Appendix B

Glossary

MAC (Media Access Control) Address - The unique address that a manufacturer assigns to each networking device..

Mask - A filter that includes or excludes certain values, for example parts of an IP address..

Mbps (MegaBits Per Second) - One million bits per second; a unit of measurement for data transmission..

MD5 (Message Digest 5) - An algorithm that produces a 128-bit hash.. MD5 is a variation of MD4, and increases MD4 security.. MD5 verifies the integrity of the communication and authenticates the origin of the communication..

MDI (Media Dependent Interface) A cable used for end stations.

MDIX (Media Dependent Interface with Crossover) - A

cable used for hubs and switches..

MIB (Management Information Base) - MIBs contain information describing specific aspects of network components..

Multicast - Transmits copies of a single packet to multiple ports..

Network - A series of computers or devices connected for the purpose of data sharing, storage, and/or transmission between users..

NMS (Network Management System) - An interface that provides a method of managing a system..

OID (Object Identifier) - Used by SNMP to identify managed objects.. In the SNMP Manager/Agent network management paradigm, each managed object must have an OID to identify it..

Packet - A unit of data sent over a network..

Ping (Packet INternet Groper) - An Internet utility used to determine whether a particular IP address is online..

Policing - Determines if traffic levels are within a specified profile.. Policing manages the maximum traffic rate used to send or receive packets on an interface..

Port - The connection point on a computer or networking device used for plugging in cables or adapters..

Port Mirroring - Monitors and mirrors network traffic by forwarding copies of incoming and outgoing packets from one port to a monitoring port..

Power over Ethernet (PoE) - A technology enabling an Ethernet network cable to deliver both data and power..

QoS (Quality of Service) -Provides policies that contain sets of filters (rules).. QoS allows network managers to decide how and what network traffic is forwarded according to priorities, application types, and source and destination addresses..

RADIUS (Remote Authentication Dial-In User Service)

-A protocol that uses an authentication server to control network access..

RJ-45 (Registered Jack-45) - An Ethernet connector that holds up to eight wires..

RMON (Remote Monitoring) - Provides network information to be collected from a single workstation..

Router - A networking device that connects multiple networks together..

RSTP (Rapid Spanning Tree Protocol) - Detects and uses network topologies that allow a faster convergence of the spanning tree, without creating forwarding loops..

Server - Any computer whose function in a network is to provide user access to files, printing, communications, and other services..

SMTP (Simple Mail Transfer Protocol) - The standard e-

mail protocol on the Internet..

SNMP (Simple Network Management Protocol) - A widely used network monitoring and control protocol..

SSH - Secure Shell.. A utility that uses strong authentication and secure communications to log in to another computer over a network..

SSL (Secure Socket Layer) - Encryption technology for the Internet used to provide secure transactions, such as the transmission of credit card numbers for e-commerce..

Static IP Address - A fixed address assigned to a computer or device that is connected to a network..

STP (SpanningTree Protocol) - Prevents loops in network traffic.. The Spanning Tree Protocol (STP) provides tree topography for any arrangement of bridges.. STP provides one path between end stations on a network, eliminating loops..

Subnet (Sub-network) - Subnets are portions of a network that share a common address component.. In TCP/IP networks, devices that share a prefix are part of the same subnet.. For example, all devices with a prefix of 157..100..100..100 are part of the same subnet..

Subnet Mask - An address code that determines the size of the network..

Switch - Filters and forwards packets between LAN segments.. Switches support any packet protocol type..

TACACS+ (Terminal Access Controller Access Control System Plus) - Proprietary Cisco enhancement to Terminal Access Controller Access Control System (TACACS).. Provides additional support for authentication, authorization, and accounting..

48-Port 10/100 + 4-Port Gigabit Switch with WebView and Power over Ethernet

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SRW248G4P specifications

Cisco Systems SRW248G4P is a high-performance Layer 2 switch designed specifically for small to medium-sized businesses that require robust networking solutions. This switch supports Power over Ethernet (PoE), providing a highly flexible option for powering devices such as IP phones, wireless access points, and surveillance cameras.

One of the standout features of the SRW248G4P is its 48 10/100 Ethernet ports, which ensure ample connectivity for various networked devices. Additionally, it offers four Gigabit Ethernet uplink ports, allowing for seamless integration with existing network infrastructure and facilitating high-speed data transfer. The combination of these ports enables businesses to expand their network capabilities as needed without the immediate requirement for added devices.

The SRW248G4P comes equipped with advanced Layer 2 switching capabilities, including VLAN support, which enables the segmentation of network traffic for improved performance and security. It also supports Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP), which help prevent network loops and ensure redundancy. With features like Link Aggregation Control Protocol (LACP), multiple physical connections can be combined into a single logical link, enhancing bandwidth and providing failover capabilities.

Another critical attribute of the Cisco SRW248G4P is its user-friendly management interface. The switch can be managed through a web-based interface, allowing IT administrators to configure settings, monitor performance, and troubleshoot issues with ease. Additionally, it supports SNMP (Simple Network Management Protocol) for integration with network management systems, further simplifying monitoring tasks.

Power over Ethernet functionality is a significant advantage of the SRW248G4P, providing up to 15.4 watts per port. This capability simplifies installation and reduces the clutter of power cords and outlets. Organizations can deploy PoE-enabled devices in locations that lack power sources, thus enhancing overall flexibility in network design.

In summary, the Cisco Systems SRW248G4P is a feature-rich switch tailored for small to medium-sized enterprises. Its blend of performance, management capabilities, and advanced features like PoE makes it a valuable asset in any organization's networking setup. By ensuring reliable connectivity and ease of management, businesses can focus more on growth and their core objectives rather than worrying about network complexities.
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