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The customer reported repair for network faults caused by the switch's short connection, and the network was suddenly paralyzed. Some computers could not access the Internet, and it was determined that a switch was closed, so they had to fix the

Cisco switch port link type description: vlan description 1. an Access port can only belong to one VLAN and is generally used to connect to a computer. 2. A Trunk port can belong to multiple VLANs and can receive and send packets from multiple VLANs.

Use TFTP to back up switch configuration information before using commands to maintain network equipment and modify the configuration file, you should first back up the configuration information of the device, this is very important because tftp

Analysis of the working principles of bridges and L2 switches-video notes: the working principles of bridges (L2 switches) and security threat hubs are rarely used. Pay attention to the knowledge of bridges. The characteristics of a bridge and a

Using the raw socket to measure the forwarding table capacity of the link layer switch using the original socket, we can build data frames in the network according to our own ideas. Because it is for the Ethernet frame at the link layer, we do not

Cisco initial learning 1 switch command Daquan 1. Global configuration mode Enable Configure terminal 2. Privileged mode Enable 3. interface Configuration Mode interface VLAN1 4. console line configuration mode line console 0 5. View vro ip Address

Port-channel experiment and TestWhen two switches use layer-3 + layer-2 for connection interruption, there will be about 10 seconds for reconnection. It is best to specify the protocol and initiative when creating a PORT-CHANNEL. In interface mode,

  Lab procedure] Switch 1 Switch> enableSwitch # configure terminalSwitch (config) # interface fastEthernet 0/1Switch (config-if-range) # switchport port-security maximum 1 (configure the maximum number of connections on the port to 1)Switch (config-

CISCO 2918 vswitch password cracking method1. Connect the console port of the vswitch to the terminal or PC Super Terminal.2. Press and hold the mode key on the switch, and then turn on the power supply.3. initialize FlashSwitch: Flash_init4. Rename

If you are still using Huawei's HW-RouteSim to simulate H3C routers and switches, we recommend using H3C simulation software (H3C-simware ), similar to the system software used by H3C products, it can simulate all routes and exchange commands of H3C

Hubs, switches, and routers, which are known as network hardware, have always been active in the network field. However, many cainiao who are new to the network are annoyed by the fact that, they are not only similar in appearance, but also often

There are three switch modes: storage forwarding, fast forwarding, and segmented forwarding.1. CSMA/CD (Multi-Channel Access for carrier listeners with conflict detection)Working principle: Listen to whether the channel is idle before sending. If it

language-mode?Chinese environmentEnglish English environment system-view[Quidway] sysname?TEXT Host name (1 to 30 characters) Display history commands display history-command displays the historical commands you have typed # Go To The System View.

Requirements: Beijing headquarters: 1. The core layer (Core1 and Core2) and the aggregation layer (Cds-1, Cds-2, Cds-3 and Cds-4) use the ospf routing protocol. 2. link binding between core layer Core1 and Core2, link binding between the aggregation

  In general, there are several VLAN users in the network and three egress ports. Set a policy route on the core switch so that the core switch will decide to drop the database to one of the three egress based on the pre-configured ACL stream

Today, I suddenly thought of this question. How can I use a vro as a switch. Well, my own practice has proved that a vro can indeed be used as a vswitch. Environment Description: I tested it in a LAN. If you are using dial-up Internet access in your

1. system-view enters the system view mode. 2. sysname: Device Name 3. display current-configuration current configuration 4. language-mode Chinese | switch between English and Chinese 5. Enter the Ethernet port view through interface Ethernet 1/0/1 

HUB: The entire HUB is a conflicting domain. The CSMA/CD mechanism is used to detect and listen. packets from a port are forwarded to all other ports without analysis, devices connected to the HUB share bandwidth, which has low utilization, low

How to Implement the DAI function of the CISCO switch: 1. To prevent ARP spoofing, you need to establish a trusted, real, and secure ARP cache database, this database can be obtained through DHCP detection or statically bound. 2. ARP responses from

The Cisco switch is set to prohibit unauthorized access to 802.1x (config) # aaa new-model 'to start AAA. (Config) # radius-server host 192.168.1.100 key netdigedu 'configure the address and key of the RADIUS server. (Config) # aaa authentication