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Description
HP ProCurve 2810-48G, 48-port Gigabit Switch P/N: J9022A, J6022-60001NEW Open BoxQuality of Service (QoS) Class of Service (CoS) sets the IEEE 802. 1p priority tag based on IP address, IP Type of Service (ToS), Layer 3 protocol, TCP UDP port number, source port, and DiffServ Layer 4 prioritization enables prioritization based on TCP UDP port numbers Traffic prioritization (IEEE 802. 1p) allows real time traffic classification with support for eight priority levels mapped to four queues Connectivity Dual personality functionality
Quality of Service (QoS)
- Class of Service (CoS) — sets the IEEE 802.1p priority tag based on IP address, IP Type of Service (ToS), Layer 3 protocol, TCP/UDP port number, source port, and DiffServ
- Layer 4 prioritization — enables prioritization based on TCP/UDP port numbers
- Traffic prioritization (IEEE 802.1p) — allows real-time traffic classification with support for eight priority levels mapped to four queues
Connectivity
- Dual-personality functionality — four 10/100/1000 ports or SFP slots for optional fiber connectivity such as Gigabit-SX, -LX, and -LH, or 100-FX
Resiliency and high availability
- IEEE 802.3ad Link Aggregation Protocol (LACP) and HP port trunking — support up to 24 trunks, each with up to 8 links (ports) per trunk
- IEEE 802.1s Multiple Spanning Tree — provides high link availability in multiple VLAN environments by allowing multiple spanning trees; provides legacy support for IEEE 802.1d and IEEE 802.1w
- Optional redundant power supply — provides uninterrupted power (provided by HP 600 RPS/EPS)
Manageability
- sFlow (RFC 3176) — wire-speed traffic accounting and monitoring
- RMON (remote monitoring) — provides advanced monitoring and reporting capabilities for statistics, history, alarms, and events
- Dual flash images — provides independent primary and secondary operating system files for backup while upgrading
- Troubleshooting — ingress/egress port monitoring enables network problem-solving
- Single IP Address Management — single IP address management for a virtual stack of up to 16 switches
- Multiple configuration files — allow multiple configuration files to be stored to a flash image
Layer 2 switching
- VLAN support and tagging — supports IEEE 802.1Q (4,094 VLAN IDs) and 256 VLANs simultaneously
- GARP VLAN Registration Protocol — allows automatic learning and dynamic assignment of VLANs
- Jumbo packet support — supports up to 9220-byte frame size to improve the performance of large data transfers
Security
- Port security — allows access only to specified MAC addresses, which can be learned or specified by the administrator
- Protected ports — provides increased security by allowing specified ports to be isolated from all other ports on the switch; the protected port or ports can communicate only with the uplink or shared resources
- MAC address lockout — prevents particular configured MAC addresses from connecting to the network
- Multiple user authentication methods —
- IEEE 802.1X — is an industry-standard method of user authentication using an IEEE 802.1X supplicant on the client in conjunction with a RADIUS server
- Web-based authentication — similar to IEEE 802.1X, it provides a browser-based environment to authenticate clients that do not support the IEEE 802.1X supplicant
- MAC-based authentication — client is authenticated with the RADIUS server based on the client's MAC address
- Switch management logon security — can require either RADIUS or TACACS+ authentication for secure switch CLI logon
- Multiple IEEE 802.1X users per port — provides authentication of up to two IEEE 802.1X users per port; prevents user "piggybacking" on another user's IEEE 802.1X authentication
- STP BPDU port protection — blocks Bridge Protocol Data Units (BPDUs) on ports that do not require BPDUs, preventing forged BPDU attacks
- Secure FTP — allows secure file transfer to and from the switch; protects against unwanted file downloads or unauthorized copying of a switch configuration file
- RADIUS/TACACS+ — eases switch management security administration by using a password authentication server
- Source-port filtering — allows only specified ports to communicate with each other
- Secure Shell — encrypts all transmitted data for secure remote CLI access over IP networks
- Secure Sockets Layer (SSL) — encrypts all HTTP traffic, allowing secure access to the browser-based management GUI in the switch
Convergence
- IP multicast snooping and data-driven IGMP — automatically prevent flooding of IP multicast traffic
- IEEE 802.1AB Link Layer Discovery Protocol (LLDP) — is an automated device discovery protocol that provides easy mapping of network management applications
- Per-port broadcast throttling — selectively configures broadcast control on heavy traffic port uplinks
- Software updates — free downloads from the Web
Ease of use
- Locator LED (switch) — allows users to set the locator LED on a specific switch to either turn on, blink, or turn off; simplifies troubleshooting by making it easy to locate a particular switch within a rack of similar switches
- Friendly port names — allow assignment of descriptive names to ports
- Find-Fix-and-Inform — finds and fixes common network problems automatically, then informs administrator
- HP/IEEE Auto-MDIX — automatically adjusts for straight-through or crossover cables on all RJ-45 ports
Warranty and support
- Lifetime warranty — for as long as you own the product with advance replacement and next-business-day delivery (available in most countries)*
- Electronic and telephone support — limited electronic and telephone support is available from HP; refer to www.hp.com/networking/warrantyfor details on the support provided and the period during which support is available
- Software releases — refer to www.hp.com/networking/warranty for details on the software releases provided and the period during which software releases are available for your product(s)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.8 ★★★★★
Based on 1319 reviews
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Product Reviews
★★★★★ 4
Foes at the Top Table
Format: Kindle
Those of us who studied economics in the 60s grew up on Keynes. This book provides a fascinating picture of the great man in action. And an equally fascinating picture of the Lend Lease negotiations and then the US hard line at Bretton Woods. Behind this hard line was Harry Woods, of Lithuanian emigre stock, who clawed his way by hard work and intelligence to negotiating prominence in the US Treasury. And who was a Soviet agent of influence. Well written, lucid, and remarkably interesting.
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Reviewed in the United States on May 19, 2013
★★★★★ 5
A distant mirror of our current problems
Format: Hardcover
The title of this excellent book accurately describes its contents:it is about a battle fought to define a new world order, that which was emerging from the ashes of World War II. The book also conveys the messy complexity of such a historical process--how individual characters interpreted the events around them, realized that they were giving shape to a radically new future, tried to take advantage of them to advance their own personal and national interests, and succeeded in accordance with their intelligence, the cunning of their argumentation, and, above all, the shifts in the real power that supported them. Masterly, Benn Steil makes the reader feel how Keynes and White gradually reached an unspoken and unrecognized agreement regarding the shape that the new world would have, and then fought to gain advantage in that new world--Keynes trying to keep the British Empire paramount in the world order, now based not on the Royal Navy but on Britain's alliance with the United States, the emerging superpower, and White asserting the unimpeded power of the United States. Focusing on one crucial aspect of the new order, money, Steil is able to reenact the human drama of the transfer of world power from Britain to the United States in all orders of life. It is an excellent history book.
The book, however, goes beyond history as the narration and understanding of past events. When reading it, there is an eerie feeling that you are reading about current events. The process that led to Bretton Woods started thirty years before, with World War I and the end of the classical gold standard. When the war ended, a new monetary system was created, which was called the gold exchange standard. It resembled but emasculated the power of the old gold standard to keep monetary order in the world at large. This new system gave central banks the power to create money independently of the international consequences of doing it. With time, central banks abused this power, created a boom in the 1920s and then a depression in the 1930s. Bretton Woods was convened to reintroduce order in the monetary world. Like the gold standard of old, the new system created there was tied to gold in an effort to ensure stability. Yet, it also allowed central banks freedom to create money under certain circumstances. As it happened in the 1920s and 1930s, central banks abused their power, blew up the international system (in this case the Bretton Woods system) and then led the world into a series of booms and busts that has not ended as yet. A new monetary order will be needed to avoid worldwide inflation and protracted recessions. To understand the issues that will be crucial to give shape to this new monetary order it will be necessary to revisit the making of Bretton Woods in detail. There is no better way to understand these issues that Ben Steil's The Battle of Bretton Woods. Thus, in addition to being an excellent history book, it is also an excellent book about current events.
Full disclosure: I wrote a previous book with Benn Steil: Money, Markets and Sovereignty (Yale University Press, 2009).
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Reviewed in the United States on May 28, 2013
★★★★★ 5
The Battle of Bretton Woods
Format: Hardcover
From the growing reliance upon international finance and the devastating repercussions of two World Wars, Steil weaves together an important narrative that tells the story of America's rise to the world stage as a major power. Britain's reign of dominance comes to an abrupt end under the weight of the Second World War and the dependence of their territories. Reliance on foreign aid and mounting debt put Britain in a precarious situation for which the United States capitalized on to secure its place as the dominant world power. Through the ideas and experiences of two brilliant economists, Harry White and John Keynes, were guided through the creation and implementation of an economic solution to remedy, and further amalgamate the global financial framework. At Bretton Woods, White and Keynes promote slightly different plans that form the International Monetary Fund and World Bank; organizations designed to monitor, stabilize, and assist international finance. To Britain, and much of the world's chagrin, the organizations are formed in a manner that benefited the United States post-World War Two position as a creditor nation. Dollar dominance in the newly designed financial markets promotes short-term growth for the United States. However, financial mismanagement and over-extension soon lead the U.S. down a path of monetary hardship that ultimately results in our current situation as debtor nations (much like Britain was when the story began). The author ends the narrative by chronicling the effects of Bretton Woods on the United States, Britain, and international finance from the mid-twentieth century to the present. This book tells the remarkable story of America's rise to power through a financial lens. Steil is a wonderful writer who describes complex ideas of monetary policy, international economics, and currency manipulation in such a manner that is easy to understand and leaves the reader wanting more.
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Reviewed in the United States on August 16, 2013
★★★★★ 5
A concise, readable history of European developments prior to W.W. i.
Format: Paperback
This is part of a 4 volume series on (primarily) European history covering the development of the French and Industrial revolution(s) with particular emphasis on the Belle Epoque that marked the end of nearly 100 years of peace among the European Powers. It covers a variety of topics ranging from the emergence of the working classes; the role of the middle class; industrial capitalism; nationalism; the sciences and the arts; and, even a chapter on the "New Woman". Quite encompassing in its treatment and its analysis of the a period that serves as a background to the twentieth century.
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Reviewed in the United States on August 3, 2018
★★★★★ 5
Un comentario
Format: Paperback
El mundo burgués generó desarrollos muy importantes para los habitantes de Europa Occidental particularmente; incrementó de manera importante los niveles de vida de una porción significativa de la sociedad, introdujo innovaciones claras en las ciencias, en lo educativo, en el comercio global y en el intercambio entre diferentes culturas. Mejoró la productividad, las comunicaciones, la alimentación......Pero también incorporó consigo tendencias negativas y difíciles que cambiaron para siempre la interrelación entre pares al crearse una diferencia significativa de clases, la alta, burguesa y la trabajadora y proletaria, continuó la discriminación sobre la campesina, estableció el concepto forzado de nacionalismo, transformó a los países mas desarrollados en imperios con ansias de crecimiento y de dominio de los menos preparados, se evidenció la explotación del tercer mundo, se inició el armamentismo y la instigación a la guerra que culminó con la desastrosa confrontación de 1914. El mundo, a partir de ese momento no volverá a ser igual.
Todos estos conceptos, esta historia, están amenamente descritos por el autor, con un gran conocimiento de la época y con una inteligente asociación de los acontecimientos para hacer entender al lector sus grandes transformaciones e implicaciones.
Como los otros tres libros de la serie, lo recomiendo ampliamente. Permite entender todo la evolución de nuestra civilización en los dos últimos siglos así como la influencia generada por los grandes imperios de la época y sus pensadores
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Reviewed in the United States on November 28, 2011