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Avaya releases IP Office 8.0
Avaya unveiled the latest version of the company's unified communications (UC) solution for small and midsize enterprises (SME) with the release of Avaya IP Office 8.0. The new version includes enhancements designed to improve collaboration with mobile capabilities. Avaya's latest mobile application builds on the previously available Essential Mobility solution for IP Office.
The new mobility application, called "one-X Mobile Preferred for IP Office," provides unified communications capabilities on Android-compatible devices now, with plans to offer UC features on iPhone devices set for early 2012. Key features include:
• Multi-party conference management using a mobile device so users can invite, view, mute and drop participants during a conference call.
• Integrated presence so users to display and view availability status updates like "available" or "do not disturb." Availability can also be displayed based on a user's Microsoft Outlook calendar.
• Instant Messaging making it easier for worker to find business colleagues via an integrated corporate directory and initiate a text chat with multiple co-workers simultaneously.
• "Geopresence" displays physical locations anywhere in the world in places like hospitals, hotels or companies so employees can quickly identify a co-worker's physical location.
• A Visual Voicemail feature that displays voicemails on their mobile device with date/time information on the mobile device. Users can also hear messages More >
Lippis Report Tests Show that Extreme Networks BlackDiamond X8 is the Largest Capacity Cloud Switch
Groundbreaking full mesh configuration test of 192 40GbE ports at wire speed confirms highest capacity in the network industry and ultra-low latency of 2.3 microseconds
SANTA CLARA, Calif., Jan 16, 2012 /PRNewswire/ — Extreme Networks®, Inc. (Nasdaq: EXTR) today announced further results of independent performance tests by Lippis Reports for the BlackDiamond® X8 modular switch. Recent tests at Ixia's state-of-the-art iSimCity testing facility demonstrated that the BlackDiamond X8 achieved lossless throughput performance when tested under cloud simulation conditions, superior energy efficiency to other products tested, and ultra-low latency.
Under cloud network conditions, the Extreme Networks BlackDiamond X8 demonstrated 192 wire-speed 40GbE ports configured in in a full mesh. The switch performed remarkably with lossless throughput at 100% bi-directional capacity with the ports demonstrating the lowest latency of all 10 and 40 GbE modular switches tested, at 2.3 microseconds for 64 byte packets.
"The combination of ultra-low latency and power consumption on a platform that supports 768 10GbE or 192 40GbE scale is unprecedented," said Nick Lippis, chief industry analyst and publisher of the Lippis Report. "The BlackDiamond X8 is the largest capacity Ethernet switch tested and the full mesh test of 192 40GbE ports without a single packet lost is groundbreaking, setting a new performance standard in the network industry while paving More >
5 priorities for HP in data center switching
HP and Cisco are currently embroiled in a war of words, market share and revenue in Ethernet switching overall, but can HP really put up much of a fight in the data center?
The data center is where virtually all of the action in switching is right now. And HP is a leading vendor of data center blade switches. But the company appears to be treading water in high-density 10 Gigabit top-of-rack switches and in the data center core.
As rivals like Cisco, Brocade and Juniper unleash more 10G switches to address top-of-rack and core requirements, HP is conspicuously quiet even after spending $2.7 billion in 2009 to acquire 3Com. A big reason for buying 3Com, according to HP, was its data center switching portfolio — chiefly, the A12500 core switch and the A5820 top-of-rack device. HP also offers the A7500 and A9500 for data center aggregation and smaller cores.
HP has been largely silent about the A12500's progress and that of the A5820 since the 3Com acquisition. HP did unveil a four-port Fibre-Channel-over-Ethernet module for the A5820 last year, and claims its A12500 is a leading platform in data centers in China; but beyond that, the company has largely been missing in action while its competitors broaden More >
Cisco unveils dual-role data center
Cisco this week opened up a new data center in Research Triangle Park, N.C., with a dual role: application development and disaster recovery (DR) for its production data centers in Texas.
The 2.8 Megawatt, 18,500 square foot retrofitted data center is a Tier 2 facility, meaning it isn't as resilient as Tier 1 facilities. It's pretty efficient though, according to Cisco, which put its Power Usage Efficiency measure at 1.4, compared to 1.34 at the company's Allen, Texas, facility and 1.9 in Richardson, the two data centers the new RTP1 facility will initially back up.
Cisco plans to have RTP1 serve as a production backup for other Cisco global data centers, says company IT official Jim Cribari. It's also a showcase of Cisco technology and implementation techniques for customers, and to prove that they do not need a separate physical facility for DR.
"It shows customers how to maximize their investment in DR and application development environments," Cribari says.
RTP1 is the oldest building in Cisco's Research Triangle Park campus. As a data center, it has a capacity of 438 racks housing up to 5,000 Unified Computing System (UCS) blades and 125,000 virtual machines, with an average usage of 6.5 kilowatts per rack. The facility More >
Cisco Accelerates Innovation in Data Center Virtualization with Microsoft
SAN JOSE, Calif. – Sept. 20, 2011 – Today Cisco announced it is collaborating with Microsoft to deliver data center virtualization solutions designed to provide improved scalability and operational control of Microsoft Windows Server "8" virtual environments. The Cisco Nexus® 1000V distributed virtual switch and the Cisco Unified Computing System™ with Virtual Machine Fabric Extender (VM-FEX) capabilities will work with the Windows Server Hyper-V hypervisor to provide customers with advanced Cisco networking features that are constant across both virtual and physical networks while supporting customers' existing IT management processes.
Key Highlights:
Cisco Nexus 1000V Virtual Switch Offers Enhanced Visibility, Control and Operational Flexibility for Hyper-V Environments:
- The Cisco Nexus 1000V distributed virtual switch adds the dynamic provisioning and management capabilities of Cisco NX-OS Software to Windows Server Hyper-V to simplify the operations of virtual networking infrastructures as extensions of physical networks. It also provides full VM-level visibility, security controls in a virtualized environment that are consistent with their Cisco physical network.
- Cisco's policy enforcement, automated provisioning and diagnostics features are available through Cisco Nexus 1000V, and will help IT administrators to rapidly deploy virtual workloads in Windows Server Hyper-V environments and scale to very large data centers.
- By working with Microsoft System Center Virtual Machine Manager (VMM) management tools, the Cisco More >
Juniper follows Cisco with edge upgrade
New switch fabric scales MX 3D line to 3.8Tbps
Juniper this week enhanced its service provider edge routers to address growing bandwidth requirements of emerging mobile, cloud computing and enterprise network applications.
Juniper increased the capacity of its MX 3D edge routers to 3.8Tbps. The capacity improvements apply to all MX series services, Juniper says, including the company's new MobileNext mobile core platform for wireless networks.
The previous switch capacity on the MX series was 2.6Tbps.
The upgrade can be achieved through an in-service switch fabric exchange to existing MX series chassis, Juniper says. The company also claims the MX can now support up to three times as many subscribers and double the platform and rack capacity of competitive platforms at less than one-third the total power consumption.
The MX requires less than 4 watts per gigabit of processed traffic, Juniper says.
A single MX960 can support 8 million mobile subscribers or 10,000 business VPNs. It can also process more than 8 billion views on YouTube a day, more than two times the average daily views of the website globally, Juniper says.
The new switch fabric for the MX Series is shipping now. It will go up against Cisco's ASR 9000 series, which Cisco says can scale to 6.4Tbps; and Alcatel-Lucent's More >
Extreme Networks Introduces Compact and Long-Range Wi-Fi Solution Targeting Education and Hospitality Markets
New Long-Range Wi-Fi Devices Benefit Hotels and Education Institutions by Significantly Lowering the Cost of Wireless Network Upgrades
SANTA CLARA, Calif., Sep. 19, 2011 /PRNewswire/ — Extreme Networks, Inc. (Nasdaq: EXTR) today announced a "Snap-on" Wi-Fi solution, the Altitude™ 4511 wallplate access point, in conjunction with Motorola Solutions (NYSE: MSI), that addresses college campuses and multiple dwelling unit (MDU) buildings. The wireless local area network (WLAN) solution is designed to use the network that's already in place. Hotels, colleges and multi-unit dwellings are faced with tremendous growth in the number of Wi-Fi capable devices and wireless applications they service. Now, they can 'snap-on' these long-range 802.11n Altitude 4511 Wi-Fi access points to existing Ethernet wall jacks and obtain an increase in power of up to tenfold over other Wi-Fi solutions available in the market.
At the heart of the W-Fi solution are compact Altitude 4511 wallplate access points (iPhone-sized devices) that 'snap-on' to existing Ethernet ports. They feature a 400mW radio, compared to some solutions that operate at 40mW, giving them a boost for increased coverage of up to three times. Each long-range device (26 dBm) can service up to 10 rooms at a time, making it possible to cover a 200-unit building in hours, More >
Уязвимость — Атака Source MAC address spoofing DOS
Flooding атака на большой L2 сети хорошо известна, существует множество способов предотвратить ее, например: функция storm control на коммутаторах Catalyst. А теперь представьте, что вы измените МАС — адрес источника каждого пакета, отправленного на воплне правильный unicast адрес.
Коммутатор, получая ваш трафик, пытается изучить каждый новый МАС адрес, в связи с чем быстро закончится ТСАМ. К примеру, Catalyst 3560 может хранить до 12,000 МАС — адресов, после чего, старые (но вполне правильные) МАС адреса будут удалятся из ТСАМ и трафиком направленым к ним, будет заполнена вся сеть. Если расчеты верны, то понадобится менее 100 миллисекунд, чтобы заполнить таблицы коммутатора, используя 100 — байтные фреймы на 100 Мегалитом линке.
Вы можете с легкостью предотвратить эту атаку в корпоративной сети, где вы можете использовать защитные функции, такие как защита МАС — адресов, но вы не сможете использовать тоже самое в операторской сети, в которой разрешено выделенным клиентам использовать те МАС — адреса, которые им нравятся. Если ваш оператор поддерживает 802.1ah (MAC-in-MAC encapsulation), атака затронет только коммутаторы доступа, подключенные к тому же I-SID (клиенту). Опорные коммутаторы никогда не увидят МАС — адреса клиентов. Если вы используете 802.1ad (Q-in-Q), все L2 коммутаторы пострадают от атаки.
Есть, по меньшей мере, два варианта защиты от этой атаки, это ограничить More >
D-Link представила новые беспроводные VoIP-маршрутизаторы D-Link DVG-N5402FF/GF/S
Компания D-Link представляет новые VoIP-маршрутизаторы DVG-N5402FF, DVG-N5402GF, DVG-N5402SP со встроенной точкой доступа 2,4 ГГц (до 300 Мбит/с), предназначенные для подключения традиционных аналоговых телефонных аппаратов и факсов к сетям IP-телефонии и маршрутизации данных в сетях сектора SOHO. DVG-N5402FF/GF/SP позволяют сокращать расходы на междугородние звонки, обеспечивая при этом высокое качество голосовой связи.
VoIP-маршрутизаторы доступны в следующих конфигурациях:
- DVG-N5402FF – 2 порта FXS, 1 оптический порт WAN 100Мбит/с (SFP), 1 медный порт WAN 10/100Мбит/с, 4 порта LAN 10/100Мбит/с, 1 порт USB 2.0, точка доступа 802.11n;
- DVG-N5402GF – 2 порта FXS, 1 оптический порт WAN 1000Мбит/с (SFP), 1 медный порт WAN 10/100/1000Мбит/с, 4 порта LAN 10/100/1000Мбит/с, 1 порт USB 2.0, точка доступа 802.11n;
- DVG-N5402SP – 2 порта FXS, 1 порт FXO с поддержкой функции PSTN Lifeline, 1 медный порт WAN 10/100/1000Мбит/с, 4 порта LAN 10/100/1000Мбит/с, 1 порт USB 2.0, точка доступа 802.11n;
Наличие в DVG-N5402SP двух FXS-портов и одного FXO-порта (Lifeline) позволяет подключать к маршрутизатору два телефонных аппарата и телефонную линию. В случае отключения питания устройство автоматически подключает ТфОП, и телефонная линия всегда остается доступной. VoIP-маршрутизаторы DVG-N5402FF/GF/SP поддерживают основные функции SIP, включая перенаправление, переадресацию и удержание вызовов, отображение идентификатора звонящего, трехстороннюю конференцию, ускоренный набор, hot line и warm line. Применение таких технологий как эхоподавление, VAD, CNG, динамический Jitter-буфер, позволяет обеспечить отличное More >
Extreme Networks расширила линейку Gigabit Ethernet коммутаторов
Extreme Networks расширила линейку Gigabit Ethernet коммутаторов для границы ядра сети, запуском нового семейства Gigabit Ethernet коммутаторов. Новые 24-х портовые PoE и non — PoE Gigabit Ethernet коммутаторы призваны обеспечить универсальность и эффективность затрат доступа к сети. Рынок L2 устройств показал самый быстрый рост за последний в отношении к стоимости порта, показывая, что подключение данного вида, требует на сегодняшний день большого ассортимента. Добавление двух новых моделей коммутаторов в порфтолио производителя, смогут представить производители экономически оптимальный доступ в пограничных и опорных сетях оператора.
Новые коммутаторы серии EAS ожидаются в этом месяце, начальная стоимость EAS-100 начинается с $995, а EAS-200 с $1,995 соответственно.
