EP1771980A1 - Netzzugangskontrolle für einen ausfallsicheren netzübergang - Google Patents
Netzzugangskontrolle für einen ausfallsicheren netzübergangInfo
- Publication number
- EP1771980A1 EP1771980A1 EP05777834A EP05777834A EP1771980A1 EP 1771980 A1 EP1771980 A1 EP 1771980A1 EP 05777834 A EP05777834 A EP 05777834A EP 05777834 A EP05777834 A EP 05777834A EP 1771980 A1 EP1771980 A1 EP 1771980A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- node
- traffic
- network
- communication network
- links
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/20—Traffic policing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
Definitions
- the invention relates to a method, a network element and a communication network for traffic limitation in a communication network formed with links and nodes.
- Transmission of real-time traffic such as voice, video or audio data.
- IP protocol Internet Protocol
- Internet Protocol Internet Protocol
- packet-oriented networks such as the Internet were provided for the transmission of data in the context of a so-called "best effort", ie for a data transmission without the guarantee of quality of service features real-time traffic mechanisms must be provided for the provision of quality of service features.
- Quality of service are enabled.
- the individual networks or autonomous systems of a network network can be extended for transmission in compliance with quality of service characteristics.
- quality of service features realized within the networks are likewise guaranteed. This applies, on the one hand, to a traffic restriction to avoid an overload, and, on the other hand, to a redundancy for intercepting faults or failures.
- One way to meet these quality criteria when transmitting between networks is to provide two or more links between the various networks representing mutual reserve links or backup links, and at the same time to dimension the traffic so that during normal operation and the various sturgeon scenarios no overload occurs.
- Such handling of links between different networks or inter-domain links proves difficult in coordination with access control within the individual networks (or intra-domain access control), because both Problems are coupled with each other.
- the determination of the parameters in the intra-domain access control would then have to take place in accordance with the interdomain conditions.
- the object of the invention is to improve the access control in packet-oriented networks with regard to the requirements of the inter-domain transmission of traffic.
- the invention is based on a method in which a check of admissibility is carried out for a network or autonomous system for traffic formed by links and nodes, which refers to a first and a second node. This verification of admissibility is realized by means of one or more admissibility checks.
- the two nodes ie the first and the second node, are related to the traffic to be transmitted in such a way that the traffic is to pass first the first node and later the second node.
- the first node may, for example, be a network input node or a traffic-generating node, ie a source node of the communication network.
- a network input node of a further communications network formed with links and nodes, into which the traffic to be transmitted is to be transmitted is not defined as the second node, as is conventionally the case, for a network output node of the considered communications network.
- a network output node of a further communication network is defined as the first node, from which the traffic is to be transmitted to the considered communication network.
- both networks are connected by at least two links. For example, At least two links are then provided, which lead from the considered communication network to the network node representing the second node of the further communication network, so that if one link fails, the second can assume the traffic conducted via this link. In the alternative, then at least two links lead from the output node of the other network to the be ⁇ considered communication network.
- the verification of admissibility can be carried out for individual packages or flows. It is also possible to provide for an admissibility check only for certain traffic classes and to accept delays and the throwing of parcels in the case of low-priority traffic classes or a low-priority traffic class. Typically, such a traffic class will be used for conventional data traffic.
- Two admissibility checks namely a first admissibility check with the aid of a limit value for the traffic passing through the first node and a second permissibility check with the aid of a limit value for traffic passing through the second node.
- the subject of the invention also comprises a network element with means for carrying out a method according to the invention.
- a network element may e.g. be given by:
- a device for access control or admission control unit e.g. a side-by-side computer that is placed next to a router or a remote resource management unit, a so-called bandwidth broker, or a software component in a router that operates according to a method of the invention.
- a network management unit or a network control server or network control server which calculates the admission control budgets and / or configures them in the above-mentioned units.
- a network planning tool which uses the method according to the invention in determining the necessary link capacities for a given traffic or the traffic permissible in a network.
- a unit eg in network management or elsewhere
- that is involved in contract negotiations with neighboring Network operators calculates whether a desired SLA (Service Level Agreement) can be realized and / or with which alternative parameters (eg bandwidth request) the SLA could be promised.
- SLA Service Level Agreement
- the subject invention comprises a communication network with means for carrying out a method according to the invention.
- a communication network can in particular comprise a network element with means for carrying out a method according to the invention.
- FIG. 1 shows a conventional linking of networks for a secure intermediate domain routing.
- FIG. 2 A connection of different networks by
- FIG. 1 and FIG. 2 three networks or autonomous systems AS1, AS2 and AS3 are shown. Traffic can enter and leave these networks through edge nodes.
- edge nodes As an example, some of the figures with ER (ER: Egress Router) designated edge nodes are located in the figures.
- ER Egress Router
- an admissibility check is given which relates to the total traffic transmitted between points X and C.
- new traffic to be transmitted between these points is registered at Point X. It will be checked whether the approval of this traffic would exceed the limit. If this is not the case, traffic is transferred between points X and C. It can be calculated on the basis of the topology of the network and the traffic matrix which limit values for edge point can be set to edge-point relationships, so that in view of the distribution of the traffic in the network, overload situations do not occur.
- Redundancy or interference scenarios can be taken into account by carrying out a corresponding determination of the limits for the admissibility check for all relevant interference scenarios, ie for all topologies of the network that result from corresponding failures and then the minimum over all the incidents considered the limit values for the maximum permissible traffic are used as limit values, so that even if one of the disruptive scenarios occurs, the traffic volume to be transmitted in the network or via the network to another network does not constitute an overload.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004037034 | 2004-07-30 | ||
| PCT/EP2005/053696 WO2006013187A1 (de) | 2004-07-30 | 2005-07-28 | Netzzugangskontrolle für einen ausfallsicheren netzübergang |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1771980A1 true EP1771980A1 (de) | 2007-04-11 |
Family
ID=35058836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05777834A Withdrawn EP1771980A1 (de) | 2004-07-30 | 2005-07-28 | Netzzugangskontrolle für einen ausfallsicheren netzübergang |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1771980A1 (de) |
| CN (1) | CN1993938A (de) |
| WO (1) | WO2006013187A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2001240416A1 (en) * | 2000-01-24 | 2001-07-31 | Siemens Aktiengesellschaft | Method for optimally making resources available in a communications network thatfunctions according to an internet protocol |
| US7146425B2 (en) * | 2000-12-22 | 2006-12-05 | Matsushita Electric Industrial Co., Ltd. | Measurement-based admission control utilizing effective envelopes and service curves |
| WO2004021648A1 (de) * | 2002-08-14 | 2004-03-11 | Siemens Aktiengesellschaft | Zugangskontrolle bei paketorientierten netzen |
-
2005
- 2005-07-28 WO PCT/EP2005/053696 patent/WO2006013187A1/de not_active Ceased
- 2005-07-28 EP EP05777834A patent/EP1771980A1/de not_active Withdrawn
- 2005-07-28 CN CNA2005800257700A patent/CN1993938A/zh active Pending
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006013187A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006013187A1 (de) | 2006-02-09 |
| CN1993938A (zh) | 2007-07-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20070109 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
| 17Q | First examination report despatched |
Effective date: 20070618 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOKIA SIEMENS NETWORKS GMBH & CO. KG |
|
| DAX | Request for extension of the european patent (deleted) | ||
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOKIA SIEMENS NETWORKS S.P.A. |
|
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOKIA SIEMENS NETWORKS GMBH & CO. KG |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20071030 |