WS-C4948E-S Cisco Catalyst 48 Ports Manageable Switch Refurbished

The WS-C4948E-S Catalyst 4900 Series switch is a powerful networking device designed to meet the demands of modern enterprises. In this detailed exploration, we will delve into its key features, specifications, and capabilities. Whether you are an IT professional, network administrator, or someone curious about advanced networking equipment, this comprehensive guide aims to simplify the technical aspects of the WS-C4948E-S in Simple English.

The WS-C4948E-S is part of the Catalyst 4900 Series, renowned for its reliability and high performance. Let's break down its key features:

• 48 Ports 10/100/1000 (RJ45): The switch boasts 48 ports, providing connectivity for devices operating at 10/100/1000 Mbps speeds. These RJ45 ports are versatile, supporting various devices such as computers, printers, and other networking equipment.
• 4 Slot 10 Gigabit Ethernet: With four slots dedicated to 10 Gigabit Ethernet connections, the WS-C4948E-S ensures high-speed data transfer between compatible devices. These slots are crucial for handling data-intensive tasks and supporting bandwidth-hungry applications.
• Small Form-Factor Pluggable Plus (SFP+): The switch incorporates SFP+ technology, allowing for flexible and high-speed connectivity using small form-factor pluggable transceivers. SFP+ modules enhance the switch's adaptability to different networking environments.
• IP Base: The IP Base feature signifies the switch's support for IP routing in a Layer 3 environment. This capability is essential for efficient data routing and network segmentation, enabling the creation of distinct subnetworks.
• Layer 2 Ethernet: The WS-C4948E-S operates at Layer 2 of the OSI model, focusing on data link layer functionalities. This includes Ethernet switching, VLAN support, and MAC address learning, contributing to a robust and efficient network infrastructure.
• Managed Switch: As a managed switch, the WS-C4948E-S provides administrators with control over network configurations. This enables the implementation of security measures, Quality of Service (QoS) settings, and monitoring features to optimize network performance.

• Port Configurations and Versatility: The 48 RJ45 ports offer flexibility in connecting a variety of devices with different speed requirements. From legacy devices operating at lower speeds to modern high-speed equipment, the switch accommodates diverse connectivity needs.
• 10 Gigabit Ethernet Slots for High-Speed Connectivity: The four dedicated slots for 10 Gigabit Ethernet connections are crucial for organizations dealing with data-intensive applications such as video streaming, large file transfers, and virtualization. These slots provide the necessary bandwidth to meet the demands of contemporary networking.
• SFP+ Technology for Enhanced Flexibility: The inclusion of SFP+ technology ensures adaptability to different networking environments. SFP+ modules can be easily swapped to support various connection types, including fiber-optic connections for longer distances.
• IP Base for Layer 3 Routing: The IP Base feature empowers the WS-C4948E-S to perform Layer 3 routing functions. This is particularly valuable for organizations requiring inter-VLAN routing and efficient management of IP addresses within their network.
• Layer 2 Ethernet Operations: Operating at Layer 2 of the OSI model, the switch excels in Ethernet switching. It efficiently forwards frames based on MAC addresses, supporting VLANs for network segmentation. This layer is fundamental for building a stable and scalable network foundation.
• Managed Switch Capabilities: The managed switch capabilities of the WS-C4948E-S provide administrators with granular control over network configurations. This includes the ability to set up Virtual LANs (VLANs), manage spanning tree protocols for network redundancy, and implement security measures such as port security and access control lists.

• Enterprise Networking: The WS-C4948E-S is well-suited for enterprise-level networking, where a large number of devices need to be connected securely and efficiently. The abundance of ports, high-speed slots, and Layer 3 routing capabilities make it an ideal choice for handling diverse networking needs.
• Data Centers: In data center environments, where high-performance networking is paramount, the WS-C4948E-S shines. Its 10 Gigabit Ethernet slots are instrumental in supporting the rapid transfer of large volumes of data, crucial for data-intensive applications and virtualization.
• Network Segmentation and Security: The Layer 2 Ethernet operations and managed switch capabilities make the WS-C4948E-S suitable for implementing robust network segmentation and security measures. This is essential for protecting sensitive data and ensuring that each segment operates independently.
• High-Bandwidth Applications: Organizations dealing with high-bandwidth applications, such as video conferencing, multimedia streaming, and large file transfers, can leverage the WS-C4948E-S to ensure a smooth and uninterrupted user experience.

The Cisco Catalyst 4948E is a high-performance Ethernet switch that is designed for top-of-rack (ToR) data center deployments. It provides low-latency switching and routing capabilities for data center networks.

The switch has a forwarding rate of up to 128 Gbps, which means that it can handle a large amount of network traffic without experiencing any significant delays. The switch also supports jumbo frames, which allows it to handle larger packets of up to 9216 bytes, further increasing its performance.

The 4948E is also equipped with 48 Gigabit Ethernet ports, which provide high-speed connectivity to servers and other network devices. Additionally, it also has four 10 Gigabit Ethernet uplink ports, which can be used for connecting to other switches or to servers, providing even higher throughput and bandwidth.

In terms of Quality of Service (QoS), the 4948E supports advanced QoS features such as traffic shaping, bandwidth limiting, and congestion management. This allows the switch to prioritize different types of traffic, such as voice or video, to ensure that they are delivered with minimal delay and jitter.

The 4948E also supports advanced security features such as Cisco TrustSec, which provides identity-based security for the network. This allows the switch to identify and secure devices and users on the network, helping to prevent unauthorized access and data breaches.

Compliant Standards

The WS-C4948E-S Cisco Catalyst 4948E 48-Ports Ethernet Switch is compliant with some industry standards that ensure its compatibility and interoperability with other networking equipment. Some of the key compliant standards include:

• IEEE 802.3: This standard defines the basic specifications for Ethernet networks, including the physical layer and data link layer. The switch is compliant with the IEEE 802.3 standard for 10BASE-T, 100BASE-TX, and 1000BASE-T Ethernet networks.
• IEEE 802.3ab: This standard defines the specifications for 1000BASE-T Ethernet networks, which provides for Gigabit Ethernet over twisted-pair copper cabling.
• IEEE 802.3u: This standard defines the specifications for 100BASE-TX and 100BASE-T4 Fast Ethernet networks.
• IEEE 802.3z: This standard defines the specifications for 1000BASE-X Gigabit Ethernet networks, which provide for Gigabit Ethernet over fiber-optic cabling.
• IEEE 802.3x: This standard defines the specifications for full-duplex and flow control in Ethernet networks.
• IEEE 802.1D: This standard defines the specifications for the Spanning Tree Protocol (STP), which is used to prevent loops in Ethernet networks.
• IEEE 802.1Q: This standard defines the specifications for Virtual LANs (VLANs), which allow for the creation of multiple virtual LANs within a single physical network.
• IEEE 802.1p: This standard defines the specifications for Quality of Service (QoS) in Ethernet networks, which allows for the prioritization of different types of network traffic.
• IEEE 802.3ad: This standard defines the specifications for Link Aggregation Control Protocol (LACP) which allows for the bundling of multiple physical links into a single logical link, providing increased bandwidth and redundancy.

• Manufacturer: Cisco
• Part Number: WS-C4948E-S
• Product Line: Catalyst
• Product Series: 4900
• Product Model: 4948E
• Product Name: Catalyst 4948E Ethernet Switch
• Product Type: Ethernet Switch

• Total Number of Network Ports: 48
• Number of Network (RJ-45) Ports: 48
• Port/Expansion Slot Details: 48 x Gigabit Ethernet Network
• Port/Expansion Slot Details: 4 x 10 Gigabit Ethernet Expansion Slot

• Ethernet Technology: 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: 2

• Manageable: Yes
• Management:
• Cisco Works LAN Management Solution (LMS)
• Cisco Works CiscoView
• Cisco Network Assistant
• IEEE 802.1Q VLAN
• IEEE 802. 1p QoS
• SNMP v1, v2, v3
• RMON
• DHCP
• CLI
• HTTPS
• Telnet

Memory

• Standard Memory: 1 GB

Power Description

• Input Voltage: 110 V AC
• Input Voltage: 220 V AC
• Power Source: Power Supply
• Redundant Power Supply: Yes

In general, the WS-C4948E-S Catalyst 4900 Series switch is a versatile and powerful networking device suitable for a range of applications, from enterprise networking to data center environments. Its combination of 48 RJ45 ports, 4 10 Gigabit Ethernet slots, SFP+ technology, IP Base for Layer 3 routing, Layer 2 Ethernet operations, and managed switch capabilities make it a valuable asset for organizations seeking high-performance and configurable networking solutions.

Understanding the features, applications, and installation/configuration aspects of the WS-C4948E-S empowers IT professionals and network administrators to make informed decisions regarding its integration into their infrastructure. As networking technology continues to evolve, the WS-C4948E-S stands as a reliable and adaptable solution to meet the challenges of modern connectivity demands.