fddi

I. The component of FDDI Figure 1 As you can see from Figure 1, the components that make up FDDI should have at least the following parts: 1, fiber optic cable. 2, FDDI adapter. 3, FDDI adapter and fiber-connected connectors. However, in order to make the network have strong adaptability, and can be as backbone o

Optical Fiber Distributed Data Interface (FDDI) is one of the highest transmission rates in the current mature LAN technology. This transmission rate up to 100MB/S network technology is based on the standard is ansix3t9.5. The network has the characteristics of timing token protocol, supports a variety of topologies, and transmits media as optical fiber. Using fiber as a transport medium has several advantages: 1, a longer transmission distance, the

(Fddi:fiber distributed Data Interface) Optical Fiber Distributed Data Interface (FDDI) is a set of protocols that are developed by the United States National Standardization Organization (ANSI) to send digital signals on optical cables. FDDI uses a dual-loop token, with a transmission rate of up to 100Mbps. Because of its support for high-bandwidth and long-distance communication networks,

In FDDI reverse double loop or other structure, the data unit transmitted on the fiber is called the media access Control (MAC) frame. As shown in Figure 11. PA SD FC DA SA I FCS ED FS PA: Frame First sequence I: information SD: Frame First delimiter FCS: Frame test sequence FC: Frame Control (2 symbols) ED: Frame tail delimiter DA: Endpoint address FS: Frame state SA: Source Point Address (a) Frame format PA SD FC ED (b) Token format Frames

connected network system has the same Logical Link Control Procedure (llc), but the media access control protocol (mac) can be different. A bridge is a connection device on the data link layer. He accurately says it works on the mac sublayer. The bridge transmits information through indirect frames at the data link layer (ddl) of two local networks.The bridge is designed to store and forward data in various LAN networks. It is transparent to End Node users. When the end node transmits packets t

direction (DIR) The ID indicates a specific transmission direction. The possible direction is SRC , DST , SRC or DST . For example, 'src foo', 'dst net 128.3 ', 'src or DST port FTP-data '. If not specified, it is assumed that SRC or DST . If there is no link layer (for example, point-to-point protocols like slip), you can use inbound and outbound to specify a direction. protocol The qualifier limits the matchi

is SC Fiber Interface. 3. FDDI Interface FDDI is the highest transmission rate among mature LAN technologies. It has the characteristics of the timing token protocol and supports multiple topology structures. The transmission media is optical fiber. Optical Fiber Distributed Data Interface (FDDI) is a set of protocols developed by the American Organization for S

, different bandwidth requirements apply to different media, especially for 1000Base-TX Gigabit Ethernet connections, at least five cat-5e lines should be used, and six cat-5e lines should be used to ensure stability and high speed. 2. SC Optical Fiber Interface The SC optical fiber interface has been applied in the 100Base-TX Ethernet era. Therefore, 100Base-FXF is the abbreviation of the fiber word fiber, therefore, it is not widely used. Now the industry is vigorously promoting Gigabit Networ

copper column is SC Fiber Interface. 3. FDDI Interface FDDI is the highest transmission rate among mature LAN technologies. It has the characteristics of the timing token protocol and supports multiple topology structures. The transmission media is optical fiber. Optical Fiber Distributed Data Interface (FDDI) is a set of protocols developed by the American Org

bandwidth requirements apply to different media, especially for 1000Base-TX Gigabit Ethernet connections, at least five cat-5e lines should be used, and six cat-5e lines should be used to ensure stability and high speed. 2. SC Optical Fiber Interface The SC optical fiber interface has been applied in the 100Base-TX Ethernet era. Therefore, 100Base-FXF is the abbreviation of the fiber word fiber, therefore, it is not widely used. Now the industry is vigorously promoting Gigabit Networks, while S

flashlight) at one end of the optical fiber and check whether there is any flashing light at the other end of the optical fiber. The purpose of the connectivity test is to determine whether a breakpoint exists in the optical fiber. This method is used when purchasing optical cables. (2) end-end loss test. End-to-End loss test adopts the plug-in test method. Using a power measuring instrument and a light source, a certain position of the tested optical fiber is used as a reference point to test

the RJ-45 interface, and if it is a copper column, it is the SC fiber interface. 3. FDDI interface FDDI is the most mature LAN technology in the highest transmission rate, with the characteristics of the timing token protocol, supporting a variety of topologies, transmission media for optical fiber. Optical Fiber Distributed Data Interface (FDDI) is a set of p

modifier must match the specified protocol. available protocols include ether, FDDI, IP, ARP, RARP, decnet, Lat, SCA, moprc, mopdl, TCP, and UDP. for example, 'ethersrcfoo', 'arpnet128. 3', 'tcpport21 '. if no protocol modifier is specified, all protocol types are used. for example, 'srcfoo' refers to '(IP, ARP, or RARP) srcfoo' (note that the latter does not conform to the syntax), and 'netbar' refers to' (IP, ARP, or RARP) netbar ', 'port53' indica

performance vswitches and routers provide this interface, it looks very similar to the RJ-45 interface, but SC interface appears more flat, its obvious difference is inside the touch, if it is 8 Fine copper touch, it is RJ-45 interface, if it is a copper column is SC Fiber Interface. FDDI is the highest transmission rate among mature LAN technologies. It has the characteristics of the timing token protocol and supports multiple topology structures. T

identity (ID, name, or number), and one or more modifiers (qualifier) preceding the identity. There are three different types of modifiers:TypeType modifiers indicate what type of identity name or identity number represents. The types you can use are host,net and port. For example, ' Hostfoo ', ' net128.3 ', ' port20 '. If you do not specify a type modifier, the default host is used.DirThe orientation modifier indicates the transport direction relative to the identity (whether the data is incom

flat, its obvious difference is inside the touch, if it is 8 Fine copper touch, it is RJ-45 interface, if it is a copper column is SC Fiber Interface.　　3. FDDI InterfaceFDDI is the highest transmission rate among mature LAN technologies. It has the characteristics of the timing token protocol and supports multiple topology structures. The transmission media is optical fiber.The Optical Fiber Distributed Data Interface (

210.27.48.2, which indicates that 210.27.48.2 is a host, net 202.0.0.0 indicates that the 202.0.0.0 is a network address, port 23 indicates that the port number is 23. If no type is specified, the default type is host.The second is a keyword that determines the direction of transmission, mainly including src,dst,dst or SRC,DST and SRC, which indicate the direction of the transmission. For example, SRC 210.27.48.2, which indicates that the source address in the IP packet is 210.27.48.2, DST net

Switch type (rack style, fixed-profile with/without expansion slots The rack switch is a slot-type switch that is scalable and supports different network types, such as Ethernet, Fast Ethernet, Gigabit Ethernet, ATM, Token Ring, and FDDI, but the price is more expensive. A fixed-profile band-slot switch is a switch with a fixed number of ports and a small number of expansion slots, which, on the basis of support for fixed-port type networks, can suppo

Switch type (rack style, fixed-profile with/without expansion slots The rack switch is a slot-type switch that is scalable and supports different network types, such as Ethernet, Fast Ethernet, Gigabit Ethernet, ATM, Token Ring, and FDDI, but the price is more expensive. A fixed-profile band-slot switch is a switch with a fixed number of ports and a small number of expansion slots, which, on the basis of support for fixed-port type networks, can suppo

packets and number of nodes. TCP flag status. UDP source/destination information. ICMP type information. OSPF source/destination information. TCP and UDP Service value. Network Interface Message count. Network interface IP address checksum and error count. Network Interface Activity indicator. LAN statistics IPTraf can be used to monitor the load of an IP network. IPTraf uses the built-in raw packet capture interface of the Linux kernel and can be widely used in Ethernet cards. It supports