Appendix C

Appendix C:

Glossary

This glossary contains some basic networking terms you may come across when using this product.

WEB: For additional terms, please visit the glossary at www.linksys.com/glossary

Access Mode  Specifies the method by which user access is granted to the system.

Access Point  A device that allows wireless-equipped computers and other devices to communicate with a wired network. Also used to expand the range of a wireless network.

Access Profiles  Allows network managers to define profiles and rules for accessing the device. Access to management functions can be limited to user groups, which are defined by the following criteria:

Ingress interfaces

Source IP address and/or Source IP subnets.

ACE  Filters in Access Control Lists (ACL) that determine which network traffic is forwarded. An ACE is based on the following criteria:

Protocol

Protocol ID

Source Port

Destination Port

Wildcard Mask

Source IP Address

Destination IP Address

ACL (Access Control List)  Access Control Lists are used to grant, deny, or limit access devices, features, or applications.

Auto-negotiation Allows 10/100 Mbps or 10/100/1000 Mbps Ethernet ports to automatically establish the optimal duplex mode, flow control, and speed.

Back Pressure  A mechanism used with Half Duplex mode that enables a port not to receive a message.

Bandwidth  The transmission capacity of a given device or network.

Bandwidth Assignments  Indicates the amount of bandwidth assigned to a specific application, user, and/or interface.

Glossary

Baud  Indicates the number of signaling elements transmitted each second.

Best Effort  Indicates that traffic is assigned to the lowest priority queue, and packet delivery is not guaranteed.

Bit  A binary digit.

Boot  To start a device and cause it to start executing instructions.

Browser  An application program that provides a way to look at and interact with all the information on the World Wide Web.

Bridge  A device that connect two networks. Bridges are hardware specific, however they are protocol independent. Bridges operate at Layer 1 and Layer 2 levels.

Broadcast Domain  Devices sets that receive broadcast frames originating from any device within a designated set. Routers bind Broadcast domains, because routers do not forward broadcast frames.

Broadcast Storm  An excessive amount of broadcast messages simultaneously transmitted across a network by a single port. Forwarded message responses are heaped onto the network, overloading network resources or causing the network to time out.

Burst  A packet transmission at faster than normal rates. Bursts are limited in time and only occur under specific conditions.

Burst Size  Indicates the burst size transmitted at a faster than normal rate.

Byte  A unit of data that is usually eight bits long

Cable Modem  A device that connects a computer to the cable television network, which in turn connects to the Internet.

CBS (Committed Burst Size)  Indicates the maximum number of data bits transmitted within a specific time interval.

CIR (Committed Information Rate)  The data rate is averaged over a minimum time increment.

Class Maps  An aspect of Quality of Service system that is comprised of an IP ACL and/or a MAC ACL. Class maps are configured to match packet criteria, and are matched to packets in a first-fit fashion.

Combo Ports  A single logical port with two physical connections, including an RJ-45 connection and a SFP connection.

Communities  Specifies a group of users which retain the same system access rights.

24/48-Port 10/100 + 4-Port Gigabit Resilient Clustering Smart Switch with 2 Combo SFPs

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Linksys SLM224G4S manual Appendix C Glossary

SLM224G4S specifications

The Linksys SLM224G4S is a sophisticated Layer 2 managed switch designed for businesses and institutions that demand high performance, reliability, and advanced networking features. This model stands out due to its blend of robustness and manageability, making it ideal for expanding networks.

One of the primary features of the SLM224G4S is its 24 Gigabit Ethernet ports, allowing for high-speed data transfers essential for bandwidth-intensive applications. Supporting auto-negotiation, these ports can detect the capabilities of connected devices and configure themselves accordingly, ensuring optimal performance without manual intervention. With four additional shared Gigabit SFP (Small Form-factor Pluggable) ports, this switch provides flexibility in network design and enhances scalability.

The SLM224G4S supports VLAN (Virtual Local Area Network) capabilities, which can segment network traffic to improve security and performance. This is particularly useful in environments where different departments or teams require distinct network segments for operational efficiency. By implementing VLANs, organizations can enhance their network management while isolating sensitive information from potential threats.

Quality of Service (QoS) is another critical technology integrated into the SLM224G4S. It prioritizes network traffic, ensuring that critical applications receive the bandwidth they need for optimal performance. This is particularly important for VoIP and video conferencing applications, where latency and jitter can significantly impact user experience.

The switch also features advanced Layer 2 management functionalities, including SNMP (Simple Network Management Protocol), allowing IT administrators to monitor network performance and quickly troubleshoot issues. The embedded web-based management interface makes configuration straightforward, enabling quick adjustments to settings without deep networking knowledge.

Security is a paramount consideration in today’s networking landscape. The SLM224G4S provides robust security features, including port security that limits the number of MAC addresses allowed on a port, reducing the risk of unauthorized access. Moreover, it supports802.1X port-based authentication, ensuring that only authenticated devices can connect to the network.

In summary, the Linksys SLM224G4S managed switch boasts features such as 24 Gigabit Ethernet ports, VLAN support, QoS, SNMP management, and advanced security protocols. These characteristics make it an excellent choice for businesses looking to enhance their network's performance, safety, and reliability, paving the way for seamless connectivity in today’s digital age.