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exchange router and the layer-3 Switch in Packet Exchange operations. Generally, a vro performs Packet Exchange Based on a microprocessor, while a layer-3 Switch performs Packet Exchange through hardware. Therefore, compared with a layer-3 Switch, vro features are more powerful, and functions such as NAT and VPN cannot be completely replaced. Exchange The interconnection of subnets in the same LAN can be replaced by a layer-3 switch, but the lan must be interconnected with the public network to
1. Exclusion When we face the fault and analyze the problem, we have learned to use the exclusion method to determine the direction of the fault. Based on the observed fault phenomenon, this method lists all possible faults as much as possible, and then analyzes and resolves them one by one. The principle from simplicity to complexity should be followed to improve efficiency. This method can be used to cope with various faults. However, maintenance personnel must have a strong logical thinking a
The OSI Layer-7 reference model is as follows: bottom-to-bottom, physical layer-data link layer-network layer-Transport Layer-Session Layer-presentation layer-application layer. First, they work at different layers. Routers work at the network layer, while switches work at the data link database layer. Second, the data is forwarded based on different objects. The vswitch uses the physical address (MAC address) to determine the data forwarding addres
ipaddress2.1.1.254255.255.255.0 Breakthrough method: If the MAC address of the vswitch is invalid, you can change the IP address to 1.1.1.1 to access the Server. An invalid user preemptible address 1.1.1.1 may cause an IP address conflict. If you set the IP address to the IP address of the gateway, the communication of the entire VLAN will also be affected. By modifying Windows Settings, you can prevent users from modifying the "network" attrib
. This is mainly because the content in the RAM memory will be lost after power failure. If the network administrator wants to make changes to the vswitch during its operation, the change will remain valid at the next startup. You need to save the changed content in the startup configuration file. To achieve this, run copy running-config startup-config. This command saves the running configuration file to the startup Switch configuration file. In thi
. This is mainly because the content in the RAM memory will be lost after power failure. If the network administrator wants to make changes to the vswitch during its operation, the change will remain valid at the next startup. 498) this. style. width = 498; "> You need to save the changed content in the startup configuration file. To achieve this, run copy running-config startup-config. This command saves the running configuration file to the startup
Broadband Network access private switches are generally directly connected to user terminals. Once a user terminal is infected with the worm virus, the virus will seriously consume bandwidth and the capital of the private switch, and even cause network paralysis, this scene has long been used to Slammer and shock wave events. What security risks does a broadband access switch face after all? How can we resolve these risks? Next we will remind you one by one.
Generally, a vswitch has multiple Ethernet (physical) ports, and each port can be configured as needed to implement different functions. The vswitch itself has multiple VLANs (usually the default VLAN is 4094 ). VLAN is only a virtual division. Physical transmission must be specified to a specific Ethernet port. The Ethernet port has three links. Generally, a vswitch
Vswitch F5 interconnect 1. Two Network cables are connected. One inside and one outside the vswitch interconnect port is configured as Access, and F5 switches interfaces to Vlan, the vlan tag does not need to be configured in the same way as the switch interconnect port, but it is recommended to be configured in the same way, so it is easy to differentiate. In the vlan configuration, no tags are required fo
Vswitch classification and functionsA vswitch is the "cornerstone" for building a network platform, also known as a network switch. It is also a type of hub, but it is quite different from common hub functions. A general hub only serves to receive and send data, while a switch can intelligently analyze data packets and choose to send them out. For example, we have sent a batch of packets specially sent to s
Vswitch classification and functions A vswitch is the "cornerstone" for building a network platform, also known as a network switch. It is also a type of hub, but it is quite different from common hub functions. A general hub only serves to receive and send data, while a switch can intelligently analyze data packets and choose to send them out. For example, we have sent a batch of packets specially sent to
. Comparatively speaking, the cascade method is more advanced. As for the expansion mode of the hub to be upgraded, you should determine the network scale based on the future development trend. In addition, do not upgrade the hub to a vswitch in the subordinate network of the hub. If the hub is placed at the first level to connect to the server, and the switch is placed at the next level to connect to the workstation, data exchange is still conducted
. Configure the following on the vswitch: [Switch] vlan 10 [Switch-vlan10] quit [Switch] interface vlan 10 [Switch-vlanif 10] ip address 192.168.1.2 24 // ensure that the IP address of the router is in the same network segment [Switch-vlanif 10] quit [Switch] interface ethernet 0/0/1 [Switch-interface ethernet 0/0/1] port hybrid untagged vlan 10 // Add vlan10 to the untag Mode [Switch-interface, ethernet 0/0/1] quit // After completing the preceding
Vro password recovery:1. Enter show version in user mode and write down the original value of the configuration register. For example, 0X21022. Turn off the vro power, connect the vro to the vswitch using the console line, and open the Super Terminal.3. Power on the vro and press the Break Key within 60 seconds to enable the vrommon mode.4. Enter confreg 0x2142 in rommon 1>, boot from Flash, but do not load the configuration file5. Enter reset in romm
Vswitch cluster technology is worth learning. Here we mainly introduce vswitch cluster technology and connection methods. Currently, some vswitches do not provide cascade ports, and some vswitches use cascade ports by default. Therefore, test the function in actual use. If cascade ports are not provided, the common ports of the two switches can be connected through a crossover line to achieve cascade. Stac
Install Ubuntu 12.04 and update the system Apt-getupdate; Apt-getupgrade; Install the required package Apt-Get install automake Autoconf gcc uml-utilities libtool build-essential PKG-config Linux-headers-'uname-R' Download the source code package of open vswich Wget http://openvswitch.org/releases/openvswitch-1.10.0.tar.gz. Compile open vswitch (To build the Linux kernel module, so that you can run Thekernel-based switch, pass the location of the k
Drawing the cascade relationship of a vswitch is the most basic requirement for network O M. Two tables of Layer 2 or Layer 3 switches are involved. One is the ARP table and the other is the MAC address table. The knowledge involved is nothing more than the ARP protocol and the switch (or the bridge) store and forward these two knowledge points. During data transmission, the L2 Switch records the IP address and MAC address of the host that is communi
Centos7 vswitch Configuration Vswitch Configuration Inux VLAN configuration (vconfig) Install vlan (vconfig) and load the 8021q Module [Root @ test0001 ~] # Yum install vconfig [Root @ test0001 ~] # Modprobe 8021q [Root @ test0001 ~] # Lsmod | grep-I 8021q Use the linux vconfig command to configure a vlan [Root @ test0001 ~] # Vconfig add eth0 10 Added VLAN with VID = 10 to IF-: eth0 :- [Root @ test0001 ~]
Sniffer -- configure the vswitch port Image Sniffer software is just a glimpse of me. Therefore, this tutorial is only intended for beginners. However, if you do not have a certain network foundation, I am afraid it will make you feel hard. If you are interested, come and play with me ~ Currently, we usually need to monitor sniffer in an exchange environment. Therefore, we need to define the Image Port first. Why does the Image Port need
Role of the switch serial port (Trunk: The following two encapsulation types can be used for relay over Ethernet through the serial port of the switch: -IEEE 802.1Q -ISL (Inter Switch Link, Cisco private) Procedure Step 1: Add a VLAN to the vswitch Switch1 # vlan database Switch1 (vlan) # vlan 2 Switch1 (vlan) # vlan 3 Switch1 (vlan) # exit Step 2: add the interface to the corresponding VLAN Swital # config terminal Switch1 (config) # interface fast
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