cisco layer 2 gigabit switch

Example: 3026 2012 5012. The value of 2nd bits is 0 ~ 4 indicates that it is a layer-2 switch. 3550. The fifth digit is 5 ~ 9 indicates that it is a layer-3 switch. LI (LitesoftwareImage) indicates that the device is a weak feature version. SI (StandardsoftwareImage) i

R1 configuration:router>enRouter#conf TR1 (config) #int f0/0R1 (config-if) #ip add 192.168.10.2 255.255.255.0R1 (config-if) #no shR1 (config-if) #int F0/1R1 (config-if) #ip add 192.168.20.254 255.255.255.0R1 (config-if) #no shSW1 configuration:switch>enSwitch#conf TSwitch (config) #hostname SW1SW1 (config) #lin vty 0 15SW1 (config-line) #password CCNASW1 (Config-line) #loginSW1 (Config-line) #exitSW1 (config) #enable password 123456SW1 (config) #int vlan 1SW1 (config-if) #ip add 192.168.20.1 255

the above technologies on CISCO switches to address typical Layer 2 attacks and spoofing, to prevent man-in-the-middle attacks, MAC/CAM attacks, DHCP attacks, and address spoofing in the exchange environment, more importantly, address management can be simplified through the deployment of the above technologies, track user IP addresses and corresponding

describe how to combine and deploy the above technologies on CISCO switches for typical Layer 2 attacks and spoofing, to prevent man-in-the-middle attacks, MAC/CAM attacks, DHCP attacks, and address spoofing in the exchange environment, more importantly, address management can be simplified through the deployment of the above technologies, track user IP addresse

server and the client are in the same network segment and are not DHCP relay agents, for Cisco's DHCP In the case of a server, if a request packet with Option82 is received, it is considered a request message from a DHCP relay agent, and the Giaddr field of the message is checked, but because it belongs to the same network segment, the field is 0.0.0.0 DHCP. The server will consider an illegal address, and this message will be discarded, causing the client to obtain no IP address(iv)

of using Server Load balancer to improve the scalability, availability, and manageability of Server clusters. This chapter mainly discusses the deployment of Server Load balancer and several solutions for deploying Server Load balancer in the existing network. We will also discuss how to design highly available solutions to implement fault tolerance for different network components throughout the network, including Load balancer. Before discussing the network structure, we need to understa

to say, after you set the password for level 1, you will be asked to enter the password next time you connect to the switch and enter K, this password is the password set for level 1. Level 15 is the privileged mode password that you enter after you enter the enable command. Step 2: Set the VLAN name. Because the four VLANs belong to different switches, the command for VLAN naming is VLAN 'vlan No. 'name'

Welcome to the network technology community forum and interact with 2 million technical staff. 5. configure L2 Port 5. 1. configure Trunk: Router (config) # interfacefastethernetxy (take fastethernet as an example, like gigabitethernet) Router (config-if) # shutdownRouter (config-if) # switchportRoute Welcome to the network technology community forum and interact with 2 million technical staff> go to 5. con

Lan exchange technology can also be called layer-2 Switch Exchange Technology, the content mainly includes the working principle of Layer 2 switching, network loops, and how to use the Spanning-Tree Protocol to solve Network loops, VLANs, and VTP technologies, this article m

Lab objectives:1. Master the configuration of the switch Tag VLAN;2. master the basic configuration methods of layer-3 switches;3. Master how to configure VLAN routing for layer-3 switches;4. layer-3 switches are used to implement VLAN visibility and mutual communication;Tec

Route Use sub-interfaces Configure fa0/0 with no IP address and activate Interface fastethernet0/0 No IP Address No shut Configure sub-interface 1Fa0/0.1 Interface fastethernet0/0.1 Encapsulation dot1q 2 (vlan2) IP address 10.10.10.1 255.255.255.0 No shut ConfigurationSub-interface 2Fa0/0.2 Interface fastethernet0/0.2 Encapsulation dot1q 3(Vlan3) IP address 255.255.20.1 255.255.255.0 No shut SW Configuration: Create vlan2 and vlan3 VLAN Database VLAN