JP5137941B2 - ネットワークの負荷バランシングと過負荷制御 - Google Patents
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- 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
- H04L47/11—Identifying congestion
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- 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
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/122—Avoiding congestion; Recovering from congestion by diverting traffic away from congested entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
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- 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
- H04L47/12—Avoiding congestion; Recovering from congestion
-
- 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
- H04L47/25—Flow control; Congestion control with rate being modified by the source upon detecting a change of network conditions
-
- 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
- H04L47/26—Flow control; Congestion control using explicit feedback to the source, e.g. choke packets
- H04L47/263—Rate modification at the source after receiving feedback
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/1008—Server selection for load balancing based on parameters of servers, e.g. available memory or workload
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/101—Server selection for load balancing based on network conditions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/1023—Server selection for load balancing based on a hash applied to IP addresses or costs
-
- 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
- H04L69/40—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection
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Description
J. Rosenberg他、「SIP: Session Initiation Protocol」、Internet Engineering Task Force(IETF)RFC 3261、2002年6月 S. Blake他、「An architecture for differentiated services」、IETF RFC 2475、1998年、12月 J. Nagle、「Congestion control in IP/TCP internetworks」、IETF RFC 896、1984年1月
xij(d)=(ターゲットdに方向づけられた)iからネクスト・ホップjを経由したトラフィックのフラクションであるものとする
uij(d)=サーバiによって観察されるjを経由した(ターゲットdに対する)「平滑化された」利用率であるものとする
アップデートごとに
Δxij(d)=αxij(d)(Ui−uij(d))を計算する
ここで、Ui=Σjxij(d)uij(d)
そのときには、新しいトラフィック割当ては、次式によって与えられる:
Xij(d)=max(0,xij(d)+Δxij(d))
xij(d)=Xij(d)/ΣjXij(d)
Claims (10)
- 複数のサーバを備えるネットワークにおいてメッセージを経路指定する方法であって、
第1のサーバにおいて、前記第1のサーバとターゲット・サーバとの間のそれぞれ第1の経路と第2の経路に関連する少なくとも第1のダウンストリーム・サーバと第2のダウンストリーム・サーバとを含む、前記ネットワークのダウンストリーム・サーバから、前記それぞれのダウンストリーム・サーバについての輻輳測度を含むフィードバック情報を受信するステップと、
前記ダウンストリーム・サーバの前記輻輳測度の間のアンバランスについて補償するために、前記受信されたフィードバック情報に基づいて前記第1のサーバにおけるメッセージ経路指定プロセスを調整するステップと
を含み、
前記第1および第2の経路のうちの1つにおける前記ダウンストリーム・サーバの少なくとも所与の1つが、前記第1のサーバから前記ターゲット・サーバに送信されたINVITE要求に対する前記ターゲット・サーバからの応答を受信し
前記所与のダウンストリーム・サーバは、前記ターゲット・サーバからの前記応答に含まれる輻輳測度と前記所与のダウンストリーム・サーバの輻輳測度とを比較し、前記所与のダウンストリーム・サーバの前記輻輳測度が、前記ターゲット・サーバからの前記応答に含まれる前記輻輳測度よりも高い輻輳レベルを示した場合には、前記所与のダウンストリーム・サーバは、前記応答のアップストリームを前記第1のサーバに送信する前に前記所与のダウンストリーム・サーバの前記輻輳測度を含むように前記ターゲット・サーバからの前記応答を変更する、
方法。 - 前記フィードバック情報は、前記第1のサーバと、前記ターゲット・サーバとの間の前記の第1の経路と第2の経路における複数のサーバの輻輳測度のうちの最高の輻輳測度を含む、請求項1に記載の方法。
- 前記の第1のダウンストリーム・サーバと第2のダウンストリーム・サーバのうちの一方は、ターゲット・サーバである、請求項1に記載の方法。
- 前記の第1のダウンストリーム・サーバと第2のダウンストリーム・サーバのうちの少なくとも一方は、前記第1のサーバの最も近い隣接サーバである、請求項1に記載の方法。
- 前記フィードバック情報に基づいて前記第1のサーバにおけるメッセージ経路指定プロセスを調整する前記ステップは、前記の第1の経路と第2の経路の上で経路指定されるべき与えられた組のメッセージの相対的パーセンテージを指定する経路指定情報を調整するステップをさらに含む、請求項1に記載の方法。
- ネットワークにおいてメッセージを経路指定する際に使用するための装置であって、
第1のサーバと、ターゲット・サーバとの間のそれぞれ第1の経路と第2の経路に関連する少なくとも第1のダウンストリーム・サーバと第2のダウンストリーム・サーバを含む、前記ネットワークのダウンストリーム・サーバから、前記それぞれのダウンストリーム・サーバについての輻輳測度を含むフィードバック情報を受信するように構成される、前記ネットワークの前記第1のサーバを備え、
前記第1のサーバは、さらに前記ダウンストリーム・サーバの前記輻輳測度の間のアンバランスについて補償するために前記受信されたフィードバック情報に基づいてそのメッセージ経路指定プロセスを調整し、
前記第1および第2の経路のうちの1つにおける前記ダウンストリーム・サーバの少なくとも所与の1つが、前記第1のサーバから前記ターゲット・サーバに送信されたINVITE要求に対する前記ターゲット・サーバからの応答を受信し
前記所与のダウンストリーム・サーバは、前記ターゲット・サーバからの前記応答に含まれる輻輳測度と前記所与のダウンストリーム・サーバの輻輳測度とを比較し、前記所与のダウンストリーム・サーバの前記輻輳測度が、前記ターゲット・サーバからの前記応答に含まれる前記輻輳測度よりも高い輻輳レベルを示した場合には、前記所与のダウンストリーム・サーバは、前記応答のアップストリームを前記第1のサーバに送信する前に前記所与のダウンストリーム・サーバの前記輻輳測度を含むように前記ターゲット・サーバからの前記応答を変更する、
ように構成される装置。 - 複数のサーバを備えるネットワークにおいてメッセージを経路指定する方法であって、
第1のサーバにおいて、前記第1のサーバと、ターゲット・サーバとの間の経路に関連している、前記ネットワークの少なくとも1つのダウンストリーム・サーバから、前記ダウンストリーム・サーバについての輻輳測度を含むフィードバック情報を受信するステップと、
前記フィードバック情報に基づいてユーザ・エージェントに対して配信するための、前記第1のサーバにおけるブロッキング・メッセージを生成するステップとを含み、
前記ダウンストリーム・サーバが、前記第1のサーバから前記ターゲット・サーバに送信されたINVITE要求に対する前記ターゲット・サーバからの応答を受信し、
前記ダウンストリーム・サーバは、前記ターゲット・サーバからの前記応答に含まれる輻輳測度と前記ダウンストリーム・サーバの輻輳測度とを比較し、前記ダウンストリーム・サーバの前記輻輳測度が、前記ターゲット・サーバからの前記応答に含まれる前記輻輳測度よりも高い輻輳レベルを示した場合には、前記ダウンストリーム・サーバは、前記応答のアップストリームを前記第1のサーバに送信する前に前記ダウンストリーム・サーバの前記輻輳測度を含むように前記ターゲット・サーバからの前記応答を変更する、
方法。 - 前記フィードバック情報は、前記第1のサーバと、前記ターゲット・サーバとの間の前記経路における複数のサーバの輻輳測度のうちの最高の輻輳測度を含む、請求項7に記載の方法。
- 前記ダウンストリーム・サーバは、前記第1のサーバの最も近い隣接サーバである、請求項7に記載の方法。
- ネットワークにおいてメッセージを経路指定する際に使用するための装置であって、
第1のサーバと、ターゲット・サーバとの間の経路に関連している、前記ネットワークの少なくとも1つのダウンストリーム・サーバから、前記ダウンストリーム・サーバについての輻輳測度を含むフィードバック情報を受信するように構成される、前記ネットワークの前記第1のサーバを備え、
前記第1のサーバは、さらに前記フィードバック情報に基づいてユーザ・エージェントに対して配信するためのブロッキング・メッセージを生成し、
前記ダウンストリーム・サーバが、前記第1のサーバから前記ターゲット・サーバに送信されたINVITE要求に対する前記ターゲット・サーバからの応答を受信し、
前記ダウンストリーム・サーバは、前記ターゲット・サーバからの前記応答に含まれる輻輳測度と前記ダウンストリーム・サーバの輻輳測度とを比較し、前記ダウンストリーム・サーバの前記輻輳測度が、前記ターゲット・サーバからの前記応答に含まれる前記輻輳測度よりも高い輻輳レベルを示した場合には、前記ダウンストリーム・サーバは、前記応答のアップストリームを前記第1のサーバに送信する前に前記ダウンストリーム・サーバの前記輻輳測度を含むように前記ターゲット・サーバからの前記応答を変更する、
ように構成される装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/395,455 US9219686B2 (en) | 2006-03-31 | 2006-03-31 | Network load balancing and overload control |
US11/395,455 | 2006-03-31 | ||
PCT/US2007/008244 WO2007117421A1 (en) | 2006-03-31 | 2007-03-30 | Network load balancing and overload control |
Publications (2)
Publication Number | Publication Date |
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JP2009532947A JP2009532947A (ja) | 2009-09-10 |
JP5137941B2 true JP5137941B2 (ja) | 2013-02-06 |
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JP2009503077A Expired - Fee Related JP5137941B2 (ja) | 2006-03-31 | 2007-03-30 | ネットワークの負荷バランシングと過負荷制御 |
Country Status (7)
Country | Link |
---|---|
US (2) | US9219686B2 (ja) |
EP (1) | EP2002619B1 (ja) |
JP (1) | JP5137941B2 (ja) |
KR (1) | KR101389155B1 (ja) |
CN (1) | CN101416453A (ja) |
AT (1) | ATE513394T1 (ja) |
WO (1) | WO2007117421A1 (ja) |
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