HP J9050A Networking Switch 48 Port
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J9050A HP ProCurve 2900-48G 48 Ports Switch.. Refurbished

Availability: In Stock
Part Number#: J9050A
List Price was: $915.38
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Short Description:
J9050A HP ProCurve 2900-48G 48 Ports Switch. Refurbished.
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Rapid Spanning Tree Protocol (RSTP)

Rapid Spanning Tree Protocol (RSTP) is a network protocol used to prevent loops in a network topology. It operates at the data link layer (layer 2) of the OSI model and helps to ensure that there is only one active path between two network devices. This is important in preventing network loops, which can cause broadcast storms and lead to network downtime.

RSTP is an evolution of the Spanning Tree Protocol (STP), and it provides faster convergence times in the event of network changes. RSTP uses a new set of messages and algorithms to determine the active network paths, allowing it to quickly reconfigure the network in the event of a link failure. This results in improved network stability and reduced downtime.

RSTP is a standard protocol and is supported by most modern switches. It is commonly used in large networks where the rapid reconfiguration of network paths is important. By using RSTP, network administrators can ensure that the network is able to quickly adapt to changes and maintain stability, even in large and complex networks.

Security Features Management

Security Features Management refers to the process of implementing and managing security measures in a network environment to protect against threats and unauthorized access. This can include a variety of different security measures, such as firewalls, intrusion detection and prevention systems, encryption, and access control lists (ACLs).

Security Features Management is an important part of network administration, as it helps to ensure the confidentiality, integrity, and availability of network resources. This is especially important in large and complex network environments, where the risk of security breaches is higher.

The process of Security Features Management typically includes the following steps:

  • Identifying potential security threats: This involves analyzing the network environment to identify potential security risks and vulnerabilities.
  • Developing a security plan: Based on the results of the threat analysis, a security plan can be developed to address the identified risks.
  • Implementing security measures: This involves installing and configuring the necessary security measures to protect the network.
  • Monitoring and updating security measures: Ongoing monitoring of the network environment is necessary to ensure that security measures are effective and to update them as necessary to stay ahead of new threats.
  • Responding to security incidents: In the event of a security breach, a rapid response is necessary to minimize the impact and restore the network to normal operation as quickly as possible.

Access Control Lists (ACLs)

Access Control Lists (ACLs) are used to control network traffic and to define who is allowed to access network resources. An ACL is a set of rules that determine which packets are permitted to enter or leave a network. These rules can be based on various factors, such as the source and destination IP address, the type of traffic, or the port number.

ACLs can be used to implement security policies and to restrict access to sensitive network resources. For example, an ACL can be used to deny traffic from known malicious IP addresses, or to allow only specific types of traffic to enter a network.

ACLs are typically implemented at the network layer (layer 3) of the OSI model. They can be applied to specific interfaces on a network device, such as a router or switch, or to a group of interfaces.

There are two main types of ACLs: standard ACLs and extended ACLs. Standard ACLs are used to filter traffic based on source IP addresses, while extended ACLs can be used to filter traffic based on a wider range of criteria, such as destination IP address, port number, and protocol type.

ACLs are a powerful tool for network administrators and play an important role in securing networks and ensuring the availability of network resources.

General Information:

  • Device Type : Switch - Stackable
  • Form Factor : External - 1u
  • Empty Slots : 4 X Shared Sfp (Mini-Gbic) / 2 X X2
  • Encryption Algorithm : Ssl
  • Authentication Method : Radius, Tacacs+, Secure Shell V.2 (Ssh2)


  • Ports Qty : 48 X Ethernet 10base-T, Ethernet 1000base-T, Ethernet 100base-X
  • Auxiliary Network Ports : 2x10gbase-Cx4
  • Data Transfer Rate : 1 Gbps
  • Data Link Protocol : Ethernet, Fast Ethernet, Gigabit Ethernet
  • Routing Protocol : Static Ip Routing
  • Remote Management Protocol : Snmp 1, Rmon 1, Rmon 2, Rmon 3, Rmon 9, Telnet, Snmp 3, Snmp 2c, Http
  • Connectivity Technology : Wired
  • Switching Protocol : Ethernet
  • Status Indicators : Link Activity, Port Transmission Speed


  • Processor : 1 X Freescale Powerpc : 667 Mhz


  • Ram : 22.5 Mb Sdram
  • Flash Memory : 4 Mb Flash
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

About Refurbished Products

Refurbished products are typically refurbished by an Original Manufacturer or an affiliate of the manufacturer or 3rd party facility. This product may have minor blemishes due to normal product usage and doesn't necessarily come with documentation and software unless indicated, but has been well tested and generally has never had any defects.


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ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
Final Sale items are non-returnable/refundable in any situation. Any question? please ask our team before the shipment.

Important notes:

We can provide additional warranty service/support for any product you purchase from us if you need additional warranty coverage before finalizing the order from ALLHDD.Com. You need to ask in live chat/help or call us for more information.

Individual product warranty mentioned on each item product description page/detail page.

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Shipping Options and Estimated Delivery Time

UPS Shipping Options:

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FedEx Shipping Options:

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FedEx First Overnight®
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Worldwide Shipping Options:

UPS®/FedEx® International Economy

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UPS®/FedEx® International Priority

Estimated delivery time: 2-4 business days

UPS®/FedEx® Ground Shipping Canada

Estimated delivery time: 5-8 business days

Important notes:

  • The processing of orders with Ground Shipping can take up to 24-48 hours. But we try to process all orders the same day.
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