The HP J4908A ProCurve 4100GL 20-Ports SFP GigaBit Ethernet Switch has several security features, including
- Access Control Lists (ACLs) to control network access based on IP address and other parameters
- Port security to limit the number of MAC addresses that can be learned on a port
- Secure Shell (SSH) and Secure Sockets Layer (SSL) for secure remote management
- IEEE 802.1x authentication for controlling access to the network based on the identity of the user or device
- Dynamic Host Configuration Protocol (DHCP) snooping to prevent rogue DHCP servers from providing false IP addresses to devices on the network
- IP source guard to prevent IP address spoofing
- Storm control to prevent broadcast and multicast storms from causing network disruptions.
The HP J4908A ProCurve 4100GL 20-Ports SFP GigaBit Ethernet Switch has advanced Quality of Service (QoS) and traffic management capabilities that allow for efficient and effective management of network traffic.
QoS features include:
- Priority queuing: traffic is prioritized based on user-defined rules, ensuring that critical traffic is given priority over non-critical traffic
- Differentiated Services Code Point (DSCP) support: allows for marking of packets based on their type and prioritizing them accordingly
- Bandwidth control: traffic is managed by setting limits on the amount of bandwidth that can be used by specific devices or traffic types
Traffic management capabilities include:
- Link aggregation: allows for multiple links to be grouped together to increase bandwidth and provide redundancy
- Port-based VLANs: traffic is segmented and isolated based on the port it is coming from, providing added security and control
- Spanning Tree Protocol (STP): prevents loops in the network by blocking certain ports, ensuring that only one path is used for data transmission
- Check the power supply: Make sure that the switch is properly plugged into a power source and that the power indicator is lit. If the power indicator is not lit, check the power cord and outlet for proper connections.
- Check the network connections: Make sure that all network cables are securely plugged into the switch and the devices they are connected to. Check for any damaged or frayed cables.
- Check the switch's configuration: Verify that the switch is configured correctly for your network. Check for any incorrect IP addresses or incorrect VLAN settings.
- Check for firmware updates: Check for any available firmware updates for the switch and apply them if necessary.
- Check for errors: Check the switch's event log for any errors or warnings. Address any issues that are found.
- Check for physical damage: Inspect the switch for any physical damage, such as bent or broken ports, or damage to the case. If any damage is found, contact HP for repair or replacement.
- Clean the switch: Use a soft, dry cloth to clean the switch and remove any dust or debris.
- Perform regular backups: Regularly back up the switch's configuration settings to ensure that they can be restored in case of failure.
- Monitor the switch's performance: Use network monitoring tools to monitor the switch's performance and identify any potential issues.
- Schedule regular maintenance: Schedule regular maintenance checks to ensure that the switch is running smoothly and to prevent any potential issues from arising.
General Information
- MPN : J4908A
- Brand Name: HP
- Type: Networking
- Networking-Type : Switching Module
- SKU : J4908A
Technical Information
- Application/Usage : Switching Network
Interfaces/Ports
- Interfaces/Ports Details : 20 x RJ-45 10/100/1000Base-T Auto-sensing/Auto-MDI/MDIX LAN
Media & Performance
- Media Type Supported : Twisted Pair
- Twisted Pair Cable Standard : Category 3
- Category 5
- Ethernet Technology : Ethernet
- Fast Ethernet
- Network Technology : 10Base-T
- 10/100Base-TX
I/O Expansions
- Number of Total Expansion Slots : 2
- Expansion Slot Type : SFP (mini-GBIC)
About Refurbished Products
Warranty
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.
Free Technical support on purchased items, our expert consultancy over the phone, by email, by live chat, or by remote login.
Delivery
Shipping Options and Estimated Delivery Time
UPS Shipping Options:
FREE UPS® Ground (Free shipping to all orders for 48 states!)
Estimated delivery time: 4-7 business days
UPS 3 Day Select®
Estimated delivery time: 3 business days
UPS 2nd Day Air®
Estimated delivery time: 1-2 business days, Delivery by 10:30 AM or 2:00 PM
UPS Next Day Air® Standard Overnight
Estimated delivery time: Overnight 2-5 PM, Standard Overnight Delivery.
UPS Next Day Air® - Priority Overnight
Estimated delivery time: Overnight Delivery (Next Business Day) Delivery by 10:30 AM or 12:00 PM
UPS Next Day Air® First Overnight - Early A.M
Estimated delivery time: Overnight 8:00 AM, Early morning, overnight delivery for your time-critical shipments.
UPS® First Overnight - Saturday
Estimated delivery time: Overnight 8:30 AM – Saturday
FedEx Shipping Options:
FedEx Ground®
Estimated delivery time: (4–7 business days in the contiguous 48 states)
*For residential delivery via FedEx Ground use FedEx Home Delivery®
Estimated delivery time: 4−7 business days, based on the distance to the destination.
FedEx Express Saver®
Estimated delivery time: 3 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states (except Hawaii and Alaska)
FedEx 2Day®
Estimated delivery time: 2 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states
FedEx Standard Overnight®
Estimated delivery time: Next-business-day (by 4:30 PM to U.S. businesses and by 8:00 PM to residences)
Available throughout all 50 states (Hawaii is outbound only)
FedEx Priority Overnight®
Estimated delivery time: Next-business-day (by 10:30 PM to U.S. businesses, noon to most residences)
Available throughout all 50 states
FedEx First Overnight®
Estimated delivery time: Next-business-day (by 8:30 or 9 AM to most areas)
Available throughout all 50 states
Worldwide Shipping Options:
UPS®/FedEx® International Economy
Estimated delivery time: 4-7 business days
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.
- We are not responsible for weather problems that may affect the delivery of goods by carriers. We cannot guarantee the exact delivery time, regardless of the carriers' claims.
- If you have any specific delivery time requirements, please contact our customer support and someone from our customer service team will be able to help you.
- You can estimate the shipping cost from the products detail page, also available on the checkout page
- The shipping cost depends on box dimensions, weight, and zip/postal code
- To get a FedEx® delivery service you need to mention it on the checkout page notebox.
- For urgent shipments, please contact our customer service.
- Shipping cut off 4:00 PM (Monday-Friday) and available blind drop shipment.
