what netmask

In Linux, obtain the IP address of the specified network and the interface of netmask: Int get_ip (char * ipaddr, char * netmask, const char * ethname){Int ret =-1;If (ipaddr & netmask & ethname){Int FD, intrface;Struct ifreq Buf [16];Struct ifconf

/Etc/sysconfig/network-scripts/ifcfg-eth0 The configuration file of the wireless network card cannot be found in this directory. This is strange. # RealTek semiconduco., Ltd. RTL-8139/8139c/8139c +Device = eth0 Interface NameBootproto = none static

Natmask is the subnet mask, and the IP with the operation, to get a domain.IP consists of 4 segments, example 172.25.45.10 each segment consists of a 8-bit binaryThat is, 11111111.11111111.11111111.11111111, this represents 255.255.255.255.The same

Netmask Address Prefix Length hosts/class C'S/class B'S/class A's255.255.255.255/ + 1255.255.255.254/ to 2255.255.255.252/ - 4255.255.255.248/ in 8255.255.255.240/ - -255.255.255.224/ - +255.255.255.192/ - -255.255.255.128/ -

What is the difference between 192.168.2.1/24 and 192.168.1.1/24?     Is two different network segments, the subnet mask is 24,The first value range is 192.168.2.1 ~ 255,The second value ranges from 192.168.1.1 ~ 255These are two CIDR blocks. The

[Root @ localhost ~] # Ifconfig eth0: 1 192.168.10.63 netmask 255.255.255.0 up (add IP on this Nic) Ah, only one sentence [Root @ localhost ~] # Ifconfig- Delete[Root @ localhost ~] # Ip addr del 192.168.10.63 dev eth0: 1 Warning: Executing

Subnet Mask:What is a subnet mask subnet mask cannot exist alone,It must be used in conjunction with an IP address. The subnet mask has only one effect,is to divide an IP address into two parts: network address and host address.The subnet mask

I. Introduction of IPMPIP network multipath (IP networks multipathing, IPMP) provides physical interface fault detection and transparent network access failover capabilities for systems with multiple interfaces on the same IP link. IPMP also

The route command is used to display and manipulate IP routing tables. To achieve communication between two different subnets, you need a router that connects two networks, or a gateway that is located in two networks. In a Linux system, routing is

The use of the Linux route command is detailed--http://www.cnblogs.com/snake-hand/p/3143041.htmlOne Linux command per day: Route command--http://www.cnblogs.com/peida/archive/2013/03/05/2943698.htmlThe route command is used to display and manipulate

　 View the Linux kernel routing table　　Use the following route command to view the Linux kernel routing table. # route Destination  gateway      genmask          flags Metric Ref use IFAC E 192.168.0.0   *                 255.255.255.0  u        0  

Metalink Note 283107.1 describes how to set up an IPMP for a VIP, where the setup process is recorded. o Existing 10g RAC installation ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ the ^^ ^^ ^^ ^^ ^^ ^ for Existing 10g RAC installations, use SRVCTL to Modify

Summary: In this article, we will discuss how to deploy the smoothwall proxy server in a typical campus network environment. This section mainly discusses how to configure Static Routing in multiple VLANs (because of other problems such as

But every MySQL DBA must have heard of MHA's high-availability program, and many companies have made MySQL highly available by doing two development of MHA. If MHA does not combine VIP, it is troublesome to change the configuration of the database

BrieflyThe Qnetworkaddressentry class is supported by a network interface that stores an IP address, subnet mask, and broadcast address.Each network interface can contain 0 or more IP addresses, which in turn can be associated to a subnet mask

Reprinted: Http://blog.csdn.net/zhangyang0402/archive/2010/06/25/5695050.aspx  I. Network Topology     2. Configure the network   1.Network Configuration of A, gw1, gw2, and B   A: Eth0: Ipaddr: 192.168.1.2 Netmask: 255.255.255.0 Gateway: 192.168.1

Linux Network attribute configuration commands and management details I. Linux Network attribute Configuration 1. Network Access for Linux Hosts IP/NETMASK: Implement Local Network Communication Routing (GATEWAY): Cross-network communication is

Using Web Sphere Edge Server to build Load Balancing for cold rolling Systems A user's ERP system has been running for eight years. The Cold Rolling Workshop system has been running for nearly five years. Its core business system is the cold rolling

Network configuration of NIC in Linux systemThe Ifconfig command makes the Linux kernel aware of some network interfaces such as software loopback and network cards, so that Linux can use them. In addition to these usages described above, the

How to add IP under CentOS First, add a single IP method: # cd/etc/sysconfig/network-scripts # CP Ifcfg-eth0 ifcfg-eth0:0 # Nano ifcfg-eth0:0 Copy Code Copy a eth0 file with the CP command, the new file name is eth0:0, and then edit the file with