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Summary of Cisco router VPN

encapsulated at Layer 3rd of the network protocol stack. The following tunnel protocols are available:IPSecIP Security) Protocol: the IPSec protocol is not a separate protocol. It provides a complete set of architecture for data Security on the IP network, including AHAuthentication Header), ESPEncapsulating Security Payload) IKEInternet Key Exchange. To ensure the integrity, authenticity, anti-replay and private nature of data packets during network upload and transmission.GREGeneric Routing E

Internet routing-host route table and forwarding table

another, while the route table describes the network information and directs the data packet from one machine to another. 4. misunderstandings At present, many people understand the implementation of a system. These people are similar to three categories. The first type is proficient in Linux kernel, the second type is proficient in the configuration of Cisco devices, and the third type is proficient in Windows Network Programming and NDIS. The three types have very few common intersections, so

Key to the seamless integration of GMPLS--IP and WDM)

different methods, namely, IP packets, ATM cells, SDH frames, and WDM wavelengths. In actual use, there is no need for so many bandwidth particles. In terms of functions, each layer has functions of adjacent layers, especially the protection and recovery functions. Each layer has functions that make it very complex and even conflict with each other. In short, the existing layer-4 network structure cannot meet the needs of data business development, and new technical means must be developed.Figu

Creating an IPv6 network environment cannot be achieved overnight

practical application of the research direction, more and more organizations and groups are paying attention to this issue. The evolution from IPv4 to IPv6 is a long-term complex process, so it is impossible to achieve it overnight in the short term, at present, there are two main types of solutions: Pure IP network evolution solution and MPLS network evolution solution. Pure IP network solution refers to the basic process of using IP networks as the

Multiple solutions create a new generation IPv6 Network Environment

. The evolution from IPv4 to IPv6 is a long-term complex process, so it is impossible to achieve it overnight in the short term, at present, there are two main types of solutions: Pure IP network evolution solution and MPLS network evolution solution. Pure IP network solution refers to the basic process of using IP networks as the bearer upper-layer services at the backbone, Metro, and access layers. means; MPLS

NAT technology Overview

Gateway) mechanism to support some special application protocols, without any modification to the NAT platform, it has good scalability. The packets of these special protocols carry the address or port information, which may also need to be converted. Supported special protocols include: FTP (file transfer protocol, file transfer protocol), PPTP (Point-to-Point Tunneling Protocol, point-to-point tunnel protocol), ICMP (Internet Control Message Protocol, internet Control Message Protocol), DNS (

Boy surface in mathematical graphics

This was discovered by a boy surnamed.Boy surface.This image is similar to a Rome image and is a three-point image. It can be said that it is made of a Rome surface change. This article will show the generation algorithms and cut diagrams of several boy surfaces, and generate mathematical graphics using script code with custom syntax. for related software, see: Mathematical graphics visualization tool. This software is free and open-source. QQ chat group: 367752815 In geometry,Boy's surfaceIs an

Building VPN Campus network to realize resource sharing

The current network construction has been developed from the original regional network to cross-regional, trans-city wide area Connection, and the security requirements of the network and the increasing carrying business, with the original means of networking many problems difficult to solve. Because of the inherent advantages of MPLS VPN technology, the special network has solved the problems that bother users and integrators. The following is the us

New Generation Optical Network networking technology

clear boundary, Do not want to provide their own internal network information to other people to share. This kind of function is distinct and has the characteristic of stratification, it is the main characteristic of overlapping model. The Peer-to-peer model unifies the control plane of the optical transmission network level and the Service Exchange network level, uses the unified control plane, from the control point of view, they are equal, does not divide the upper and lower level, its addr

16-point-based 4dit-fft implementation

The idea of the C program is roughly to clarify, usually not programming, a lot of minor issues, but fortunately accompanied by a mother-in-law, quickly resolved. Draw a 16-point FFT. This is not an optimized program, but it should be the case for a clear idea. The next step is FPGA. Japanese words are not backed up yet. This week is messy, and every week is messy. Similar to the previous program, the four-point data input is divided into eight equations in the real imaginary part. About the ro

Using the cosine theorem, the formula of dot product is derived from the Point product definition.

First, the cosine theorem is proved:Having an edge of a, B, c, the corresponding angle is a_angle, B _angle, c_angleThe following relationship can be found as a diagonal line from the point to the corresponding edge:(1)A = B * cos c_angle + c * cos B _angle(2)B = a * cos c_angle + c * cos a_angle(3)C = a *

Pro/E set of various Curve Equations

springColumn CoordinateEquation: r = 5Theta = T * 3600.Z = (sin (3.5 * theta-90) 24 * tFigure 12. Linear line.Playing the cardEquation: A = 10X = 3 * a * t/(1 (t ^ 3 ))Y = 3 * a * (t ^ 2)/(1 (t ^ 3 ))Figure 23. helical curve)Cylindrical)Equation: r = TTheta = 10 t * (20*360)Z = T * 3Figure 34. Butterfly CurveSpherical CoordinatesEquation: FIG = 8 * tTheta = 360 * T * 4Phi =-360 * T * 8Figure 45. InvoluteCartesian coordinate systemEquation: r = 1Ang = 360 * tS = 2 * pI * r * tX0 = S *

Original Blu-ray Disc + mandarin dubbing + Chinese subtitles and commentary subtitle retention pop-up menu for Dummies tutorial

find the 00000g master file "22.7. m2ts. Figure 7 Then, the "bdedit" software is used to further analyze the "playlist" and "clipinf" of the main file ". Open "bdedit" and click "folder" on the left of the "read" button to specify The file information of "index. bdmv" and "movieobject. bdmv" is read in the "E: \ the_last_samura" window. Figure 8 You do not need to perform any operations here. Click the next "playlist" window. The program will not pre-read data at the beginning. Click

Practical application of IPv6 routers in 3G Mobile Communication Systems

. There are many ways to integrate the IPv6 router service on the carrier's core Backbone Network: IPv6 private network, Dual Stack IPv4-IPv6 router backbone network, or the existing MPLS backbone network can be run on multiple different data link layers. If IPv6 data traffic and generated business income meet the required investment and risks agreed by both parties, users can deploy these solutions on the backbone network. We need a way to build a re

Watch Huawei NetEngine enterprise vro debut

The performance of Huawei enterprise-level routers is still very good, and the market demand is gradually increasing. Here we will introduce the Huawei NetEngine enterprise-level routers to you, quidwayNetEngine 20E/20 series routers are the fifth-generation enterprise-level high-performance Routers developed by Huawei Technology Co., Ltd. for carriers, industry networks, and enterprise networks. NE20E/NE20 series enterprise router according to the number of business slot can be divided into NE2

The application of network slicing in 5G

on, may be necessary in some slices, but are not required in other network slices. Operators can tailor their network slices in the way they want, and may be the most cost-effective way.How to implement network slicing between the two (2) Edge and core cloud network slices: ip/mpls-sdnThe software-defined network, although a very simple concept when introduced first, is now becoming more and more complex. In the case of overlay, SDN technology is abl

How to apply a patch for Linux source code

For example, I need to apply this patch for my Linux source code:http://git.kernel.org/cgit/linux/kernel/git/davem/net.gi t/diff/?id=fe82b3300ec9c0dc4ba871f9a58b265aadf4e186First, I copy this paragraph to a file in local directory:/usr/src/linux-4.3/patch.file."Diff--git A/net/mpls/mpls_iptunnel.c B/net/mpls/mpls_iptunnel.cIndex 67591AE.. 64afd3d 100644---a/net/mpls

An extension of "turn" Euler's integral

Solve $$\int_0^{\frac{\pi}{2}} {{{\ln}^2}\sin XDX} = \int_0^{\frac{\pi}{2}} {{{\ln}^2}\cos XDX} $$ value.Apparently \[\int_0^{\frac{\pi}{2}} {{{\ln}^2}\sin XDX} \underline{\underline {{\text{order}x = \frac{\pi}{2}-t}}} \int_0^{\frac{\ Pi}{2}} {{{\ln}^2}\cos xdx}.\]Remember to ask for integral for $i$, notice(1) $\int_0^\pi {{\ln}^2}\sin \left (x \right) dx} = 2\int_0^{\frac{\pi}{2}} {{{\ln}^2}\sin XDX} = 2

Time-domain and frequency-domain transformation --- mathematical derivation of Fourier Series

Not to mention nonsense: 0. Overview-Demand Analysis-function description-restrictions and defects improvement + knowledge preparation 1. essential differences between Taylor series and Fourier series, Taylor's expansion 2. Function projection and vector orthogonal 3. the derivation of the two invariant functions is e ^ X, SiNx, and cosx, Which is why Fourier conversion is required! 4. Fourier technology push process 5. Appendix references 0. In some cases, especially in image processing, the am

PHP Settings Cookies Advanced usage

Function Getvis ( $pagesid, $retime) {Global $err, $conf, $HTTP _cookie_vars,$_cookie; if (isset ($_cookie[' ant ')) $cot =$_cookie[' ant '];ElseIf (isset ($HTTP _cookie_vars[' ant ')) $cot = $HTTP _cookie_vars[' ant '];else $cot = ';$cos =preg_split ("/x/", $cot);$max =sizeof ($cos);for ($c =0; $c if (strlen ($cos [$c]) ==10) {$id =substr ($

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