cisco refurbished 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 batch of two-layer switch, before formally put into use to initialize the configuration and management, in order to maintain later.Technical Principle : There are two basic ways

Yesterday the company bought a few Sonos wireless hifi equipment, beans need to test the effect.As a simple test, my structure is very simple, the router (firewall) comes out to pick up the Cisco switch, then boost and my controller (computer or phone) are on a VLAN, and then between boost and player through the grid wireless network connection between themselves.Routers-Switches-SONOS boost/controller-----

(VLAN) #exitSwitch #showvtp status//viewing VTP configuration information switch#show vlanbrief// Display VLAN configuration information switch#conftswitch (config) #inter f0/1switch (config-if) #switchport accessvlan The 2//divides the port into Vlan2switch (config-if) #exitSwitch (config ) #inter f0/2switch (config-if) #switchport NBSP;ACCessvlan3//divide the port into Vlan3switch (config-if) # Exitswitch (config) #inter f0/24switch (config-if) #switch modetrunk //Configure the port as Trunk

How do I make a QoS-limiting configuration under the Cisco switch? How to limit BT downloads? This blog will be detailed with examples. Example 1: QoS speed limits on Cisco switches For the switch on the user's bandwidth control, the switch is usually 10/100/1000, three kinds of speed, for other rates need to carry out the speed limit of QoS, you can also limit

Basic configuration and management of switches in Cisco PT simulation experiment, ciscopt Basic configuration and management of switches in Cisco PT Simulation Experiment Objective: To understand the basic configurations and management of a vswitch and the basic commands of the vswitch configuration. Tutorial Backgroun

1. Set host name/system name on iOS based switch: Switch (config) # hostname hostname To set the hostname/system name on a CLI-based switch: Switch (enable) set system name name-string 2. Set the login password on the iOS based switch: Switch (config) # Enable password Level 1 password To set the logon password on a CLI-based switch: Switch (enable) Set password Switch (enable) Set Enalbepass 3. Set up remote access on iOS-based switches: Sw

Q: Are there any simple tools and methods? Run the script automatically on N or so cisco switches according to the script, and then return the result?Method 1: Download and modify the vswitch configuration file and upload it to N vswitches. Restart or copy start run.Method 2: Create a bat file under windows. The content in the file is the same as the command you used to telnet to the vswitch for modificatio

obsoleteAA0001 DEC obsoleteAA0002 DEC obsoleteAA0003 DEC Global physical address for some DEC machinesAA0004 DEC Local logical address for systems running DECNET 2. the preset recovery time of the Cisco switch port is about 30 seconds. That is, unplug the network cable and plug it in. It takes about 30 seconds for the indicator to change from yellow to green. Generally, the switch only t

#!/usr/bin/python36#-*-Coding:utf-8-*-Import NetmikoFrom Netmiko import Connecthandler#Netmiko ExampleIOSV_L2_S5 = {' Device_type ': ' Cisco_ios ',' IP ': ' 192.168.122.75 ',' username ': ' Cisco ',' Password ': ' Cisco '' Secret ': ' Cisco '}With open (' Iosv_l2_config ') as F:lines = F.read (). Splitlines ()Print (lines)All_devices = [IOSV_L2_S5]For Devices in

that your server operations are too slow. Check your desktop traffic speed and network switching capability. Question 4: Maybe tomorrow, the business will double, and the demand for various network applications will double. Are you ready for the network? Simplifying management and reducing costs are the pursuit of network managers. The network environment is a complex and closely composed environment, and you will find that the network is becoming more and more picky. Remember, the network has

C-F6. Multi-VLAN configuration DHCP? C3750-E? CISCO switches, c-f6c3750-e C-F6. Multi-VLAN configuration DHCP? C3750-E? CISCO switches. After VLAN and interface are allocated according to our plan, we need to consider which VLANs need to be configured with the DHCP service. There may be multiple VLANs that need to be c

Startup Process of cisco routers and switches: I. cisco switch startup process: The START loader is a small program stored in NVRAM and executed when the switch is started for the first time. ① The vswitch loads the loader software from NVRAM. ② Start the loader. ③ Perform POST (self-check on startup) for the low-level CPU subsystem ). ④ Initialize the Fl

Today just to restore a Cisco configuration commands, this belongs to my professional small caught dead a back, I hope you forgive!Tools/Materials Cisco series switching Method/Step 1First backup of previous configuration informationCopy Flash:config.text Config.old 2Clear Switch Configuration command: Write eraseOf course, you can also use erase startup-config to achieve clear

Ciscolib is an open-source third-party Python module on git that manages Cisco switches. Only simple Telnet management is supported at this time. The management method is very simple, the module source code itself is not complex. It is helpful for daily batch configuration.The module structure is:Official Operating Example:Import ciscolib switch = Ciscolib. Device ("hostname or IP", "Login password", "Optio

Password recovery for Cisco Catalyst 2950 Switches1. Unplug the power cord from the switch.2. Press and hold the switch's mode key to plug in the power cord.3. When "Switch:" appears, release mode switch:4. After the SWITCH: Execute the "flash_init" command, initialize the Switch:flash_init5. View the files in Flash. Switch:dir Flash6. Rename "Config.text" file to "Config.old" file. Switch:rename Flash:config.text Flash:config.old7. Execute the "boot"

When switching data frames, a switch can select different modes to meet network and user needs. Cisco switches provide three switching modes: Storage forwarding Mode The Store-and-forward mode means that the switch can complete the entire data frame and perform the forwarding operation only after the CRC verification is passed. If CRC verification fails, that is, the data frame is incorrect, the switch d

and security level. Therefore, the network design should prevent abnormal function faults caused by excessive broadcast traffic, and pay attention to the potential security risks. In short, if an exception occurs in the network, the abnormal device will send a large amount of broadcast packet traffic. If too many broadcast datagram traffic occurs within one second, the CPU usage of network devices such as switches is high, and the Set utilization rat

The built-in tool "HyperTerminal" can be used directly under XP, and installation SECURECRT need to be downloaded in Win7 or later.This article assumes that the SECURECRT has been downloaded and installed.First, connect your computer to the console line. Because many laptops do not have a serial port configured at present, the console line is now connected to a serial port to the USB port line, and then via USB to connect the laptop USB port.So is my computer.Find the port numberRight-click on t

First look at the requirements: (to make the following effect)Take a look at the overall topology diagram:put a Laptop : L0DHCP automatically get IPput a server-pt : DHCP ServerSet IPSet Config inside the DHCPGateway (first routed address IP )Dns Serverput a switch: sw0(No configuration required, just a function of the expansion port)Place several routers: R0 , R1 , R2,dte , DCEconfigure each port's IP Address requirements:The connection is ensured by means of seriesTwo cases need to expand the

unassigned YES unset up downFASTETHERNET1/12 unassigned YES unset up downFASTETHERNET1/13 unassigned YES unset up downFASTETHERNET1/14 unassigned YES unset up downFASTETHERNET1/15 unassigned YES unset up downVlan1 unassigned YES unset up downVlan10 192.168.10.1 YES Manual upVlan20 192.168.20.1 YES Manual upsw1#650) this.width=650; "src=" Https://s3.51cto.com/wyfs02/M00/08/82/wKiom1njV3KCWsVAAAAp30tzTpQ385.png "style=" float : Left; "title=" QQ picture 20171015203147.png "alt=" Wkiom1njv3kcwsvaa