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3Com 5210 manual Appendix Glossary

Models: 5210

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CSMA Carrier Sense Multiple Access—Media-access mechanism wherein devices ready to transmit data first check the channel for a carrier. If no carrier is sensed for a specific period of time, a device can transmit. If two devices transmit at once, a collision occurs and is detected by all colliding devices. This collision subsequently delays retransmissions from those devices for some random length of time.

CTS Clear to Send—Hardware signal defined by the RS-232 specification that indicates that a transmission can proceed.

CLASS Custom Local Area Signaling Services—CLASS is a service mark of Bellcore. It is the

signaling service available such as caller-id, call waiting, and auto-redial.

DCD Data Carrier Detected—Hardware signal defined by the RS-232-C specification that indicates that a device such as a modem is online and ready for transmission.

DCE Data Communication Equipment—A communications device that can establish, maintain, and terminate a connection (for example, a modem). A DCE may also provide signal conversion between the data terminal equipment (DTE) and the common carrier's channel.

DCF Disengage Confirm—This is a call flow message.

DHCP Dynamic Host Configuration Protocol—A protocol that allows network administrators to centrally manage and automate the assignment of Internet Protocol (IP) addresses in their organization's network.

DHTML Dynamic Hypertext Markup Languages—A name for a set of programs that developers can use to create Web pages that update themselves on the fly. Dynamic HTML makes your Web documents more interactive than HTML.

DIMM Dual Inline Memory Module—Has a 10% higher capacity bandwidth than Single In-line memory module (SIMM). The DIMM’s data path is 128 bits wide.

DIN Deutsche Institute fur Normung (German Institute for Standardization)—DIN specifications are issued under the control of the German government. The most common specification is the dimensions of cable connectors referred to as DIN connectors.

DINS Dialed Number Identification Service

DIP Dual Inline Package—These are small on and off switches on the circuit board used to configure the board in a semipermanent way. The DIP switches are the first thing to look at when a configuration isn’t what you intended after an installation.

DMS Digital Multiplex System—A digital switch that is used in a central office. It contains multiple devices to handle the many needs of the system. Such as, local/toll exchange, long distance switch, international gateway, local and long distance switch, wireless, and advanced signaling solutions.

DNS Domain Name Server—System used in the internet for translating names of network nodes into addresses.

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3Com 5210 manual Appendix Glossary
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5210 specifications

The 3Com 5210 is a robust and reliable networking switch designed to meet the demands of modern IT environments. Aimed at businesses looking for a balance of performance and manageable costs, the 5210 series provides essential features that cater to the needs of various industries.

One of the standout features of the 3Com 5210 is its support for high-performance switching. With a switching capacity of up to 104 Gbps, the device is built to handle a significant amount of data traffic, making it suitable for environments with heavy workloads. Coupled with a forwarding rate of 77.4 million packets per second, the 5210 guarantees minimal latency, ensuring that data is transmitted swiftly and efficiently across the network.

The 5210 switch supports Layer 2 and Layer 3 switching, allowing for flexibility in network design and operational efficiency. The Layer 3 functionality enables IP routing, facilitating better traffic management and segmentation across IP networks. This is particularly useful for organizations looking to optimize their network performance and ensure efficient load distribution.

In terms of security, the 3Com 5210 incorporates advanced features designed to protect enterprise networks from potential threats. The switch supports VLANs, which help in segmenting network traffic, along with port security features to minimize unauthorized access. Moreover, it provides access control lists (ACLs) that allow administrators to define rules for data transmission, enhancing overall security.

The device is also equipped with Quality of Service (QoS) capabilities, which prioritize different types of traffic to ensure that critical applications receive the bandwidth they require. This is crucial for businesses that rely on voice over IP or video conferencing, as it ensures clear and uninterrupted communication.

Management and monitoring are simplified via a user-friendly web interface, allowing network administrators to configure settings, monitor traffic, and troubleshoot issues easily. The switch supports Simple Network Management Protocol (SNMP), enabling remote management and ensuring that IT teams can respond to problems without being physically present at the location.

The 3Com 5210 is characterized by its reliability and durability. Built with robust hardware components, the switch is designed for continuous operation, suitable for both small offices and larger enterprise networks. With its combination of performance, security, and manageability, the 3Com 5210 stands out as a valuable asset for organizations aiming to enhance their networking capabilities.