16710.bk : IPADDRES.FRM Page 4 Tuesday, October 7, 1997 11:38 AM

B-4 APPENDIX B: IP AND IPX ADDRESSES

Class A. The highest order bit is set to 0, giving a seven-bit network number and a 24-bit device address. You can have 125 networks with 16,777,214 devices per network, and the addresses are in the range 001.xxx.xxx.xxx to 126.xxx.xxx.xxx (where xxx represents the device portion).

Class B. The two highest order bits are set to 10, giving a 14-bit network number and a 16-bit device address. You can have 16382 networks with 65,534 devices per network, and the addresses are in the range 128.001.xxx.xxx to 191.254.xxx.xxx (where xxx represents the device portion).

Class C. The three highest order bits are set to 110, giving a 21-bit network number and a 8-bit device address. You can have 2,097,152 networks with 254 devices per network, and the addresses are in the range 192.000.001.xxx to 223.255.254.xxx (where xxx represents the device portion).

Class D. This is used as a multicast address. The four highest order bits are set to 1110. Multicasting is used to send an IP datagram to all members of a host group. A host group is composed of a set of devices identified by a single IP address. The addresses are in the range 224.000.000.000 to 239.255.255.255.

Subnets

You can further divide your IP network into sub networks. Support for sub networks is important because the number of bits assigned to the device portion of an IP address limits the number of devices that may be addressed on any given network. For example, a Class C address is restricted to 254 devices.

If you have a small network (less than 254 devices) then you may decide not to have sub networks.

A subnet mask is used to divide the device portion of the IP address into two parts:

■The first part identifies subnet number.

■The second part identifies the device on that subnet.

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3C16710 specifications

The 3Com 3C16710 is a high-performance networking device that stands out in the realm of network communication solutions, delivering reliability and efficiency for a variety of network environments. Positioned as a part of 3Com's robust product line, the 3C16710 is designed to facilitate seamless connectivity, catering to the needs of small to medium-sized enterprises.

One of the standout features of the 3C16710 is its advanced Layer 2 switching capabilities. Built to support multiple Ethernet standards, this switch is equipped with 10/100BASE-TX ports, allowing for flexible integration into existing network infrastructures. With a switching capacity that ensures minimal latency, the 3C16710 is capable of handling substantial data traffic, making it an ideal choice for organizations that demand high-speed connectivity.

The device supports advanced features such as VLAN (Virtual Local Area Network) tagging, which effectively enhances network efficiency by segmenting network traffic. This capability helps to optimize bandwidth usage and improve security by isolating sensitive data traffic. Moreover, it supports spanning tree protocol to prevent loops, facilitating a stable and trouble-free network experience.

In terms of management, the 3C16710 provides various options for configuration and monitoring. It supports both SNMP (Simple Network Management Protocol) for network management as well as a web-based interface for intuitive access, allowing network administrators to easily manage settings and monitor performance. The switch can be configured to deliver quality of service (QoS), ensuring that critical applications receive the bandwidth they require, thereby improving overall network performance.

Another noteworthy characteristic is its robust build quality, which enhances reliability in challenging environments. The 3C16710 is also designed for energy efficiency, complying with green networking standards to minimize power consumption without sacrificing performance.

In summary, the 3Com 3C16710 is a versatile networking switch that combines advanced Layer 2 switching capabilities, VLAN support, and flexible management options. With its reliable performance and energy-efficient design, it meets the demands of modern network architectures, making it a valuable asset for organizations looking to enhance their network infrastructure.
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