cisco 2950 switch

Lab Environment:The company has a Cisco switch that forgets the login password and cannot enter into privileged mode.Implementation features:To modify the login password in privileged mode1, desktop----start----All Programs----attachments----hyperterminal----files----New Connection---CustomThe name test----OK.2. The COM1 (depending on the actual situation) used in the connection is----determined.3, Rate: 96

Cisco switch Basic configuration: Console Port connectionUser mode hostname#;Privileged mode hostname (config) #;Global configuration mode hostname (CONFIG-IF) #;Switch Password settings:switchgt;enable; Enter privileged modeSwitch#config terminal; Go to global configuration modeSwitch (config) #hostname Csico; Set the host name of the switchSwitch (config) #enab

Switch configuration command base user mode hostname#; Switch Configuration Command Basics User mode hostname#; Privileged mode hostname (config) #; Global configuration mode hostname (CONFIG-IF) #; Switch Password settings: Switch Basic configuration Includes VLAN creation, deletion, setting of port propertie

If the switch login password is forgotten, don't worry, as long as you have a PC, there are similar HyperTerminal (Hyper Terminal) This is a terminal program, connected to the switch console port, then the password recovery is n simple. 1. For the Catalyst 2900/3500XL series: Disconnect the power cable from the switch, and then press and hold the

message are correctIf a large number of messages are sent, the network bandwidth will be exhausted to form another Denial-of-Service attack.3. The client can specify the IP address at will.The client does not have to use the DHCP service. It can set IP addresses in a static way. If any,This will greatly increase the possibility of network IP address conflict.II. Introduction to DHCP Snooping TechnologyDHCP Snooping is a DHCP security feature. Cisco s

Cisco switch snmp setting commandCisco switch snmp setting command (from Cisco switch command list)94. set snmp Command Options: set snmp community {read-only | ready-write | read-write-all} [community_string]95. set snmp trap Command Format:Set snmp trap {enable | disable}

Cisco L3 switch Policy Routing for network access and Traffic DistributionI. Description of the solution environment 1. There are two groups of Group1 and Group2 in the environment, respectively, to access the Internet from two different network outlets. 2. The core network is a Cisco 3560G layer-3 Switch with four VLA

When I got up this morning to go to the forum, I saw a post. Ask how to solve the following problem? A Cisco three-tier switch divides 3 VLANsVLAN 2:IP 192.168.1.1 255.255.255.0 192.168.1.254 Network SegmentVLAN 3:IP 192.168.2.1 255.255.255.0 192.168.2.254VLAN 4 IP 192.168.3.1 255.255.255.0 192.168.3.254Each VLAN can communicate with each other.Now add 1 Cisco r

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' vlan name ', the following code configures VL

templateHOST_NAME h17_2960sw1_3.251Service_description CHECK_TRAFFICE_G1/0/28Check_command check_switch_traffic!10128!200!400!500!800}Define Service{Use GENERIC-SERVICE,SRV-PNP; Inherit values from a templateHOST_NAME h18_2960sw1_3.247Service_description CHECK_TRAFFICE_G1/0/28Check_command check_switch_traffic!10128!200!400!500!800}6. Configure permissions (pending validation)[Email protected] ~]# chmod 777/var/tmp/check_traffic_10.10.3.249_10128.hist_dat_root__647. Restart the Nagios service[E

timeoutSwitch (config) # line consoleSwitch (config-console) # Exec-timeout 60Switch (config) # line vtySwitch (config-line) # Exec-timeout 603. Installation and removal licenseswitch# Install license Bootflash:license-fileswitch# Clear License License-fileswitch# Clear License All4. Disable and enable Telnet and SSHswitch# Config TSwitch (config) # no Telnet server enableSwitch (config) # Telnet Server enableswitch# Config TSwitch (config) # SSH server enableSwitch (config) # no SSH server ena

#!/usr/bin/pythonImport SysImport timeImport OSImport Pexpectnow = Time.strftime ('%y-%m-%d ', Time.localtime (Time.time ()))AA = open ('/home/hanlei/test/%s/log.txt '% now, "W")Fout = open ('/home/hanlei/test/%s/log.txt '% now, "W")IP = open ('/home/hanlei/test/switch_ip ', ' R ')PASS = open ('/home/hanlei/test/switch_passwd ', ' R ')While 1:Readip = Ip.readline ()Readpass = Pass.readline ()If not READIP:print ' END 'BreakFoo = pexpect.spawn (' telnet%s '% Readip)Foo.log_file = FoutFoo.expect (

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)

Cisco switch Product Name Description Catalyst nn xx [-C] [-M] [-A/-EN] NN is the serial number of the switch XX for A fixed configuration switch is the number of ports, for A modular switch, the number of slots C indicates that the fiber-optic interface M indicates that the

Calculate the bandwidth of the backboard of a Cisco switch. It is the maximum amount of data that can be transferred between the vswitch interface processor, interface card, and data bus. The higher the bandwidth of the backboard of A vswitch, the stronger the ability to process data, but the design cost will also rise. Www.2cto.com but how can we check whether the bandwidth of A vswitch is sufficient? Obvi

650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M02/83/64/wKiom1dyIb_TaRePAAA777AJy9A401.png "title=" capture. PNG "alt=" Wkiom1dyib_tarepaaa777ajy9a401.png "/>650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M02/83/64/wKioL1dyIn7BFKD0AAAcv_9NA24860.png "title=" 1.PNG " alt= "Wkiol1dyin7bfkd0aaacv_9na24860.png"/>In fact, the equipment on the network to prevent a single line failure caused local paralysis, the normal structure is set back to the road network, which is physically prov

We have explained a lot about the configurations of CISCO switches. Here we will mainly explain the port security configurations of CISCO 3550 switches. Scenario: There is a CISCO3550 switch in a certain unit. For the sake of network security, the security requirements for some ports are high, that is, only the specified host can be connected, for example, if you

Microsoft's Windows Server 2012 has been able to support LACP link aggregation, due to the use of link aggregation can achieve line redundancy and bandwidth increase, here I used a Cisco 2960 to do a test for interested friends reference.Experiment Preparation:Cisco switch 29,601, install server 2012 servers, there are two Gigabit network card, network cable two root.Steps:1. Configuration of

Simply record that a Cisco router is simulated as a frame relay switch, and the router must have a serial interface module. Liehuo.net // Enable Frame Relay switching on the vroFRSW (config) # frame-relay switching strong-fire-network // Enter the Interface Configuration ModeFRSW (config) # int serial 0/1 Veryhuo.com // Delete the interface IP AddressFRSW (config-if) # no ip address veryhuo.com // Co

The great god of you;I now have a Cisco boot from the 507R-E switch to report the following errors please advise.Checking the partition table and boot sector ...Checking FAT, Files and directories ...Reclaiming unused space ...Updating FAT ...Rom Monitor Program Version 12.2 (44R) SG5CPU rev:2.1, Board rev:8, Board type:103, CPLD nexu Rev:9Chassis:ws-c4507r-eFront Panel Phy is bcm5482sGot Mac ADDRESS:00:25: