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
In the network World, Cisco System Inc. Nobody knows, no one does not know. With its IOS (Internet operating System), Cisco is an absolute leader in the multiprotocol router market. Currently, nearly 80% of the routers in the Internet are from Cisco. In fact, in addition to the main product of the router, Cisco also ha
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
relay mode on the port connecting a switch to a vswitch or connecting a vswitch to a vro, this enables data frames belonging to different VLANs to be transmitted through this relay link.
The frame format of VLAN relay is divided into two types: ISL (Inter-Switch Link, connection between switches) and 802.1Q. The former is the protocol unique to the Cisco
Pen name is also large, the motto of the gameToday it is the command of the Cisco switch which is the practice of the work operation, I feel that sometimes it may be necessary to trace the port of which the MAC address belongs to the switching device, and to determine the object quickly, I share my exercise to the lovers who need it.The first thing you need to know is the IP address and account password of
There are still many things worth learning about Cisco switches. Here we mainly introduce the Cisco switch interface mode. In a Cisco switch network, there are four main types of interfaces in the LAN that are ultimately stable: access/trunk/multi/dot1q-tunnel.
1. access: it
Tags: cisco switch password resetCisco switch, what do we do when we forget its login password? How do I clear its password? principle: Enter the bottom of the switch, by modifying the switch original profile name, after restarting the s
When switching data frames, a switch can select different modes to meet network and user needs. Cisco switches provide three switching modes:
Storage forwarding Mode
The Store-and-forward mode means that the switch can complete the entire data frame and perform the forwarding operation only after the CRC verification is passed. If CRC verification fails, that
The naming rules for Cisco switches are more complex than the naming rules for routing,Look at these:ws-c2960-24tc-l, WS-C2950G-24-EI-DC, Ws-c2960-24tt-l, Ws-c3750g-24ts-e, Ws-c3750g-24t-s, We didn't find them on the switch, we just saw the Catalyst 2950 series and wrote it all: The Cisco Catalyst 2950 Series, which means the
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 ------------------------------------- enter the s0/0 interface 3640 (config-if) # no ip add --------------------
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.
#config terminal
Route (config) # line vty 0 4 ---- enter telnet remote login port mode (0 4 allows 5 Users)
Route (config-line) # password CISCO ---- set the password to "CISCO" (to encrypt the password, enable vro password protection before: service pass-encryption)
Route (config-line) # login ---- encrypted upon login
Route(config-line)#exit
Continue to enter the privileged mode and wh
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 switch (config) # interface vl
Cisco mds9222i Fibre Switch most commonly used debug commands1. Check the switch portShow interface [Interface-range]View specified port run status, WWN information, configuration parameters, and packet statistics.Demonstration:mds9222i-1# Show Interface FC1/1FC1/1 is trunking-port FC1/1 operating normally, is a TE portHardware is Fibre Channel, SFP was short wav
The Cisco router switch sets automatic backup for IOS files and restores the automatic backup and rollback of Cisco IOS configuration files. The archive configuration mode function of IOS is required. Generally, only IOS versions 12.3 (4) All commands for automatic backup of the Cisco IOS configuration file are as foll
Cisco 3550 switch stp learning notes STP (Spanning Tree Protocol) (IEEE 802.1D) Spanning Tree Protocol-review the working principles of SW: 1. the frame it forwards cannot be modified. create a MAC-PORT ing table based on source MAC learning. forward the frames in the target MAC ing table directly from the corresponding port. for frames without target MAC ing/Target wide (Group) broadcasting, SW learns diff
The article I want to share and configure VLAN on Linux through Cisco Catalyst Switch.Requirements:1. Linux installed on a PC with one or more NICs (Network Interface Card). I Use the Centos 5.4 using 2.6.18-164.11.1.EL5PAE kernel. It should is applicable on other Linux distros such as Slackware, Ubuntu, Fedora, Debian, etc.2. Cisco Catalyst Switch 29503.2 Pc/lap
Port security Configuration for the Cisco PT Simulation Experiment (7) switchExperimental Purpose : Master the port security function of the switch, control the user's secure accessExperimental Background : The company network adopts the personal fixed IP Internet program, in order to prevent the company internal User IP address borrowing, using, unauthorized access to the
Common commands for Cisco switches -- set the switch Password
A. Change the remote TELNNET Password
Switch#configureterminal
Switch(config)#linevty04
Switch(config-line)#passwordqycx123
Switch(config-line)#l
Cisco switch initialization ManagementTo properly manage and simplify troubleshooting, the following parameters should be configured during initial installation: 1. system name 2. manage ip configuration 3. clock and ntp settings 4. telnet and SSH access configuration 5. DNS6. system log 7. snmp is used to configure the switch system name on the
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