cisco switch cable

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

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

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 view Figure#switchport mode truck will figure p

Cisco Catalyst 6500 Series Switch Denial of Service Vulnerability (CVE-2015-0771)Cisco Catalyst 6500 Series Switch Denial of Service Vulnerability (CVE-2015-0771) Release date:Updated on:Affected Systems: Cisco catalytic 6500 Description: Bugtraq id: 75063CVE (CAN) ID:

switch kernel becomes a bottleneck for performance implementation; the second is the cross-bus structure. It can establish direct point-to-point connections between ports, which is good for single-point transmission performance, but not suitable for multi-point transmission. The third is the hybrid cross-bus structure, this is a hybrid cross-bus implementation method. Its design idea is to divide an integrated cross-Bus Matrix into small cross matric

Branch switches.The Cisco switch can support any media as a trunk line. To achieve relay, you can use its unique isl tag. Isl (inter-switch link) is a protocol for transmitting vlan information and vlan data streams between switches, between switches and routers, and between switches and servers, by configuring isl encapsulation on the port directly connected to

Cisco switch vlan division // Add vlanSwitch> enableSwitch # vlan dataSwitch (vlan) # vlan 10 name v1VLAN 10 added: Name: v1Switch (vlan) # vlan 20 name v2VLAN 20 added: Name: v2Switch (vlan) # vlan 30 name v3VLAN 30 added: Name: v3Switch (vlan) # exitAPPLY completed. exiting .... // Add an interface Switch for the vlan # config tEnter configuration commands, one

================================ The port role is the specified interface, but the status is discarded, no forwarding is provided. It turns out to be an rstp problem. Why is a specified interface discarded? The specified interface should be fowding. Suddenly, a friend prompts me that if the rstp interface is selected as the specified interface, the downstream confirmation is required to enter the forwarding status. The P/A mechanism requires the link between the two switches to be point-to-poin

Found that Cisco Catalyst Switch reboot is always in rommom mode, the system reboots when the Confreg command chooses the startup mode of 1 (starting from the first file) and cannot enter the normal interface. Enter to boot: 0 = Disable Autoboot 1 = the internal flash device 2 = commands specified in ' BOOT ' environment variable [2]: 1 The analysis suggested that the iOS file might be corrupted or pu

Dual Switch stacking operationsFirst, the basic requirements:iOS version to be consistent, dedicated stacking module and stacking cable, maximum stack count 9Second, the advantages of stacking:High-density ports, easy to manageThird, stacking instances:1 : Clear the configuration of the two switches separately. 2 : Physically connected to the stacking cable, 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 enadle # configure terminal ② (config) # enab

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

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

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

I will talk about two tips, one about monitoring switch port traffic and the other about store value. 1. Monitor switch port traffic Switch monitoring document in the production environment on the Internet. Therefore, it is complete, and a key knowledge is interspersed in the middle. Zabbix is still innocent .!!! In this demonstration, I used the production envir

Batch Processing directly logs on to the cisco switch and executes commands. In many cases, we may log on to the cisco switch to execute some common viewing commands. However, every time we run cmd, enter the password, and enter the command, it is troublesome. It can be achieved through batch processing. For example, i

1. Unplug the power cord of the vswitch, press the switch Mode button, and re-plug the power cord of the vswitch. Release the Mode button after the LEDs on Port 1x are off. 2. For the Catalyst 2940/2950 L series: Unplug the power cord of the switch, hold down the Mode button of the switch, and re-plug the power cord of the sw