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
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
Note: The vlan number of a vswitch starts from VLAN 2 because the vswitch has a default VLAN, namely VLAN 1, which includes all users connected to the vswitch.
The VLAN configuration process is actually very simple. Only two steps are required: 1) name each VLAN group; 2) map the corresponding VLAN to the corresponding switch port.
The specific configuration process is as follows:
Step 2: Set the Super Term
The port rate between switches and switches, between switches and routers, does not meet the actual rate and requires tying more than two ports together to load balance and prevent single points of failure.1. Select Switch SW2960 to configure the F0/1 and F0/2 port modes to truck#conf Terminal into privileged mode#interface Range Fa0/1–2 used to bind a set of ports and enter the port batch configuration vi
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
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
It is very important to know more about the configuration of Cisco routers. Here we mainly analyze the configuration steps of Cisco routers, have you ever encountered this problem: Because you forgot your password, you were forced to reject the original friendly "friend"-A vro or vswitch, and you were unable to reset parameters and collect statistics. The followi
Cisco network Device interface is mainly divided into the following modes:1. Switchport mode access: Forces the interface to become an access interface and can actively negotiate with the other person to entice the other person into Access mode.2, Switchport mode dynamic desirable: active and to negotiate the possibility of becoming trunk interface, if the Neighbor interface mode is one of Trunk/desirable/auto, then the interface will become the trun
, IOS version: 132) JA
Authentication Server: Windows 2003 Enterprise Server with SP1, installed with the IAS service.
Client: Windows XP with SP2. the Wireless network card is Intel PRO Wireless LAN 2100 3B Mini PCI Adapter.
Cisco Wireless AP Configuration:
Locate IP Address: Cisco Wireless AP obtains the IP address through DHCP by default. Therefore, if you have a DHCP server in your network, first query
-sa4 drwx 3776 Mar 1993 01:23:24 HTML66-rwx 1970 00:01:19 Env_vars68-rwx 1296 Mar 1993 06:55:51 Config.text 1728000 Bytes Total (456704 bytes free)6, switch>rename flash:config.text flash:config.old 7. switch>BootAfter renaming the configuration file, type the boot boot device under Switch>, and when the system starts to set, press N and when the setting is compl
, 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
Switches: Cisco2960, Cisco g3560xserver: 10.15.44.164 ac-*-2d-* -84-*pc:10.15.44.69Server 44.164→port 2-Cisco2960-port1→g3560x-port5Find this IP by IP address under the interface of that switchQuery the corresponding switch port via Mac, IP address1. Start running nbtstat–a IP query out MAC address650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/7C/ED/wKioL1bcv2eQDm6GAAAY8Id21zc609.png "title=" Qq
-K9, IOS version: 132) JA
Authentication Server: Windows 2003 Enterprise Server with SP1, installed with the IAS service.
Client: Windows XP with SP2. the Wireless network card is Intel PRO Wireless LAN 2100 3B Mini PCI Adapter.
Cisco Wireless AP Configuration:
Locate IP Address: Cisco Wireless AP obtains the IP address through DHCP by default. Therefore, if you have a DHCP server in your network, first qu
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
Overview of LAN switches
LAN switches have evolved from a HUB-based LAN shared in the traditional sense to a broader space. Take Cisco's Catalyst 5000 Series LAN switch as an example. It includes an integrated switching hardware structure, 10-Mbps Ethernet that supports switching, and-Mbps Fast Ethernet, supports fast Ethernet, FDDI, exchange-type ring, and layer-3 switching processing. This type of switch
The question about the Cisco router interface is described in the following four steps. Based on the demonstration in the image, I believe that we should be able to clearly understand the question about the interface. You can configure a serial interface through a virtual terminal. to configure a serial interface, foll
domain COM settings vtp admin domain name com
PAR2 (VLAN) #vtp client to set the switch to clients mode
Par3#vlan database into VLAN configuration mode
PAR3 (VLAN) #vtp domain COM settings vtp admin domain name com
PAR3 (VLAN) #vtp client to set the switch to clients mode
Note: Setting the switch to server mode is to allow the creation, modification, deleti
binding entries on L3, and no There is a binding entry for Win11 . If you deploy dai,ipsg at this time , because the L2 switch does not support these two features, for L3 switches, the data coming from the L2 switch can be compromised by IP spoofing and ARP spoofing. On the other hand, because the L3 switch does not have PC2 bindingsentries, and Dai and IPSG mus
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