How to implement the single-arm router function in LINUX-Linux Enterprise Application-Linux server application information, the following is a detailed description. Find a network card such as 3COM (supporting VLAN), patch the VLAN in the kernel, and confirm that you need several network segments to set several IP addresses and then set several MAC addresses. (You can change the MAC address on your own in LINUX ). Simulate your LINUX machine into a vr
Article Title: #22312; Linux #19978; #23454; #29616; #21333; #33218; #36335; #30001; #22120; #21151; #33021 ;. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
Find a network card such as 3COM (supporting VLAN), patch the VLAN in the kernel, and confirm that you need several network segments to set severa
processed.
Network Communication fault
Eth1: Transmit error, Tx status register 82. probably a duplex mismatch. see Documentation/networking/vortex.txt Flags; bus-master 1, dirty 9994190 (14) current 9994190 (14) Transmit list 00000000. f7171580. 0: @ f7171200 length 800001e6 status 000101e6 1: @ f7171240 length 8000008c status 0001008c ....
This prompt is available on the 3com Network. I feel that it will not be very serious if there is not a lar
. For details, see "alarm module and log ".
◆ Basic irrelevant
Keyboard: unknown scancode e0 5e
Undefined key values are received on the keyboard. If this occurs frequently, it may be caused by a keyboard problem. This is sometimes prompted for special keys or key combinations in linux. Check whether the server's keyboard is pressed. Otherwise, ignore it.
◆ Basic irrelevant
Uses obsolete (PF_INET, SOCK_PACKET)
The system kernel calls some functional modules, which may occur during the first call
Nowadays, with the continuous development of enterprise information technology, various applications such as voice, video, storage, and security are emerging one after another, which is overwhelming. However, few people know how these applications are coupled with the basic network. Even the network supervisor of a company is confused when Dr. M asks this question.
"Old Wang, do you know how applications such as voice, video, and security are coupled with the network ?" Once, in Dr M's study, Dr
routing protocols, Nat, etc.
Cisco: familiar with the Cisco product line. vswitches and routers of major models are configured. unfamiliar devices can create independent data query configurations. Familiar with some major Cisco technologies, such as VoIP, QoS, and ACL;
Huawei-3com: familiar with the Huawei-3com product line; will configure the main models of switches and routers, not familiar with the
under 2016 in different VLANs and send them through the upstream Access port. Currently, 2008/2016/3026 developed by Huawei 3Com supports the vswitch PVLAN function.
Vswitch PVLAN configuration procedure
To create a VLAN, run the following command: [2016] vlan-id: Set the VLAN type to primary. The command is as follows: [2016-vlan100] isolate-user-vlan enable adds ports to a VLAN. Both the primary vlan and the secondary vlan are the same)
Run the fol
cases, communication may be affected. Computers with abnormal Intranet Communication must be processed.
Network Communication fault
Eth1: Transmit error, Tx status register 82.
Probably a duplex mismatch. See Documentation/networking/vortex.txt
Flags; bus-master 1, dirty 9994190 (14) current 9994190 (14)
Transmit list 00000000 vs. f7171580.
0: @ f7171200 length 800001e6 status 000101e6
1: @ f7171240 length 8000008c status 0001008c
....
This prompt is available for
in embedded systems. Therefore, the file management function of embedded operating systems should be easily disassembled and various memory file systems should be used.
Middleware provides better hardware adaptability, that is, good portability.
There are about 40 embedded operating systems for information appliances in the world. Currently, the most popular EOS products on the market, including the Palm OS of a subsidiary of 3Com, account for 50% of
Definition Statement for different CPUs around 108 lines of the file, which describes the boot parameters
After the Boot ROM disk is defined correctly, the TARGET machine can be properly guided.
According to our configuration, here we should modify it:
# Elif (CPU = i80133)
# Define DEFAULT_BOOT_LINE
"ElPci (0, 0) xmdong: vxWorks
H = 10.10.0.150 e = 10.10.0.151 u = target pw = target tn = target"
Parameter value description
Boot device elPci 3COM 3C9
://cesdis.gsfc.nasa.gov/linux/drivers/eepro100.html, there is a discussion about etherexpress 100b pro. you can download a C-source driver and compile it into the kernel.
If you have tried the above and your Nic does not recognize it, you need to check the driver online. searching on the Internet is a learning that seems simple and actually reflects experience. we recommend that you find the driver for the Linux Nic from http://cesdis.gsfc.nasa.gov/linux/drivers/ .you can find the driver for th
whether the server's keyboard is pressed. Otherwise, ignore it.◆ Basic irrelevantUses obsolete (PF_INET, SOCK_PACKET) The system kernel calls some functional modules, which may occur during the first call. This is generally related to the use of debugging tools.◆ Network communication faultsNeighbour table overflow. This prompt appears. Generally, some computers in the LAN are infected with viruses. In severe cases, communication may be affected. Computers with abnormal Intranet Communication m
defined State (define), and the other macros are in the UNDEF state, that is:
The following is a reference clip:/* Network Driver options */# Define include_end/* Enhanced Network Driver Support */# UNDEF include_dec21x40_end/* (end) DEC 21x4x PCI interface */# UNDEF include_el_3c90x_end/* (end) 3Com fast etherlink xl pci */# UNDEF include_elt_3c509_end/* (end) 3Com etherlink III interface */# UNDEF includ
driver is updated. But there are still some special cases. No matter how you modify it, there is no such option. What should we do? Next, let's look at the following method as omnipotent!
Step 2 of the second method for registry modification, click Start, select Run, and type regedit to bring up the registry. Step 2: Find driverdesc in the primary key of HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ class {4d36e972-e325-11ce-bfc1-08002be10318} 000, 2nd, 0001, and 0002. The conten
defined State (define), and the other macros are in the UNDEF state, that is:
The following is a reference clip:/* Network Driver options */# Define include_end/* Enhanced Network Driver Support */# UNDEF include_dec21x40_end/* (end) DEC 21x4x PCI interface */# UNDEF include_el_3c90x_end/* (end) 3Com fast etherlink xl pci */# UNDEF include_elt_3c509_end/* (end) 3Com etherlink III interface */# UNDEF includ
, select Properties to pop up a dialog box for local Area Connection properties, click Configure, select Advanced, and select "Network Address" in the left column "Properties" (note: Some cards are called "network addresses, some use" network Address ", the Intel network card with" locally administered addresses ", of course, some network cards do not have this option), and then select the right Column box" value "in the above one single option (not" no "), at this point in the box to the right
the hardware is stable, you will be blamed if the end user does not like the application. the attributes of Access point for the design of the network, Access Point is the most important component, it determines how many clients to support, encryption level, access control, login, network management, client management, it manages all the worldly possessions. Select the Access node as carefully as you would select the router. the network capabilities of Access point to detect its
Hkey_local_machinesystem currentcontrolsetcontrolclass {4d36e972-e325-11ce-bfc1-08002be10318}000, 0001, 0002 Wait for the primary key, look for DriverDesc, the description of the network card to be modified, such as Intel's network card will be described as "Intel (R) pro/100+ Management Adapter", 3Com network card will be described as "3Com EtherLink XL 10/100 PCI for Complete PC Management NIC (3C905C-TX
to use IP telephony, different objects can have different methods.Small and medium-sized enterprises and individual consumers are generally to buy the services of telecommunications operators, using their IP network across the country to dial IP telephony, so as to reduce operating costs. For some large enterprises or industries, some already have their own wan, they can also use the original network resources to run their own IP phone. Active in the domestic market to develop IP telephony netw
authenticate the server connection with the central point and to authenticate the server with the local connection for routing functions.
(3) Install VPN RAS and Routing Admin (mpri386.exe) software.
(4) Restart the computer 3 times during the installation process to complete the installation of Routing and RAS. After the installation is successful, the Routing and RAS Admin program items are added to the program items, and the next step is to configure VPN dialing and routing.
(5) Add a VPN
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