政府と防衛

テストする。改善する。繰り返す。

Aerospace and defence networks must offer robust, reliable, and secure data communication given the critical nature of their operations and the stringent safety and security requirements.

AFDX ARINC 664 / IEEE P802.1DP

Both commercial and military data communication networks increasingly rely on Ethernet technologies, such as the AFDX ARINC 664 standard and the IEEE P802.1DP profile. These standards add deterministic features to ensure data packets are delivered reliably within a predictable timeframe. They also include prioritization of different types of traffic using Quality of Service (QoS) features and redundancy in the event of network failures.

Device and network testing

Devices, such as Ethernet switches, and networks for aerospace and defence applications must be thoroughly tested and validated before being put into operation. The three key characteristics that need to be tested are:

Reliability and availability
Real-time performance and deterministic behavior
Security and data protection

Reliability and availability testing

These tests focus on validating the device or network’s uptime, fault tolerance, redundancy, and failover mechanisms to ensure continuous operation under various conditions, including high loads and equipment failures. A typical test setup could look like the one below:

The E100 Chimera network emulators simulate typical network impairments such as latency variations, jitter, and link loss. The Devices Under Test (DUTs) can either generate Ethernet flows, or traffic can be inserted and analyzed using traffic generators like the Z100 Loki.

Real-time performance and deterministic behavior

These tests measure the network’s ability to meet stringent timing requirements and deliver consistent performance under varying traffic loads and environmental conditions. See below for a typical test setup.

Traffic generators are used to generate and analyze large amounts of flows with various Classes of Service (CoS) and loads to validate throughput and latency performance for mixed types of traffic classes, including high-priority/lossless data and best-effort traffic.

Security and data protection

These tests focus on validating the devices’ ability to block malicious traffic and only allow benign traffic. Again, see right for a typical test setup.

The traffic generators insert packet flows with various headers and payloads to validate that the DUT blocks packets and content as defined by the appropriate rules.

Additionally, the Xena Ethernet test platform offers a range of predefined DDoS templates for testing the DUT against common threats.

How Teledyne LeCroy helps test the performance of Ethernet-based systems used on modern battlefields.

Interconnected Battlefield

戦場のさまざまなグループと、その作戦を調整するグループとの間で、情報が迅速かつ円滑に流れるようにすることが不可欠だ。
イーサネットは、こうしたアドホック・ネットワークで最も頻繁に使われる技術だ。
This document looks at how Teledyne LeCroy’s Ethernet test solutions are used to validate the resilience and performance of devices and services on the interconnected battlefield.

WIN-T

Warfighter Information Network-Tactical

Platforms like WIN-T (Warfighter Information Network-Tactical) allow forces to securely transmit real-time video, view maps, request artillery support, access mission command applications and connect with commanders. This requires resilient high-speed, low latency networks.

JTIDS

Joint Tactical Information Distribution System

Other systems – like JTIDS – allow a strategic sharing of information between partner countries and agencies. This demands interoperability and a secure network.

Ethernet Everywhere

The networking technology most frequently used for connecting units on battlefield and in command centres is Ethernet. Ethernet can handle very large amounts of data – the top speed is now 800Gbps.

Using Ethernet also ensures interoperability. It is a tried and tested technology based on well-defined international standards that all suppliers support. As a result, ethernet is used ubiquitously by the military. The trend is to go with existing COTS switches and other core networking devices and ruggedize them for use on the battlefield. We have over 10 years’ experience in testing the performance and features of such devices.

Simple Scenario using Ethernet

1.Soldiers may have a Rifleman or ShadowCat Radio plus a NettWarrior smartphone connected via a standard RJ45 Ethernet cable or a military M12 style connector.

2.This lets them access data feeds from overhead drones, JTIDS command station or air support. They can communicate securely with other units and receive precise GPS data.

The Ethernet switches used in these devices are ruggedized COTS switches. They allow the broadest range of interconnecting devices where there are very few – if any – protocol requirements.

The Ethernet interface allows connectivity to other devices without the need to know about security technologies such as encryption or frequency hopping.

相互接続された戦場

戦場のさまざまなグループと、その作戦を調整するグループとの間で、情報が迅速かつ円滑に流れるようにすることが不可欠だ。

イーサネットは、こうしたアドホック・ネットワークで最も頻繁に使われる技術だ。

本書では、Xena イーサネット・テスト・プラットフォームが、相互接続された戦場におけるデバイスとサービスの回復力と性能を検証するためにどのように使用されているかを見ていく。

今すぐ読む

Xena政府・防衛向けテストソリューション

幅広いテストモジュール

Xena プラットフォームは、10以上のイーサネット・トラフィック・ジェネレータを備えており、10Mbpsから800Gbpsまでのすべてのイーサネット速度を簡単かつコスト効率よくテストすることができます。

これらはE100qChimeraネットワーク・エミュレータとシームレスに連動し、ジッターやレイテンシー（最大100Gbps）などの包括的な障害を追加して、ラボでの実環境をシミュレートします。

使いやすいソフトウェア

Xenaのテスト・ソリューションには、イーサネット・トラフィックを生成し、結果を分析するための豊富な機能を備えたソフトウェアが含まれている。主なツールはXenaManagerです。

また、RFC2544、RFC2889、RFC3918、Y.1564 などの標準的なテストを実行するためのテスト・スイートや、特殊なAN/LT テストも用意されています。さらに、あらゆる OS 上で動作する Python API を備えたオープンソースのテスト自動化フレームワークであるXena OpenAutomation (XOA) など、強力なスクリプトやテスト自動化オプションも包括的に用意されています。