In some settings, we usually see the configuration of the DHCP relay function. In a TCP/IP-based LAN, communication between computers depends on the IP address of the host. Therefore, each server and workstation in the network must have a unique IP address. The IP address allocation method is very important for effective network management.
IP Address Allocation Method
Generally, IP addresses are allocated in two ways based on the local network struct
1.1.1. If A crash happens thisconfiguration does not guarantee that the relay log info would be consistent"Environment description"msyql5.6.14"Error Message"When MySQL slave starts, a warning warning appears in Error.log:[Warning] Slave sql:if A crash happensthis configuration does not guarantee that the relay log info would beconsistent, Error_code: 0This warning information has no effect on MySQL and MySQ
Lab question: it is required that the whole network can reach R5 as the fast Ethernet interface between R6 and r1 of the frame relay switch
The topology used is the ccna standard topology, as shown below:
Else ---------------------------------------------------------------------------------------------------------------------------------
1. First, connect each PVC
Frsw # conf tFrsw (config) # No IP routing// Disable the router routing functionFrsw
We have explained some of the dhcp relay configurations. Here we will mainly introduce the dhcp relay handshake function and the security issue of disabling VLANs. How are these two configurations completed?
◆ Enable/disable dhcp security features on vlan interfaces
When the client obtains an IP address from the dhcp server through dhcp relay, dhcp
Use a cisco router to simulate how to configure a frame relay switch (configure 3640 as a frame relay switch): 3640 (config) # frame-relay switching ---------------------- enable the frame relay switching function of the router 3640 (config) # int s0/0 ------------------------------------- enter the s0/0 interface 3640
PLC uses a ladder chart language that is extremely similar to the circuit diagram of the relay. If PLC is used to transform the relay control system, it is a shortcut to design a ladder chart based on the relay circuit diagram. This is because the original relay control system has been used and tested for a long time a
Environment
In a small office, you can activate China Telecom ADSL Broadband and use a NETGEAR wireless router to share the Internet. In the corner of the meeting room, the signal is weak. How can we effectively improve the coverage of wireless networks?
Solution
Confirm that the original model supports the wireless relay (WDS) function, purchase a new Netgear wireless router, and perform wireless relay wit
The Relay Log cannot be automatically deleted (Neither, relayneither
Check the mysql err log today and find that the following logs will always appear during mysql restart:
[Warning] Neither -- relay-log nor -- relay-log-index were used; so replication may break when this MySQL server acts as a slave and has his hostname changed !! Please use '--
Tags: mysql relay_log failure master-slave copyFirst, the problem descriptionIn MySQL master-slave replication mode, slave reported the wrong "relay log read failure", causing the master-slave synchronization to stop.Mysql> Show Slave Status\g1. Row ***************************Slave_io_state:master_host:10.0.0.93Master_user:slaveusermaster_port:3306Connect_retry:60 master_log_file:dd-bin.002542read_master_log_pos:752973519relay_log_file:dd-
I 've been having trouble with frame-relay these days. I got the following NNI interface a few days ago and now I 've got MFR again. The MFR function is similar to channel-group and can increase bandwidth.
The test topology is shown below:
650) This. width = 650; "src =" http://s3.51cto.com/wyfs02/M01/4D/8E/wKioL1RTLf3wxUuuAADCpAj1fI4739.jpg "Title =" mfr1.png "alt =" wkiol1rtlf3wxuuuaadcpaj1fi4739.jpg "/>
R1/R2/R3 has three endpoints, and R4 is a fra
Frame Relay network in China is a public transport network (such as the Chinese telecom is to provide Frame Relay network services), mainly for the transfer of data service, the user router as DCE connected to the Frame Relay switch as DCE, through the Frame Relay network to establish virtual circuit, virtual circuit w
As we all know, the vswitch ports are both layer-2 interfaces, and these interfaces are connected to physical ports. In a Vlan, these interfaces can be divided into access interfaces and relay ports. If the port of a vswitch uses an access port, it can only belong to a specific Vlan. If the port of a vswitch uses a relay port, it can belong to any Vlan. So when should we use access ports and when should we
The content of the DHCP relay proxy has always been the focus of our attention, so through this understanding, we can further deepen the learning of DHCP. Here we will explain this knowledge. The relay proxy is a small program that transfers DHCP/BOOTP messages between clients and servers on different subnets. According to the RFC, a standard document describing protocol design and related operations, DHCP/
We have learned a lot about the content of the DHCP protocol. In this case, we have also explained some processes and methods for troubleshooting DHCP server faults. Here we will focus on the DHCP relay fault handling process. I hope this will help you.
DHCP relay troubleshooting ◆ typical Networking Environment
Shows the typical networking of DHCP relay. DHCP
Installation configuration and application of sqlrelay
Author:TonyvickyFrom:Linuxsir. orgAbstract:Freetds: A program connecting to SQL Server in Linux. This article does not introduce the installation method of this software. We mainly introduce the configuration and application of SQL relay;Source:Http://www.linuxsir.org/main? Q = node/144
Directory
1. What is SQL relay;Ii. databases supported by SQL
This paper introduces the reason and solution of relay-log in one operation and maintenance practice.
Background: Today in the operation of a MySQL instance, found that the relay-log of its data directory has not been deleted for a long time, has accumulated dozens of relay-log. However, other examples of slave servers do not.
Phenomenon Analysis
Through the coll
MySQL5.1 the Relay log read failure error occurs during master-slave synchronization. Solution: mysql5.1relay
As we all know, Replication of MySQL5.1 is poor. Every version update of MySQL shows a lot about synchronization. However, MySQL 5.1 has outstanding performance. Therefore, we cannot resist the temptation to use MySQL 5.1. Therefore, some bugs are also frequently encountered. For example:Copy codeThe Code is as follows:Mysql> show slave status
There are many things worth learning about in the PPP protocol. Here we will focus on the content of PPP frame relay. First, let's take a look at the basic concepts. PPP: Point-to-Point Protocol. Huawei routers are encapsulated by default and are character-oriented control protocols. HDLC: Advanced Data Link Control Protocol. It is a bit-Oriented Control Protocol and is the default encapsulation of Cisco routers. Fram-
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.