en) * 2006-06-28 2008-01-03 Cisco Technology, Inc. Qos-aware service flow mapping in mobile wireless all ip networks
GB2447635A (en) * 2007-03-19 2008-09-24 Fujitsu Ltd Scheduling qos communications between nodes within a predetermined time unit in wimax systems

Also Published As

Publication number Publication date
WO2015073153A2 (en) 2015-05-21

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