Discover cisco router troubleshooting commands, include the articles, news, trends, analysis and practical advice about cisco router troubleshooting commands on alibabacloud.com
Cisco is now the world's largest manufacturer of switching routes! Many of our businesses, large and small, can use the network, and it is possible to switch routes to Cisco! When we install network equipment, we may ask the network engineer to help us install it! Access to the router has a lot of passwords! What if we forget these passwords? We may have to make
I. troubleshooting commands
1. show command:
1) Global commands:
Show version; displays the system hardware and software versions, DRAM, Flash
Show startup-config; displays the configuration content written into NVRAM
Show running-config; displays the currently running configuration content
Show buffers; Detailed output buffer name and size
Show stacks; provides
Basic configurations of Cisco routers and Cisco router configuration commands
En -- enter the privileged mode config t -- enter the global configuration mode wr (OR) -- save the configuration (otherwise, the configuration fails before the power-off)
1. Set the password for entering the vro Console
In global configurati
I. troubleshooting commands
1. show command:1) Global commands:Show version; displays the system hardware and software versions, DRAM, flashShow startup-config; displays the configuration content written into NVRAMShow running-config; displays the currently running configuration contentShow buffers; Detailed output buffer name and sizeShow stacks; provides the router
Essential security commands for CISCO router initialization 1. Security Settings for vro Access Control 1. Strict control over the administrator who can access the vro. Record Filing is required for all maintenance tasks. Www.2cto.com 2. do not access the vro remotely. Even if you need to access the vro remotely, we recommend that you use the access control list
In fact, many brands of vro configuration commands are very similar. Therefore, this article provides a comprehensive analysis of commonly used Cisco vro configuration commands for Cisco vrouters, at the same time, I learned more.
The basic status of a vswitch with the Cisco
There may be a lot of people who don't know about Cisco router configuration. Here we mainly analyze the Cisco router configuration commands. After reading this article, you will certainly have a lot of GAINS, I hope this article will teach you more things.
Mode Conversion c
When you are in contact with a vro, it is very important to master the Cisco vro commands. It is easy for you to find it on the Internet. The following is my careful arrangement, which makes it easier for you to visually accept. I hope my work is not in vain.
I. Starting with Cisco router command:Access-enable allows t
Access-enable allows the router to create a temporary access list entry in the dynamic access list
Access-group: Apply the access control list (ACL) to the interface.
Access-List defines a standard IP ACL
Access-template manually replaces the temporary access list entry on the connected vro
Appn sends commands to the Appn Subsystem
ATM sig executes ATM signaling command
transmission rate does not exceed the target receiving rate. It is achieved by setting a window size for transmission;
Error Control: ensure that the received data is continuous and there is no error. If there is a lost or lost PDU, no ACK packet is sent.
Connection-oriented protocols include ATM, TCP, Novell SPX, and Apple Talk ATP;
2. Non-connection protocols
Connection settings and termination are not included, and no throttling or error control is available.
Non-connection protocols include
)
4501480 bytes copied in 56.88 secs (80383 bytes/sec)
The replication process takes several minutes. The duration varies depending on the network. During the copy process, a message is displayed indicating the file that has been accessed.
Exclamation point "!" Indicates that the replication process is being processed. Each exclamation point indicates that ten packets have been successfully transmitted. Image verification and authentication will be performed after the image is written to flash m
complete the online help and training process.
Using the Cisco SDM smart wizard, you can systematically configure a LAN, wireless LAN and WAN interface, firewall, Intrusion Prevention System IPS, and IP SecurtiyIPSec) VPN to gradually complete the Cisco router configuration. The Cisco SDM smart wizard can intelligentl
commands generated by Cisco SDM before providing a router configuration change solution. Cisco SDM helps administrators use the Secure Sockets Layer (SSL) and vro security configuration (SSHv2) Protocols to connect to the remote location to configure and monitor vro1 Fig 1 ). Using this technology, you can establish a
CISCO router switch SNMPv2 configuration, cisco Router
Cisco router SNMP Configuration
Snmp-server community CQGASPZW-R RO // ro read-only
Snmp-server trap-source Loopback0 // use the loopbackaddress as the source address of the
(Config-router) #exitIf this is all configured, then use the ping command to test it!Here is a start-up-configuring HSRP Hot Spares:Configure on the active three-layer switch:Switch (config) #interface vlan 1Switch (config-if) #standby 1 IP 192.168.1.254Switch (config-if) #standby 1 priority 200Switch (config-if) #standby 1 track fastethernet 0/2Switch (config-if) #standby 1 preemptConfigure on the backup layer three switch:Switch (config) #interface
1. Troubleshooting)Here we will introduce the hardware and software problems that may occur when using vrouters. During the networking process, such as X.25, FR, DDN, DDR, TCP/IP, problems encountered in different network environments such as interconnection with IBM large hosts and solutions .? Troubleshooting tool? What is the Troubleshooting of TCP/IP connecti
of the Broadband Router. when accessing the internet, our PC will send a connection request to the Broadband Router. Finally, we set the DNS server. This option varies depending on different regions and line suppliers. Here we enter 202.100.96.68. You can select your own broadband line,. After this setting, the PC in the LAN can share the Internet with the Broadband Ro
the technical assistance center and send the obtained information to trained staff. Remember that the core dump information must be saved when the router crashes. After the vro is restarted, such core dump information does not exist.
Important troubleshooting commands used when a router crashes
Before learning how to
For the Cisco router security configuration command family, the following are 10 configuration commands, which are expected to be good for everyone. When talking about configuring a new Cisco router, most configurations depend on the type of the
systems of Cisco router IOS, which may expose sensitive information. This vulnerability allows a low-level user (for example, a user who does not know the 'enable' password) to use the system to view some information, in theory, this information should be visible only to users who know the 'enable' password. This information includes the access control list and other content. Generally, after logging on to
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