cisco 48 port poe switch layer 2

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Full solution of layer-3 Switch Port initialization process

five stages of STP: blocking, listening, learning, forwarding, and failure. The entire process takes 15 seconds. Therefore, if you are sure what you want to connect to, you can terminate this process. Test the Ethernet Channel Configuration The next step is to test the Ethernet channel, which is bound with the layer-3 Switch Port to provide more Ethernet connec

CISCO PT Simulation Experiment (2) port configuration and management for switches

CISCO PT Simulation Experiment (2) port configuration and management for switchesExperimental Purpose : Master the basic configuration and management of the switch, and understand the basic commands of the switch configuration.Experimental background : A company has a new ba

How to identify a layer-3 switch or a layer-2 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

Using the Soho router to implement a port-based VLAN Communication _ switch for Layer two switches

1. Background Generally implement VLAN communication, or use a three-tier switch, or a single arm routing, both of which are very expensive, so when there is the need for VLAN communication, and the data volume of the VLAN communication is not very large, with 50 of Soho route to build a network is very affordable. My original demand is this:With an n-port two-layer

Two Layer-2 port security is used to prevent long-distance optical fiber lines from being connected to two layer-3 switches.

I. Overview:On the forum, I saw someone asking how to prevent long-distance fiber lines from being eavesdropped or connected to other illegal switches. If they are the same, port security is used to prevent random access, log on to the rack to perform the test and record the test results. Forum question link: Workshop.Ii. Basic Ideas:A. assume that the vswitch is a layer-3 vswitch B. if the two switches are

Server Load balancer principles and practices 16th Server Load balancer Network Design regards Server Load balancer as a layer-2 switch or a layer-3 Router

layer-2 switch or a layer-3 Router The basic function of a vswitch is to receive data packets on the receiving port, select the output port, and send the data packets. How to select an output

85, switch security MAC Layer attack configuration experiment port-security

violation protectSwitchport port-security mac-address AAAA.BBBB.CCCCTest connectivity again650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/79/84/wKiom1aTZKvSWuVWAAAfdSm1WZU460.png "title=" m4.png "alt=" Wkiom1atzkvswuvwaaafdsm1wzu460.png "/>650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M02/79/84/wKiom1aTZMqxOHaiAABEZSKIQJM171.png "title=" m5.png "alt=" Wkiom1atzmqxohaiaabezskiqjm171.png "/> You can also set the maximum number of M

CISCO switch VLAN Configuration Guide (2)

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'

(iv) Cisco DHCP snooping instance 2-multi-switch environment (DHCP server and DHCP client in different VLANs)

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)

Layer-2 switch network administrators do not know the basic knowledge

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

Chapter 2 use a layer-3 Switch to configure a lan for inter-VLAN Routing

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

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