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Enterasys Networks 700 manual Ethernet Frames

Models: 700

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FDDI Management

If the frame is exiting the FDDI ring through another FDDI/Ethernet bridge, the FDDI frame must be converted back into an IEEE 802.3/Ethernet frame. As there are four potential Ethernet frame types to which the two FDDI frame types can be translated, you must determine which translation options you want in effect — depending on which network protocols and applications are being run on the destination network.

In addition, there are frame size differences between FDDI (which allows a maximum frame size of 4500 bytes) and Ethernet frames (1518 byte maximum, excluding preamble), so FDDI frames may need to be fragmented before being bridged onto an Ethernet network.

The Frame Translation window lets you set the parameters for frame translation and fragmentation when Ethernet traffic needs to traverse an FDDI ring. The frame types that you select for translation will depend on which higher-layer communications protocols and software you are running on the network segments connected to your Ethernet-to-FDDI bridge. Each frame type and its usage is described below.

Ethernet Frames

The DELHF-UA supports translation of the following four Ethernet frame types:

Ethernet II

Ethernet II is the Novell NetWare designation for the basic Ethernet frame type (also commonly referred to as Ethernet or Ethernet DIX). This frame format has an Ethernet II MAC header with a two byte Ethernet Type field. The Type field contains a protocol ID which indicates the upper layer protocol (e.g., XNS, DECnet, TCP/IP, etc.) used in the Data field of the packet. Most current transmission protocols, including TCP/IP, use the Ethernet II frame format, as do networks running Apple’s AppleTalk 1 protocol and Digital’s DECnet™ protocol.

Note that the Type field of an Ethernet II frame will always have a decimal value greater than 1500, so that it can be differentiated from the Length field of Ethernet 802.2 frames (described below).

Ethernet 802.2

The Ethernet 802.2 frame format is the IEEE 802.3 formalization of the original Ethernet frame format. This frame format is similar to the Ethernet II frame format, except that the two byte Type field is eliminated and replaced with a two byte Length field, and an 802.2 LLC header is encapsulated within the 802.3 frame. This LLC header contains the destination and source addressing information for the LLC frame (DSAP and SSAP), and a one byte Control field (the LSAP – or LLC Service Access Point value) which provides the frame’s protocol ID. Ethernet 802.2 packets are differentiated from Ethernet II packets because the Length field will always have a decimal value of 1500 or less (since the data field in Ethernet frames cannot be greater than 1500 bytes), and the Ethernet II Type field will always be greater than 1500 decimal.

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Configuring FDDI Frame Translation Settings

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Enterasys Networks 700 manual Ethernet Frames
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700 specifications

Enterasys Networks, a key player in the networking and security industry, offers an extensive range of solutions, among which is the Enterasys Networks 700 series. The Enterasys 700 series is designed to meet the demands of modern networking environments while providing a robust set of features, high performance, and scalability that appeals to organizations of various sizes.

One of the main features of the Enterasys 700 series is its ability to deliver high-speed connectivity, which supports multiple Gigabit Ethernet ports. This ensures that organizations can efficiently handle bandwidth-intensive applications and a growing number of connected devices. The series is designed to facilitate seamless and reliable data transmission, making it suitable for environments that require consistent uptime and performance.

The Enterasys 700 series is built around advanced security protocols that are essential for protecting organizational data. These security features include integrated firewalls, intrusion detection systems, and comprehensive access control policies. This ensures that sensitive information remains secure from internal and external threats while providing IT administrators with the tools needed to manage security policies effectively.

Another notable characteristic of the Enterasys 700 series is its intelligent networking capabilities. The integration of advanced Quality of Service (QoS) mechanisms allows network administrators to prioritize critical applications, ensuring optimal performance for mission-critical services. This capability is especially important in environments that host multiple applications, as it empowers organizations to manage bandwidth efficiently and maintain service quality.

The Enterasys 700 series also incorporates advanced network management solutions, enabling centralized control and monitoring. This feature simplifies the administration of network resources, allowing IT teams to quickly diagnose issues and deploy solutions as needed. The user-friendly interface and comprehensive reporting tools further enhance the management experience, providing insights into network performance and health.

Furthermore, the Enterasys Networks 700 series is designed with scalability in mind. Organizations can easily expand their network infrastructure without the need for significant overhauls, accommodating future growth and technological advancements. This flexibility not only saves costs but also ensures that organizations remain competitive in an ever-evolving digital landscape.

In summary, the Enterasys Networks 700 series offers a rich suite of features and technologies that cater to modern networking needs. Its high-speed connectivity, robust security measures, intelligent networking capabilities, comprehensive management tools, and scalability make it an excellent choice for organizations looking to enhance their network infrastructure. Whether for small businesses or large enterprises, the Enterasys 700 series stands out as a reliable and versatile networking solution.