that the admin domain is able to overwrite all branch switches.
The Cisco switch is capable of supporting any media as a trunk, and it can use its own ISL tags for relaying. ISL (Inter-Switch link) is a protocol between switches, between switches and routers, and between switches and servers to transfer multiple VLAN information and VLAN data streams, configure
Pen name is also large, commonly known as the small gameRecently work has become a little different, received their own network engineers exam is almost 2 doors are nearly point on the heart has a lot of depressed and lost, may be doomed to let me have a good reflection on it, for this today self-study review of the past Cisco Cisco Simple Foundation.Cisco commands and H3C are far apart, recalling that
Cisco switch password settings www.2cto.com 1. set console password> enable # configure trminal (confing) # line console 0 secure console port ① (config-line) # password (cisco) Secure password (config-line) # login logs must not be small. console Password settings complete exit 2: set the global password www.2cto.com enadle # configure terminal ② (config) # enab
High intelligence, high availability, and high reliability are the characteristics of multi-layer intelligent optical fiber switch. Although its technology is not very mature yet, it has been recognized by people. Cisco Systems recently announced that it will launch the CiscoMDS9100 series of multi-layer smart Optical Fiber switches this fall to meet the needs of small and medium-sized enterprises for deplo
Recently, the OS of a vswitch is old, so I want to update it. I want to ask a user to update the OS. After updating the OS, the problem occurs, I have a password for the OS. Since the password is being used and it is difficult for them to ask for it, I am ready to clear the password. After finding the relevant article on www.cisco.com, cleared successfully. Write down the cleanup process.
Let's talk about the configuration environment first, the
CISCO 3750 Dual Switch stack operation, cisco3750 dual
Double switch stack operation
I. Basic Requirements:
The ios version must be consistent with the dedicated stack module and stack cable, and the maximum number of stacks is 9.
Ii. Stack advantages:
High-density ports, easy to manage, and stacked switches can be regarded as a unified
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
Lab Environment:650) this.width=650; "alt=" Cisco Packet Tracer three-layer switch interrupt Dhcp-ibm.chick-mingkang.zhou "src=" http://img0.ph.126.net/4fx 93s0ahtpaead19pxmyg==/6619563575538146055.jpg "style=" border:0px;height:auto;margin:0px 10px 0px 0px; "/>Experimental Purpose:1, the VLAN is divided on the three layer switching: vlan10\vlan100\vlan200, and the IP is specified as: 192.168.10.254\ 192.16
-11.binBut Cisco low-endSwitchRomm Mode (Cisco Low-endSwitchRomm mode prompt for switch:) No Confreg command, what to do? Without this command does not mean that it can not modify the serial port rate, using the following command: (note case)Switch:set BAUD 115200Switch:reset (restart)This is changed, but the Romm mode of the low-end
packet of a data stream, the layer-3 engine processes the hardware switching component to provide a route for subsequent data packets. Generates MLS entry records and routes are exchanged multiple times at a time.
2> MLS Based on CEF (Cisco Express Forwarding)
CEF is a topology-based forwarding model. It adds all routing information to the forwarding information database (FIB) in advance to facilitate fast routing. Basic concepts include:
Forwarding
through the Console port.The method for configuring through a Web browser is as follows:Step 2: connect the computer to a common port of the switch and run the Web browser on the computer. In the address field of the browser, type the IP address of the managed switch, for example, 61.159.62.182) or the specified name. Click Enter. the dialog box 10 is displayed.
650) this. width = 650; "src =" 51cto.com
Catalyst 2900xl/3500xl/2950 Series switch Port listening configuration
The following command configures Port sniffing:
Port Monitor
For example, F0/1 and F0/2, F0/2 are VLAN1,F0/1 listening F0/2, F0/2 ports:
Interface FASTETHERNET0/1
Port Monitor FASTETHERNET0/2
Port Monitor FASTETHERNET0/5
Port Monitor VLAN1
2. Catalyst 4000,5000,and 6000 Series
interruptRommon 1 > "Interrupt"2.2go in Rommon mode start using the command configuration as follows Step:Rommon 1 > Confreg Choose y or N below the word bad I'll tell Y or N in the order of choice. Excuse me. The order is as follows: 1. Y 2.N 3.N 4.N 5.N 6.N 7.Y 8.N 9.N 10.N650) this.width=650; "style=" Float:none; "title=" 123.png "src=" http://s3.51cto.com/wyfs02/M02/71/37/ Wkiom1xjr8dtoehaaagcy3dy9aw290.jpg "alt=" Wkiom1xjr8dtoehaaagcy3dy9aw290.j
, and the slot number is different)
Iii. Stack instances:
1: The stacked cables are physically connected. The connection method is master stack1, which is connected to slave stack2.
2: enable the master without any configuration. .
3: Server Load balancer is enabled.
4: No configuration is required. Line plug, automatic stacking election upon startup, master is highlighted)
Note: You can also configure stac
The backboard bandwidth is the maximum amount of data that can be transferred between the vswitch interface processor or interface card and the 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.
However, how can we check whether the bandwidth of A vswitch is sufficient? Obviously, the estimation method is useless. I think we should consider the following two aspects:
1) The sum of the total port capacity
switches in the network receive all the BPDUs and compare them, you can choose the only one root bridgeConvergence of STP5 STP states for switch portsStatus useForwarding (Forwarding) sending/receiving user dataLearning (learning) Building Bridge tablesListen (Listening) build an ' active ' topologyBlocking (Blocking) receives only BPDUsDisable (Disabled) Force shutdown3 Types of Timers for STPHello time: The time interval between network Bridge send
The combination of Huawei S2000-HI switch and cisco acs for certificationCase: Huawei S2000-HI switch and cisco acs combined certification I. Networking requirements: a company's internal network adopts unified management, send the authentication tasks for accounts and passwords of all devices to the Radius server (ACS
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