): can only receive or send bpdus messages
learning (learning) : can receive or send BPDU Message, and form mac
forwarding (Forwarding) : can receive or send BPDU Message, and form mac Address table, send and receive data frames simultaneously
STP Convergence: All ports on the switch are converted to forwarding or blocking mode, which takes 50 seconds by default. The
There was just one Cisco 2960 switch that failed this afternoon, replacing an alternate switch immediately, but the backup switch was transferred back from another branch and the password was forgotten. Just use the recovery password process, also share it.1. Set the Windows HyperTerminal, name customization. Recommend
CISCO has become a leader in the switch industry, so I have studied the comprehensive performance of CISCO switch 2950. I would like to share it with you here, hoping it will be useful to you. Fixed installation of wire speed fast Ethernet desktop CISCO
Tags: Cisco switchBasic configuration and management of switches• Technical Principles• The switch is managed in two basic ways: in-band management and out-of-band management.• The console port management switch through the switch is out-of-band management, which does not occupy the network port of the
)
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Add Catalyst 5002 to the domain
You need to add Catalyst 5002 To The VTP management domain named cisco and set it to VTP client. It will receive VTP configurations and updates from the VTP server.
Note: by default, the Catalyst 5000 series switches are VTP servers.
Cat5002> (enable)
Cat5002> set vtp domain cisco mode client
T
Tags: Cisco MDS zone san Configure a Cisco MDS Optical Fiber storage switch (MDS multilayer Director Switch multi-layer optical fiber array switch)General process: 1: Create a vsan, add the port to vsan2: create a zone, add the port to zone3: Create a zoneset, add the zon
Basic configuration and management of the Cisco PT Simulation Experiment (1) switchExperimental 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 p
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 switch
Cisco Catalyst Switch configuration and maintenance method. Today's Catalyst Switch topic discusses the introduction of the History st6000 series and the introduction of the Catalyst Switch 5000 Series. There is no difficulty. Hurry into the Wireless World.
LAN switches have evolved from a HUB-based LAN shared in the t
with option 82 from the L2 switch and establish binding entries for the information . Of course, if you encounter the switch does not support IP DHCP snooping information option allow-untrusted command can have the following two solutions:① using the IP DHCP relay information trusted(in-VLAN) command within an int VLAN of an unsupported switch② on the access l
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
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
asked the boss, and he did not know it. It is said that the password was changed by the supplier. So the phone supplier asked the password for a long time and got a reply: at that time, the changed employee quit, and now he does not know the password .... dizzy .. too irresponsible .. there is no way to ask for your own, for your own, for google... (Although I have learned how to restore the password of a Cisco router before, but the vswitch and vro
In Cisco networks, there are four main types of interfaces in the final stable state of a switch in a LAN: Access/trunk/multi/dot1q-tunnel.1, Access: Mainly used to access terminal equipment, such as PC, server, print server and so on.2, Trunk: Mainly used to connect other switches, in order to host multiple VLANs on the line.3. Multi: Hosts multiple VLANs in one line, but unlike trunks, it does not label t
-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
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-relay * Encapsulated as Frame Relay
Frame-relay lmi-type
management domain named cisco and set it to VTP client. It will receive VTP configurations and updates from the VTP server.Note: by default, the Catalyst 5000 series switches are VTP servers.Cat5002> (enable)Cat5002> set vtp domain cisco mode clientTrunk ports)VLAN Trunk protocol (VTP) is transmitted only on the Trunk port (ISL, LANE, and 802.10) and should be transmitted on two Trunk st5000Which port is d
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 configuration of a
, 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 stacks first, such as IP addresses and priorities.
4. Check the current stack status:
Show pla
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