詳細検索結果
以下の条件での結果を表示する:
全文: "Virtual Router Redundancy Protocol"
3件中 1-3の結果を表示しています
  • Yukio OGAWA, Go HASEGAWA, Masayuki MURATA
    IEICE Transactions on Communications
    2015年 E98.B 巻 11 号 2121-2131
    発行日: 2015/11/01
    公開日: 2015/11/01
    ジャーナル 認証あり
    In a multi-tenant data center, nodes and links of tenants' virtual networks (VNs) share a single component of the physical substrate network (SN). The failure of a single SN component can thereby cause the simultaneous failures of multiple nodes and links in a single VN; this complex of failures must significantly disrupt the services offered on the VN. In the present paper, we clarify how the fault tolerance of each VN is affected by a single SN failure, especially from the perspective of VN allocation in the SN. We propose a VN allocation model for multi-tenant data centers and formulate a problem that deals with the bandwidth loss in a single VN due a single SN failure. We conduct numerical simulations (with the setting that has 1.7×108bit/s bandwidth demand on each VN, (denoted by Ci)). When each node in each VN is scattered and mapped to an individual physical server, each VN can have the minimum bandwidth loss (5.3×102bit/s (3.0×10-6×Ci)) but the maximum required bandwidth between physical servers (1.0×109bit/s (5.7×Ci)). The balance between the bandwidth loss and the required physical resources can be optimized by assigning every four nodes of each VN to an individual physical server, meaning that we minimize the bandwidth loss without over-provisioning of core switches.
  • Kimitoshi TAKAHASHI, Kento AIDA, Tomoya TANJO, Jingtao SUN, Kazushige SAGA
    IEICE Transactions on Information and Systems
    2019年 E102.D 巻 5 号 974-987
    発行日: 2019/05/01
    公開日: 2019/05/01
    ジャーナル フリー

    Linux container technology and clusters of the containers are expected to make web services consisting of multiple web servers and a load balancer portable, and thus realize easy migration of web services across the different cloud providers and on-premise datacenters. This prevents service to be locked-in a single cloud provider or a single location and enables users to meet their business needs, e.g., preparing for a natural disaster. However existing container management systems lack the generic implementation to route the traffic from the internet into the web service consisting of container clusters. For example, Kubernetes, which is one of the most popular container management systems, is heavily dependent on cloud load balancers. If users use unsupported cloud providers or on-premise datacenters, it is up to users to route the traffic into their cluster while keeping the redundancy and scalability. This means that users could easily be locked-in the major cloud providers including GCP, AWS, and Azure. In this paper, we propose an architecture for a group of containerized load balancers with ECMP redundancy. We containerize Linux ipvs and exabgp, and then implement an experimental system using standard Linux boxes and open source software. We also reveal that our proposed system properly route the traffics with redundancy. Our proposed load balancers are usable even if the infrastructure does not have supported load balancers by Kubernetes and thus free users from lock-ins.

  • 笹倉 健一
    電気設備学会誌
    2015年 35 巻 3 号 179-182
    発行日: 2015/03/10
    公開日: 2015/03/27
    ジャーナル フリー
feedback
Top