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Mac port installation postgres92-server 1. make sure that macports www.2cto.com is installed on mac. sudo port install postgresql92-server3. after the installation is complete, check the shell information after installation and initialize the S

Huasai firewall implements single-arm routing to implement inter-VLAN communication network equipment: One USG2130, several S2700 switches www.2cto.com customer requirement: VLAN division on the switch and single-arm routing on USG2130, at the same

Trunk, hybrid, access configuration and application on the vswitchThe link type of the Ethernet port: Access type: the port can only belong to one vlan and is generally used to connect to a computer. Trunk type: the port can belong to an end vlan

How to associate GNS3 with a real NIC/how to simulate a switchI believe someone is familiar with the GNS3 network simulator, but I find that some people around me will not even use PT. Of course, I am not degrading packet tracer. He has his value.

The previous day, a power failure caused a switch in the branch to fail to start. Fault description: The day before yesterday, our branch colleagues called us and said they were connected to the organization. I went through the ping test and found

IP-MAC bound switch settings 1. solution 1: bind a port-based MAC address to a Cisco 2950 switch as an example. log on to the switch, enter the management password to enter the configuration mode, and run the following command: switch # config

The h3c layer-3 Switch acl is an example of a new library that can only access the electronic reading room, and cannot access other hosts on the Intranet, so as to avoid security impact. the IP address of the On-Internet www.2cto.com electronic

The DHCP service has become an indispensable component in the network. DHCP can be seen in the Windows server operating system or in the IOS software of the Cisco router. We can also see the importance of the DHCP service to the enterprise network.

We have already learned about the principles and circuits of the Bluetooth protocol stack. Now we will introduce the SoC Structure Design for the embedded Bluetooth protocol stack. According to the hardware structure of the above Bluetooth protocol

We have analyzed some protocols and the content of the protocol stack. I believe everyone understands the content of the H.323 protocol. Here we will explain the development of this protocol stack. Developing an H.323 protocol stack is an extremely

When we configure hardware devices, we often see some wireless network protocol standards. The protocol standards vary with hardware. The wireless network card of the notebook is often labeled as 802.11a/B/g or 802.11a/g/n. In fact, it refers to the

For the content of PPP and pptp, we will give a brief explanation here. Of course, the installation and configuration analysis is indispensable. PS: After pptpd is started, port 1723 is used, port 1701 is used in l2tpd, after the service is started,

Presumably, you should be familiar with ADSL and other access methods. We have learned that PPPT, PPPoE, and PPPoA should be available. So what are the differences and associations between the three access methods? Let's take a look at it in detail.

Practice. It is not enough to know some knowledge. You need to practice it first. Now we have learned about the SIP protocol. Here we will share the practice process of a netizen's sip invite. I hope it will be useful to everyone. Request sent by

After we have a detailed understanding of DHCP, we also know that it also has some service settings in the applications of a variety of routers and switches. Here we will focus on the configuration of dhcp relay. This time, we will explain the

In the previous article, we explained what DHCP Snooping is. So we have a general understanding of this through the content of the article. Next, we will take a look at the specific operations and steps of DHCP Snooping configuration. The DHCP

Because the current network has exposed more and more disadvantages and people's demand for network performance has improved, researchers have to add many complex functions to the architecture of routers, such as OSPF, BGP, multicast, differentiated

1. hardware or software? Most vrouters and vswitches support IPv6, but these network devices have different forwarding rules. A high-capacity core router processes data packets on its dedicated hardware (such as a dedicated integrated circuit or

After using Outlook Express for a period of time, you will find that the folder for storing emails will become very large, because as the number of emails sent and received increases, a large number of emails occupy the hard disk space. The

Virtualbox -- set the ubuntu Virtual Machine network in win7Using virtualbox in XP to install the ubuntu virtual machine makes it easy to configure network connections. Use nat to access the Internet; use bridging to allow the host to access the