Experimental topology
Router (config) #frame-relay switching to simulate a router as a Frame relay switch
Router (config) #inter S1/1
Router (config-if) #clock rate 128000
Router (config-if) #encapsulation Frame-relay Configuration Interface encapsulation and binding relay
The default Frame relay enabled on the interface is encapsulated in the Cisco package and, if connected to a non-
================================ 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
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
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
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
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
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
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
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
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
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.
Cisco switch status lights are all available on the front panel of the Cisco switch and are used to monitor system activity and performance. These LEDs are called LEDs ).The indicators on the front panel include: · system indicator www.2cto.com · remote power supply indicator · port mode indicator · Port Status Indicat
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
After using the Console port to set IP address information for the switch and enable the HTTP service, you can access the switch through a Web browser that supports JAVA, you can modify the parameters of a vswitch through a Web browser and manage the vswitch. In fact, you can modify and set many important parameters of a vswitch on the Web interface, and view the running status of the vswitch in real time.
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
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