In wireless networking, we can simply divide it into two aspects from the user's perspective: home wireless networking and enterprise wireless networking. In enterprise networking, due to the wide network coverage and complicated structure, different Wireless AP network modes will be selected. Next we will introduce the wireless relay mode.
The wireless relay mode, as its name implies, is the function of a
The complexity of the network structure also makes it difficult for us to maintain some of its services. Sometimes, some faults may inevitably occur. Here we will mainly explain the problem that the client in the DHCP relay fault cannot obtain the IP address of the same network segment as the IP address through the relay proxy.
DHCP relay troubleshooting ◆ Networ
This section lets us learn the next Frame RelayFrame Relay in CCNA's exams and daily work are seldom useful, but we still want to know, it is after all a CCNA in the focus.Frame Relay (Frames relay)Also referred to as FRFrame Relay is an important WAN technology, its main function is to connect two or more long-distanc
Lab environment:
1. the topology is simple, but classic. The experiment is completed using the GNS simulator.
2. Four 36XX routers, one of which is configured as FR-SW. The router is directly connected to the frame relay switch.
Lab requirements:
1. configure a vro as a frame relay switch
2. The other three routers are directly connected to the frame relay switch
Frame Relay is becoming increasingly popular today, but it has been widely used in past designs.
This blog post briefly summarizes some concepts of FR from the second layer.
Before introducing frame relay, let's first understand the differences between broadcast media and non-broadcast media:
Broadcast media): Ethernet, token-ring, FDDI
Features:
The source can call all connected (L
A frame relay switch is a useful device, either in the lab or elsewhere. Like the boot register, the setting of the frame relay switch is also very profound in the router settings. You can build many different network models by learning how to configure a frame relay switch. As we are a "service provider", we must be able to independently allocate the full-induce
Frame Relay WAN Protocol Configuration 1. Frame Relay is a high-performance WAN protocol, which runs on the physical layer and data link layer of the OSI reference model. It is a data packet exchange technology and a simplified version of X.25. It skips some strong functions of X.25, such as window technology and data re-transmission technology, but relies on high-level protocols to provide error correction
4.7 Frame-Relay Static Route
Purpose:
1. Master the Static Routing Technology deployed on frame relay.
2. Achieve communication between different branches through static routing.
Tutorial topology:
650) this. width = 650; "src =" http://img1.51cto.com/attachment/201308/172518838.png "title =" 4.7.png "/>
Tutorial steps:
1. Based on the topology shown in the figure, simulate the frame
Topology map:
1. Configure the router R4 as a Frame relay switch
Frame-relay switching * configured as Frame Relay switch
2. Configure the interface's clock frequency, package type, LMI type and Frame Relay DCE on the router R4
int s0/0
No shut
Clock rate 64000 * Set clock frequency
Encapsulation Frame-
In the LAN working environment, encounter network virus attack is always unavoidable things, once the workstation accidentally infected with the network virus, then it can not be normal access to the Internet; In addition, users to change the IP address at will, the local area network is prone to the phenomenon of IP address conflict, once such a failure occurs, Workstations will also not be able to access the Internet properly. In order to control the Internet access stability, this article sta
In the main master or master copy, MySQL will generate the corresponding relay log under the home directory, this document summarizes the definition and explanation of these related parameters1. What is relay logThe relay log, like the binary log, consists of a set of numbered files containing events, describe database changes, and an index file, the contains the
1.1.1. If a crash happens thisconfiguration does not guarantee that the relay log info will be consistent
[Environment description]
Msyql5.6.14
[Error message]
When mysql slave is started, the following Warning occurs in error. log:
[Warning] Slave SQL: If a crash happensthis configuration does not guarantee that the relay log info will beconsistent, Error_code: 0
This Warning information has no impact on t
only wireless hotspot. Only at the same time do the client, and do wireless hotspot to meet the requirements of mobile phone to do FQ router. Is there any way to do it? The most straightforward approach is to use 3G Internet for mobile phones and then provide wireless hotspots out. This ability basically now all smartphones can do. But 3G Internet is much more expensive AH.Mobile phone can be connected to both uplink wireless, and open the wireless hotspot to share the environment to other devi
Frame Relay is a connection-oriented two-layer packet switching technology, the core idea is to use a unique DLCI (link identifier) number to build a virtual channel to the destination, when the packet is forwarded, through the DLCI to select the path. It is a network technology that differs from the two layer Mac switching technology and the three layer IP routing technology.Three basic terms:PVC: Permanent virtual link, virtual link is established p
It is well known that the replication of MySQL5.1 is rather rotten. Each version of MySQL updates about sync every time you see a whole bunch of them. But the MySQL 5.1 performance is more outstanding. So you can't resist using MySQL 5.1. So you also have to meet a few bugs frequently. Such as:
Copy Code code as follows:
Mysql> Show Slave Status\g
1. Row ***************************
Slave_io_state:waiting for Master to send event
master_host:192.168.10.118
Master_user:repl_wu
mast
Today in the MySQL data directory of the local found many similar hostname-relay-bin.0000* files, the file is generally in the MySQL slave instance exists. The main purpose is to record the information of master-slave synchronization, which will normally be deleted automatically.
This machine is not configured with Master, slave, and the source is really not clear. Since it is used on the slave, it can be relieved to delete. Delete the log file on th
box is displayed: enter the domain name, which must be the domain name of the mailbox on the Internet, or the part after the @ you sent the email. 5. Right-click "SMTP virtual server" and select "properties ", here, "access"-"relay restrictions" and "pass"-"advanced" Settings (the domain name is set to your own domain name, PS: Fully Qualified Domain Name, I used the local prefix, you can also skip this
[Experimental environment] veryhuo.com
C3640-IK9O3S-M Version 12.4 (10) veryhuo.com
[Tutorial Objective] Lie's Fire Network
The tunnel technology is used to expand the frame relay switch simulated by the router to make up for the insufficient frame relay interface caused by limited router interfaces. Lie-fire-network
[Experiment topology]
Liehuo.net
Veryhuo.com
[Experiment description] liehuo.net
In the e
Digital Network.
3. Packet Switching Network: Through packet switching, network devices can share a point to transfer data packets between devices through the operator network. Packet Switching mainly uses the statistical multiplexing technology to achieve circuit sharing. Such as frame relay, ATM, and X.25.
Frame-relay
Frame relay is a grouping method used to
The wireless mesh network is comparable to a small-sized Internet, which can better play a wireless role in enterprises. Then, the wireless mesh network is also combined with other technologies to play a more powerful role. The following is a detailed description of the knowledge of Wireless Mesh Network + cooperative relay technology.
Combination of Wireless Mesh Network and cooperative Relay Technology
1.
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