CA2233395A1 - Dynamic bandwidth management and rerouting - Google Patents

Dynamic bandwidth management and rerouting Download PDF

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Publication number
CA2233395A1
CA2233395A1 CA002233395A CA2233395A CA2233395A1 CA 2233395 A1 CA2233395 A1 CA 2233395A1 CA 002233395 A CA002233395 A CA 002233395A CA 2233395 A CA2233395 A CA 2233395A CA 2233395 A1 CA2233395 A1 CA 2233395A1
Authority
CA
Canada
Prior art keywords
resource
active connection
resource change
managing
connection
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.)
Abandoned
Application number
CA002233395A
Other languages
French (fr)
Inventor
Tricci So
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Priority to CA002233395A priority Critical patent/CA2233395A1/en
Priority to US09/177,602 priority patent/US6735176B1/en
Priority to EP99910060A priority patent/EP1066733A1/en
Priority to AU29179/99A priority patent/AU2917999A/en
Priority to PCT/CA1999/000259 priority patent/WO1999049693A1/en
Priority to JP2000538534A priority patent/JP2002516497A/en
Publication of CA2233395A1 publication Critical patent/CA2233395A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0478—Provisions for broadband connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5619—Network Node Interface, e.g. tandem connections, transit switching
    • H04L2012/5621—Virtual private network [VPN]; Private-network - network-interface (P-NNI)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5625—Operations, administration and maintenance [OAM]
    • H04L2012/5627—Fault tolerance and recovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5629—Admission control
    • H04L2012/5631—Resource management and allocation
    • H04L2012/5632—Bandwidth allocation
    • H04L2012/5634—In-call negotiation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0086—Network resource allocation, dimensioning or optimisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0088—Signalling aspects

Landscapes

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

Abstract

A communications network performs a variety of maintenance actions. One of those actions is rerouting of a connection path. A feature called "dynamic resource management option" allows the network or the called party of an active connection to initiate a resource change procedure when needs arises. The resource change can also be achieved by rerouting the existing path of the active connection. However a maintenance action taken in one network domain is only effected within the same domain, because a different domain may have different maintenance procedures.
Telecommunication connections often span more than one domain and a request for resource adjustment must be considered differently for a proper maintenance action. A resource change indication message includes a flag to indicate the message originated within or outside the domain. By observing the flag, it is possible to decide on a proper maintenance procedure.

Claims (12)

1. In an ATM network which is composed of a plurality of domains, a method of managing the resource demand of an active connection which spans one or more domains comprising steps of:
performing a maintenance action at a maintenance node in one domain, receiving a resource change message at the maintenance node, the message indicating a resource change request; and deciding to continue performing the maintenance action in response to the resource change request based upon whether or not the resource change message originated outside the domain of the maintenance node.
2. The method of managing the resource demand of an active connection, according to claim 1, wherein the step of deciding to continue comprising a further step of:
labeling the resource change message whether or not the resource change message originated outside the domain of the maintenance node.
3. The method of managing the resource demand of an active connection, according to claim 2, wherein the maintenance action is a rerouting procedure.
4. The method of managing the resource demand of an active connection, according to claim 3, wherein the maintenance node is the connection owner of the active connection, comprising a further step of:
the connection owner continuing to perform the rerouting procedure to its completion if the resource change request is for increasing the bandwidth or if the resource change request is for reducing the bandwidth and the resource change message originated outside the domain.
5. The method of managing the resource demand of an active connection, according to claim 3, wherein the maintenance node is the connection owner of the active connection, comprising a further step of:
the connection owner aborting the rerouting procedure and initiating a modify request procedure if the resource change request is for reducing the bandwidth and the request is acceptable.
6. The method of managing the resource demand of an active connection, according to claim 3, wherein the maintenance node is a rerouting node of the active connection, comprising a further step of:
the rerouting node continuing to perform the rerouting procedure to its completion if the resource change request is for increasing the bandwidth or if the resource change request is for reducing the bandwidth and the resource change message originated within the domain;
otherwise the rerouting node aborting the rerouting procedure; and sending upstream the resource change message, after having aborted or completed the maintenance action.
7. The method of managing the resource demand of an active connection, according to claim 2, comprising further steps of:
receiving the resource change message at a rendezvous node, and setting a flag in the resource change message, depending upon whether or not the resource change message originated outside the domain of the maintenance node; and sending upstream the resource change message so labeled.
8. The method of managing the resource demand of an active connection according to claim 4, wherein the rerouting procedure includes a step of:
breaking the active connection after a new connection has been established.
9. The method of managing the resource demand of an active connection according to claim 4, wherein the rerouting procedure includes a step of:
breaking the active connection before a new connection is established.
10. The method of managing the resource demand of an active connection according to claim 6, wherein the rerouting procedure includes a step of:
breaking the active connection after a new connection has been established.
11. The method of managing the resource demand of an active connection according to claim 6, wherein the rerouting procedure includes a step of:
breaking the active connection before a new connection is established.
12. The method of managing the resource demand of an active connection according to claim 4, further comprising steps of:
receiving another resource change message at the connection owner, the message indicating a resource change request; and determining if the rerouting procedure is to be continued.
CA002233395A 1998-03-26 1998-03-26 Dynamic bandwidth management and rerouting Abandoned CA2233395A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CA002233395A CA2233395A1 (en) 1998-03-26 1998-03-26 Dynamic bandwidth management and rerouting
US09/177,602 US6735176B1 (en) 1998-03-26 1998-10-23 Dynamic bandwidth management and rerouting
EP99910060A EP1066733A1 (en) 1998-03-26 1999-03-25 Dynamic bandwidth management and rerouting
AU29179/99A AU2917999A (en) 1998-03-26 1999-03-25 Dynamic bandwidth management and rerouting
PCT/CA1999/000259 WO1999049693A1 (en) 1998-03-26 1999-03-25 Dynamic bandwidth management and rerouting
JP2000538534A JP2002516497A (en) 1998-03-26 1999-03-25 Dynamic bandwidth management and rerouting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002233395A CA2233395A1 (en) 1998-03-26 1998-03-26 Dynamic bandwidth management and rerouting

Publications (1)

Publication Number Publication Date
CA2233395A1 true CA2233395A1 (en) 1999-09-26

Family

ID=4162258

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002233395A Abandoned CA2233395A1 (en) 1998-03-26 1998-03-26 Dynamic bandwidth management and rerouting

Country Status (5)

Country Link
EP (1) EP1066733A1 (en)
JP (1) JP2002516497A (en)
AU (1) AU2917999A (en)
CA (1) CA2233395A1 (en)
WO (1) WO1999049693A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8199649B2 (en) 2001-03-28 2012-06-12 Alcatel Lucent Method and apparatus for rerouting a connection in a data communication network based on a user connection monitoring function
US7872966B2 (en) 2003-11-04 2011-01-18 Alcatel Lucent Protected and high availability paths using DBR reroute paths
CN101223722B (en) * 2005-12-23 2011-11-16 中兴通讯股份有限公司 Method for soft re-routing in optical network

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE502852C2 (en) * 1994-04-08 1996-01-29 Ellemtel Utvecklings Ab Ways and systems for distributed hardware monitoring

Also Published As

Publication number Publication date
EP1066733A1 (en) 2001-01-10
AU2917999A (en) 1999-10-18
WO1999049693A1 (en) 1999-09-30
JP2002516497A (en) 2002-06-04

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