Whether it's on a Cisco router or a network device such as a Cisco switch, the standard ACL access control list is always unable to match both the traffic source address and the destination address, nor does it meet the requirements of the "granular" control of the current network world, such as: A service function that allows access to a server, However, pinging
One outlet had poor contact. Because there was no wiring module, I just fixed the wiring block and the network was ready for use. After a week, the network was broken again and I asked another colleague to change the wiring module, as a result, my colleague told me that changing the wiring module would not work, and the network would still be disconnected. I thought it was strange. I told him that the Network was originally accessible, but the wiring module was not good.
I will remove the wiring
1). Configure the VLAN Port Number of the switch named Switch1 as follows:
Switch1(config)#int e0/2Switch1(config-if)#vlan-membership static 2Switch1(config-if)#int e0/3Switch1(config-if)#vlan-membership static 2Switch1(config-if)#int e0/4Switch1(config-if)#vlan-membership static 2……Switch1(config-if)#int e0/20Switch(config-if)#vlan-membership static 3Switch1(config-if)#int e0/21Switch1(config-if)#
Configuration of a layer-3 Cisco switch 1. Start a route on a layer-3 switch. Otherwise, layer-3 switch does not have the routing function switch (config) # ip routing2. Configure the VLAN ip address
want to initialize the switch, you need to enter the Privileged EXEC mode. Enter setup in the command prompt symbol to start the initialization operation.The Privileged EXEC mode is introduced just now. In this case, we need to talk about several modes of machine change. Different modes can execute different operation commands. First, we need to talk about two basic modes.For the sake of security, CISCO di
I. Configure the environment
Centos 6.2 system. Link aggregation is performed on one and two NICs. The vswitch has six or seven Network Ports.
Ii. server operation steps
1. Create a channel Bonding Interface
# Vi/etc/sysconfig/network-scripts/ifcfg-bond0Add the following lines:Gateway = 192.168.10.1dns1 = 202.106.0.20device = bond0bootproto = nonenetmask = 255.255.255.0type = ethernetipaddr = 192.168.10.100
Topology map:
1. Configure the router R4 as a Frame relay switch
Frame-relay switching * configured as Frame Relay switch
2. Configure the interface's clock frequency, package type, LMI type and Frame Relay DCE on the router R4
int s0/0
No shut
Clock rate 64000 * Set clock frequency
Encapsulation Frame-rel
Encapsulation Frame-relay boot Frame Relay Package
Encapsulation Novell-ether rules the Novell unique format used on the network segment
Encapsulation PPP set PPP to the encapsulation method used by the serial port or ISDN interface
Encapsulation SAP rules the Ethernet 802.2 format used on the network segment the Cisco password is SAP
End Exit Configuration mode
Erase Remove flash memory or configure
, the first file is not the correct iOS file, the second is the correct iOS file. It's a lot easier.
Set the startup mode to 2 with the Confreg command, and then manually boot from the correct iOS:
Rommon 2 >boot Bootflash:cat4000-is-mz.121-11b.ew
Rommon reg:0x30004180
Running diags ...
...
When the boot is finished, enter the iOS interface and modify the startup parameters:
Switch>enable
Switch#dir
I am eager for the first time to switch between vlan routing and nat addresses of Cisco switches. I am very energetic and have an undefeated spirit. I am ready to continue to answer questions during multiple rounds of interviews. My little brother squashed his eyes and took out the bottom of the press box: If my company has two Internet interfaces, A and B, respectively. The following vswitch divides multip
When configuring the Cisco 3560 switch in the morning with the Cisco Packet Tracer practice, it is found that the IP address of the port cannot be configured in port configuration mode.Switch>Switch>enableSwitch#configure TerminalSwitch (config) #interface F0/1Switch (config
"hard" operations on network devices. The security factor is high, but the obtained information is not accurate. For example, if the IP address of a server has been changed, we can think that the server is not connected to the network because the original IP address cannot be found on the switch. The system administrator first checks the IP address information on the server, and then finds out which port of the s
Use a cisco router to simulate how to configure a frame relay switch (configure 3640 as a frame relay switch): 3640 (config) # frame-relay switching ---------------------- enable the frame relay switching function of the router 3640 (config) # int s0/0 ----------------------
Upgrade object: WS-C3750-24TS-E Ingredients: Cisco TFTP server, one cable (connecting hosts and switches), my ThinkPad Local Area Connection: 2.2.2.1 3750-vlan 1:2.2.2.2 Telnet to the switch for configuration 1. Setting up a TFTP server Close other network connections on the host to ensure that the TFTP server address is a locally attached IP (2.2.2.1). Copy the new iOS to the TFTP server root directory.
and get connected to the switch IP address6. Enter the access layer switchRun the box "Telnet 192.168.66.1";Show mac address-table dynamic address 3w45.65e3.8866 get port numberShow mac address-table Dynamic interface Gi2/0/17 detail get only one piece of information that proves that the MAC address is on this switch, if not repeat steps 4, 57, first introduced
Lab Environment:650) this.width=650; "alt=" Cisco Packet Tracert three-tier switch VLAN configuration-Ibm.chick-mingkang.zhou "src=" Http://img2.ph.126.net/2N Qfixjyba1gdiqtbuknhq==/6630601572768576164.png "style=" border:0px;height:auto;margin:0px 10px 0px 0px; "/>Experimental Purpose:1, the three layer switch divides three VLANs, is Vlan2\vnal3\vlan4, and the V
users cannot view any important information.
Privileged Mode
The administrator can view and change the configuration in this mode. I believe that it is absolutely important to have a set of passwords at this level. To switch from user mode to privileged mode, the administrator needs to enter the enabel command and press the Enter key:
Router> enableRouter#
Global Configuration Mode
In privileged mode, we can now access global configura
9148 Common configuration of fiber switchesSwitch Basic configuration1. Configure the switch nameswitch# Config TerminelSwitch (config) # switchname SwitchA2. Configure the management IP address of the switchSwitch (config) #Switch (config) # interface Mgmt 0Switch (config-if) # IP adress 192.168.100.10 255.255.255.0Sw
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