Cisco WS-C4948E 48 Ports Managed Switch Gigabit Ethernet Refurbished

The WS-C4948E Catalyst 4948 is a high-performance Ethernet switch designed to meet the demands of modern network environments. With supporting 10/100/1000Base-T RJ-45 connections 48 ports and additional features like manageability, Layer 3 capabilities, and SFP/SFP+ ports, this rack-mountable switch is a versatile solution for various networking needs. In this description, we'll delve into the key features and benefits of the WS-C4948E, exploring its capabilities and how it can enhance your network infrastructure.

Ports on a network switch are like the sockets in your house where you plug in electrical devices. Each port on the WS-C4948E is where you can connect a device to the network. With 48 ports, you can connect a lot of devices to the network at the same time.

The WS-C4948E supports different types of connections, including 10/100/1000Base-T RJ-45. This refers to the speed and type of connection supported by the ports. For example:

• 10Base-T: This supports speeds up to 10 megabits per second (Mbps).
• 100Base-T: This supports speeds up to 100 Mbps.
• 1000Base-T: This supports speeds up to 1 gigabit per second (Gbps).
• RJ-45: This is a type of connector commonly used for Ethernet connections. It looks like a larger version of a telephone plug.

The WS-C4948E is a manageable switch, which means it can be configured and controlled to manage the traffic on the network. This allows network administrators to set up rules, monitor performance, and troubleshoot issues more effectively.

Gigabit Ethernet refers to the speed of the connections supported by the switch. With gigabit Ethernet, data can be transferred at speeds up to 1 gigabit per second (Gbps). This is much faster than older standards like Fast Ethernet (100 Mbps) or Ethernet (10 Mbps). Gigabit Ethernet is commonly used in modern networks to support high-speed data transfer between devices.

In networking, devices communicate using a set of rules known as protocols. These protocols are organized into different layers, each responsible for a specific aspect of communication. Layer 3, also known as the network layer, is responsible for routing data packets between different networks.

The WS-C4948E is a Layer 3 switch, which means it has the capability to route data at the network layer. This allows it to make decisions about where data packets should be sent based on their destination IP addresses. Layer 3 switches are commonly used in larger networks where routing between different subnets or VLANs is necessary.

Rack-mountable refers to the design of the switch, which allows it to be installed in a standard equipment rack. These racks are commonly used in data centers and server rooms to organize and store networking equipment.

• Space-saving: By mounting multiple devices in a rack, valuable floor space can be saved.
• Organization: Racks provide a neat and organized way to store networking equipment, making it easier to manage and maintain.
• Airflow: Racks are designed to facilitate airflow, helping to keep networking equipment cool and prevent overheating.

SFP stands for Small Form-factor Pluggable, and SFP+ is an enhanced version of SFP. These ports allow for the connection of fiber optic cables to the switch, enabling long-distance and high-speed data transfer.

• Flexibility: SFP and SFP+ ports allow for the use of different types of fiber optic cables, providing flexibility in network design.
• High Speeds: SFP+ ports support higher speeds than traditional copper Ethernet connections, making them ideal for high-bandwidth applications.
• Long Distance: Fiber optic cables can transmit data over much longer distances than copper cables, making SFP and SFP+ ports suitable for connecting devices in different parts of a building or campus.

Scalability

As organizations grow, so do their networking needs. The WS-C4948E offers scalability to accommodate the increasing demands of expanding networks. With its modular design and support for additional hardware modules, such as power supplies and cooling fans, the switch can adapt to changing requirements, making it a future-proof investment for businesses experiencing growth.

Redundancy and Reliability

Ensuring network uptime is critical for any organization, and the WS-C4948E addresses this need through its built-in redundancy and reliability features. The switch supports features such as link aggregation (LACP) and hot-swappable power supplies, minimizing the risk of network downtime. Redundancy is a key consideration for mission-critical applications, and the WS-C4948E provides the reliability necessary for uninterrupted network operation.

Security Features

Network security is a top priority in today's interconnected world, and the WS-C4948E includes a range of security features to safeguard against unauthorized access and potential threats. The switch supports features like Access Control Lists (ACLs), MAC address filtering, and port security, providing administrators with tools to control and monitor network access effectively.

Energy Efficiency

In line with environmental considerations and cost savings, the WS-C4948E incorporates energy-efficient features. The switch includes mechanisms for power management, such as Energy-Efficient Ethernet (EEE) and variable speed fans, contributing to reduced power consumption and lower operational costs over time.

• Manufacturer: Cisco
• Part Number or SKU# WS-C4948E
• Brand Name: Cisco
• Product Line: Catalyst
• Product Series: 4900
• Product Model: 4948E
• Product Name: Catalyst 4948E Layer 3 Switch
• Product Type: Layer 3 Switch

• Total Number of Network Ports: 48
• Token Ring Port: None
• LRE Port: None
• Number of Network (RJ-45) Ports: 48
• Port/Expansion Slot Details:
  • 48 x Gigabit Ethernet Network
  • 4 x 10 Gigabit Ethernet Expansion Slot

• Media Type Supported: Twisted Pair
• Ethernet Technology:
  • Fast Ethernet
  • Gigabit Ethernet
• Network Technology: 10/100/1000Base-T

• Number of Total Expansion Slots: 4
• Expansion Slot Type: SFP+
• Number of SFP+ Slots: 4

• Layer Supported: 3

• Standard Memory: 1 GB
• Memory Technology: SDRAM

Power Description

• PoE (RJ-45) Port: None
• Input Voltage:
  • 110 V AC
  • 220 V AC
• Power Source: Power Supply
• Redundant Power Supply: Yes

In short, the WS-C4948E Catalyst 4948 is a powerful and versatile network switch suitable for a wide range of applications. With its 48 ports, manageable configuration, gigabit Ethernet support, Layer 3 functionality, rack-mountable design, and SFP/SFP+ ports, it provides the features and flexibility needed to build and maintain modern networks. Whether in a small office or a large enterprise environment, the WS-C4948E offers reliability, performance, and scalability for all networking needs.