hdlc

, especially for ADSL. Introduction to PPP protocol----------------------------ppp:point-to-point Protocol, Link layer protocol. The user implements point-to-point communication. The PPP protocol provides a set of solutions to solve the problems of link establishment, maintenance, demolition, upper level protocol negotiation and authentication. Specifically contains the following parts: Link Control Protocol LCP (link controls Protocol), the Network Control Protocol NCP ("Protocol"), authenticat

these, as if learning a foreign language, you can and other computer terminals to do free communication.TCP/IP protocol tiering　The physical layer (RS-232, v.35) and the Data Link layer (HDLC, x.) involve the original bit stream transmitted on the communication channel, which realizes the mechanical, electrical, functional and process of transmitting the data, and provides the methods of error detection, correction, synchronization, etc. Make it appe

SDLC,HDLC,PPP,STP, Frame Relay: Physical Layer (physical) Eia/tia rs-232,v.35 ... As shown in the following examples:Functional details of the OSI layers: see blog http://blog.csdn.net/htyurencaotang/article/details/11473015(1) Physical layer:Provides the mechanical, electrical, functional, and procedural characteristics required to establish, maintain, and dismantle physical links, and provides information on the tra

HDLC for reliable transmission became the more popular Data Link layer protocol, but now HDLC is seldom used, for point-to-point links, A much simpler point-to-Point protocol PPP is the most widely used data Link layer protocol, and the PPP protocol is the data Link layer protocol used by the user's computer and ISP to communicate. (2) Broadcast channel, this channel uses a one-to-many broadcast communicat

Network technology after a period of time, has not been time to summarize, although the examination, the total feeling of understanding is still very vague, now carry on a bit of particlesReturn to the warehouse and review it in the summary.The usual commands are summarized as follows:1. Static routing ConfigurationRouter (config) # IP route 2. Default routing ConfigurationRouter (config) # IP route 0.0.0.0 0.0.0.0 3.POS Interface Related configurationRouter (config-if) # Interface pos3/0Router

+ cbst type.2. At + fclass selection mode. This command sets the module to a special mode for data or fax operations.3. At + Cr Service Report control. This command allows more detailed service reports.4. Results of at + CRC DivisionCode. This command allows more detailed ringtone instructions when the call arrives.5. At + ilrr local DTE-DCE rate report.6. At + crlp radio communication line protocol parameters.7. At + dopt other radio communication line parameters.8. Select at % C for data comp

/* Notional KISS type .*/# Define ARPHRD_ADAPT 0x264# Define ARPHRD_ROSE 0x270# Define ARPHRD_X25 0x271/* CCITT X.25 .*/# Define ARPHDR_HWX25 0x272/* Boards with X.25 in firmware .*/# Define ARPHRD_PPP 0x512# Define ARPHRD_CISCO 0x513/* Cisco HDLC .*/# Define ARPHRD_HDLC ARPHRD_CISCO# Define ARPHRD_LAPB 0x516/* LAPB .*/# Define ARPHRD_DDCMP 0x517/* Digitals DDCMP .*/# Define ARPHRD_RAWHDLC 0x518/* Raw HDLC

XIANSU1 4 Match Access-group 101//Set control list into strategy xiansu1 5) Policy-map Pozz create Policy-map name for Pozz 6) Class Xiansu1 7) Police 8000 exceed-action drop//Speed limit is 8000 kbit, 512KB 8)/Enter port 9) Service-policy Input Pozz Router requirements 1. Router Telnet A)//Enter the global configuration mode b c) Enable password 0 [password] d) Line vty 0 4 e) Password 0 [password] 2. Login Router Web A)//create user password first b Ip HTTP port 80//open web p

Huawei router is a brand that is very powerful and has a high market demand. It is very useful to know about the configurations of Huawei routers. So I have studied the configuration details of Huawei routers, I would like to share it with you here and hope it will be useful to you. En enters privileged ModeConf enters global configuration modeIn s0 Enter serial 0 port configurationIp add xxx. xxx add the ip address and mask, and assignEnca hdlc/ppp b

improves the forwarding performance, control capability, reliability, and security of devices.　 High-quality QoS capability　 High reliability　 Strong business capability: supports multiple VPNL2TP, GRE, mpls vpn, etc.), with a wide range of NAT functions, provides multiple interconnection functions, including Ethernet/VLAN, PPP/MP, PPPoE, Frame Relay, HDLC, ATM, X.25, HDLC, and LAPB, and suppor

-to-point links. The most common technology is IETF's Point-to-Point Protocol (PPP) encapsulation. IP over SDH is also called Packet over SDHPOS) technology. 5.1PPP PPP is a point-to-point link layer technology that provides the following functions: encapsulate and transmit different network layer protocol datagram on the same link layer, establish, configure, and test link layer connections, and establish and configure network layer protocols. PPP specifies the encapsulation mechanism and Link

The OptiView network super perspective solution integrates hardware and software to provide portable and distributed Analysis for enterprise-level networks. only OptiView integrates device search, traffic statistics, and protocol analysis to quickly, conveniently, and deeply analyze Wan, lan, and wireless networks. Quickly view your high-speed WAN links. The OptiView Wan analyzer provides a fast, convenient, and comprehensive performance analysis method for WAN links. You can remotely control it

-transmission is required. there is a problem: the two sides wait endlessly (the data frame or the confirmation frame is lost), the solution is to use the timeout timer after sending; the frame duplication phenomenon (the same two frames are received ), solution: number frames (2) Sliding Window traffic control refers to any time point Allows the sender/receiver to send/receive multiple frames at a time. The number of frames is called the size of the sending/Receiving Window, the size of the sen

processing board and network processing board provides 1 + 1) redundant Backup, with Fast route Backup FRB: Fast Routing Backup) features, implements hot status-based failover and uninterrupted multi-service router forwarding to provide high-quality service assurance. Powerful MPLS processing capabilities:Supports mpls vpn and mpls te, and provides high-quality, secure, and multi-layer mpls vpn solutions, which can be used as cost-effective mpls pe devices. Business capability:The software syst

Many users do not have a special understanding of the basic configurations of the vro. Here we mainly analyze the data transmission problems in the basic configurations of the vro. In today's era of rapid network development, routers play an important role. As a relay system in the network layer, a router provides the routing and forwarding functions for data between the layer-3 networks. Therefore, the functions, functions, and basic configurations of A vro must be mastered as members of the IT

design adopts the assembly language of the 68K series single-chip microcomputer, which is mainly divided into two parts: ROM program design and RAM program design. ROM Program It initializes the CPU, including establishing channels for external communication, including serial ports and HDLC channels), detecting peripheral devices, and loading RAM programs. ROM programs are divided into Boot and debugging programs, the boot program is located in flash

Compared with the LAN, that is, the WAN, We will summarize the WAN settings today, including the WAN protocol settings for routing and the WAN protocol for layer-3 switches. We hope that the content of this article will help you understand this aspect. Wan protocol routing configuration Procedure: Enter the global configuration status config term Enter port configuration Status interface serial slot/position Set the HDLC Frame Type encapsulation

Detailed explanation of H3C router configuration commandsDetailed explanation of H3C router configuration commandsEn enters privileged mode conf enters global configuration mode in s0 Enter serial 0 port configure ip add xxx. xxx. xxx. xxx. xxx. xxx. add the ip address and mask to xxx. China Telecom allocates the enca hdlc/ppp bundled link protocol hdlc or the ppp ip unn e0 exit and returns to the global co

manual mapping.For example, you can r2ping yourself 1.1.234.2 needint S2/2Frame-relay Map 1.1.234.2 2044, configure the link between R4 R5 to HDLC, and configure the appropriate interface addressThe default is HDLC. SShow int S2/15, configuring the R1--R5 loopback06, after the configuration is complete, test the link communicationOSPF Configuration1,r1 R2 R3, the network segment between R4 R5 uses the OSPF

radio communication line protocol parameters.At + dopt other radio communication line parameters.At % C data compression options.Whether at + DS allows v42 dual-degree data compression.Whether at + Dr reports v42 dual data compression.At/n data error correction options.IX. Fax commandAt + FTM transmission rate.At + frm receiving rateAt + FTH uses the HDLC protocol to set the transfer rate.At + FRH uses the HDLC