add text to automatically configure:Login and passwordTransport input outputExec-timeoutLocal AAASSH timeout and ssh authentication-retries to minimum numberEnable only SSH and SCP for access and file transfer to/from the router
6. Protect Forwarding Plane
Enables Cisco Express Forwarding (CEF) or distributed CEF on the router, when availableAnti
A thorough understanding of Cisco, Linux, and Windows IP routing-1. As long as you understand the essence, the name is not important! Many Linux-based network experts consciously beat Cisco administrators in terms of management distance, route measurement, and other words. I think it's a pity that everyone is a family. Why is it so difficult for each other? If yo
This test configures remote management of routers and switches within the LAN, routers for Cisco 2621XM, switches for Cisco 2960Switch configuration:Switch>enaSwitch#confSwitch#configure TSwitch (config) #interface vlan 1Switch (config-if) #ip address 192.168.2.10 255.255.255.0Switch (config-if) #exitSwitch (config) #ip
The CISCO router performs a bridge on the instance router # sh ru Building configuration... www.2cto.com Current configuration :! Version 12.1 service timestamps debug uptime service timestamps log uptime no service password-encryption! Hostname router! Enable secret 5 $1 $ BE0q $ hj. WBtIBYppMX3zyfaPbR1!!!!! Memory-si
Assume that two Cisco routers and R1 (server) connect to R2 (client) to form a simple chained lan. DHCP is implemented below. The configuration commands and explanations are as follows:
1. Configure the R1 dhcp Service
Dhcp # configure terminal
// Enter global Mode
Dhcp (config) # service dhcp
// Enable the dhcp Function
Dhcp (config) # no ip dhcp conflictlogging
// Disable dhcp logging
Dhcp (config
The user checks network security and requires SSH logon to the core device. Previously, the device used Telnet logon, and the user name and password are transmitted in plaintext, which does not meet the security check requirements.
In fact, the SSH login configuration is very simple, mainly divided into the following steps:
1. Configure the Domain Name
Sd_core_r7600 (config) # IP domain-name sdcore
2. generate an SSH key
Sd_core_r7600 (config) # crypt
For Cisco router authentication, when performing the cisco Route Selection protocol (r12002; VPN) authentication, the key is irrelevant to the key ID when using plain text (General authentication, during MD5 authentication, the key and key ID are related, that is, the key IDs and keys at both ends must be the same, for example, R1 (config) # key chain key1 R1 (co
Hardware and Software Versions
This configuration is applicable to all Cisco IOS software versions.
DCE edge is connected by Wan DCE cable.
DTE edge is connected by Wan DTE cable.
For more information about the wan dce/DTE cable, see the serial cable documentation.Network Diagram
650) this. width = 650; "src =" 51cto.com/uploads/allianz 110909/1212454314-0.jpg "border =" 0 "/>
This article is based on the following Configuration:
In this configuratio
There are too many Qos information on the Cisco Router Traffic Control instance, but many of them are not practical. I have talked about a lot of theories. The following are the configurations on the routers of a subsidiary for your reference. In fact, as long as you understand the meaning of NBAR, CBWFQ, and WRED, traffic control can be configured as needed. Www.2cto.com Description: A subsidiary uses a 2
timeout and SSH Authentication-retries to minimum numberEnable only SSH and SCP for access and file transfer to/from the router6. Protect forwarding planeEnables Cisco Express Forwarding (CEF) or distributed CEF on the router, when availableAnti-SpoofingBlocks all IANA reserved IP address blocksBlocks private address blocks if customer desiresInstalla default ro
First, the experimental topologySecond, the specific configurationRouter (config) #do sh runbuilding configuration ... Current configuration:604 bytes!version 12.4no service Timestamps log datetime MSECNO service timestamps debug datetime MSECNO Service Password-encryption!hostname router!ip dhcp excluded-address 192.168.1.1!IP DHCP Pool ABCNetwork 192.168.1.0 25
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 process and processor utilization information, using Stack decodeShow tech-support;
Simply record that a Cisco router is simulated as a frame relay switch, and the router must have a serial interface module. Liehuo.net
// Enable Frame Relay switching on the vroFRSW (config) # frame-relay switching strong-fire-network
// Enter the Interface Configuration ModeFRSW (config) # int serial 0/1
Veryhuo.com
// Delete the interface
Cisco router nat translation 1. One-to-one correspondence between the internal address and the egress address disadvantages: When the egress address resources are scarce, only a small number of hosts can be connected to the internet. 2. The internal address shares the egress address. The router uses the egress address and port number, as well as the external host
You can configure a serial interface through a virtual terminal. to configure a serial interface, follow these steps:
1. In Global mode, enter the command "interface serial 0" to enter the serial interface configuration mode.
2. Each connected serial interface must have an IP address and subnet mask to forward IP packets, in interface configuration mode, enter the "ip
1. Use the Cisco router Debug cable to connect the router's console interface and the computer's serial port, turn on the router after powering on, and then 1. In Windows XP, initial debugging via the HyperTerminal logon router, as shown in network topology 7-8650) this.width=650; "title=" QQ picture 20150320165214.png
The port Mapping method enables access to specific port services from the Internet to the local area network internal machines. For example, the machine you are using is in a LAN connected to the Internet, all the services you open on the machine (such as FTP), by default, the outside world can not access. This is because your IP is the LAN internal IP, and the outside can access only the server you are con
When configuring the Cisco 3560 switch in the morning with the Cisco Packet Tracer practice, it is found that the IP address of the port cannot be configured in port configuration mode.Switch>Switch>enableSwitch#configure TerminalSwitch (config) #interface F0/1Switch (config-if) #?DhcpOnly DHCP commands are available. Check on the Internet, the original switch po
When the iOS corruption in router needs to be restored, Ctrl+break (Packettrace is CTRL + C) When the router starts, enters Rommon mode, and the command prompt changes to: Rommon 1>Then enter the following command:Rommon 1>IP_ADDRESS=A.B.C.D//router's current IP addressRommon Subnet mask for 2>ip_subnet_mask:x.x.x.x//routerRommon 3>default_gateway=y.y.y.y//
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.