Military Communications and Information Technology: A Trusted ...

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188 Military Communications and Information Technology... VI. CoNSIS convoy test network A. Multi-Topology routing SW We have implemented 3 the Multi-Topology support for OSPFv3 and OSPFv2, as well as MANET OSPFv3 (MDR) [19] into the Vyatta [20] Linux distribution. This is based on the Quagga [21] open source routing application running on a Debian system with Linux kernel 2.6.37 (ATOW). The MANET OSPFv3 base protocol was fetched from [22]. The router implementation allows easy configuration of OSPFv2-MT and OSPFv3-MT information. Metrics can be setup for each topology on each interface. The Linux platform is set up to utilize multiple forwarding tables and Quagga’s interface towards forwarding tables in Linux has been adjusted to allow the use of multiple routing tables. In addition to OSPFv2-MT and OSPFv3-MT routing, the implementation also supports configuration of static MTroutes. A flexible import and redistribution of routes from other routing protocols is supported, as well as customized export of MT-routes to the main routing table to make the routes available to other routing protocols. Due to experienced instabilities in the MANET OSPFv3-MT protocol we will use OSPFv3-MT in the CoNSIS field experiment. It should also be noted that the expanded encoding of the OSPF Options described in the draft [1] is in conflict with bits allocated by OSPF Link-Local signaling [23]. Link-Local Signaling is also part of the MANET OSPFv3 implementation. B. The CoNSIS convoy platforms The land mobile network component in the CoNSIS network architecture is represented by a multinational convoy in the scenario and in the field test. The network consists of a German (Nation 1) and a Norwegian (Nation 2) convoy segment. Each segment consists of four mobile nodes. The convoy network is connected to a multi-national deployed headquarter (Fig. 3). The NGO vehicles also have a network connection to the military convoy, however this connection is not visible in Fig. 3 since this network is not allowed to be part of the unprotected coalition transport network. Traffic is sent to/from the NGO segment via application gateways handled by other CoNSIS task groups. The Convoy network consists of five different radio networks. It is therefore a highly heterogeneous MANET. Table I give some details of the radios that will be utilized in the planned CoNSIS experiment. The network is used for internal convoy communication and reach-back to the deployed headquarters. 3 The implementation is done by Thales Norway AS
Chapter 2: Communications and Information Technology for Trusted... 189 Table I. Radios used in the CoNSIS Convoy test network Nation 1 SatCom Nation 1 UHF Network1 Nation 1 VHF Network Nation 1 UHF Network2 Nation 2 UHF Network Radio Type Thrane &Thrane BGAN Ex. 727 IABG HiMoNN Harris RF-7800S Rockwell Collins FlexNet-Four Kongsberg WM600 a) The data rates are approximate values Number of radios in the network unknown Shared channel data rate a 384 kb/s 6 11 Mb/s 5 64 kb/s 3 1 Mb/s 6 920 kb/s The different transmission technologies present in the planned experimental network have substantially different characteristics when it comes to e.g., transmission delay, transmission range and data rate. Given the heterogeneous network as described above, the end-to-end network capacity could change from a relatively high data rate of several Mb/s to a few tens of Kb/s when a node moves from UHF coverage to a path that includes one or more VHF and/or SatCom on the move links. This large variation in available data rate is difficult to handle for the resource management entity. In such a scenario it is also important that the network is able to prioritize the mission critical data traffic in overload situations. Figure 3. The land mobile network in CoNSIS
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Military Communications and Informa
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Contents Foreword .................
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Contents 5 Methodology for Gatherin
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8 Military Communications and Infor
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Building a Layered Enterprise Archi
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Chapter 1: Concepts and Solutions f
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Applying NAF for Performance Analys
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Openness in Military Systems Jessic
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The Concept of Integration Tool for
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CFBLNet: A Coalition Capability Ena
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Selected Aspects of Effective RCIED
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84 Military Communications and Info
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100 Military Communications and Inf
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Chapter 2 Communications and Inform
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Run-Time Ontology on the Basis of E
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Chapter 3: Information Technology f
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A Robust and Scalable Peer-to-Peer
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Automatic Exploitation of Multiling
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Information Fusion Under Network Co
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Commanding Multi-Robot Systems with
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Application of CID Server in Decisi
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Managing Lessons Learnt from Daily
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Federated Cyber Defence System - Ap
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Development of High Assurance Guard
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Network Traffic Characteristics for
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Methodology for Gathering Data Conc
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On Multi-Level Secure Structured Co
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Generation of Nonlinear Feedback Sh
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Modern Usage of “Old” One-Time
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A Abut Fatih 161 Akcaoglu Ismail 11
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