The company's GPS patrol system needs to go WVPDN to communicate, but before looking for a telecommunications took a CISCO2811, collapsed once, the 2811 is the telecommunications sent, the estimated quality is not how, and then to find the company to buy the same type of equipment, 2811 discontinued, on the Cisco 2911.Yesterday arrived Ah, excited a bit, super terminal connected on, looked at the system configuration, the result of the hand is cheap,
This article uses a specific example to illustrate how to configure the access to ADSL through the vro. What problems should we pay attention to during access? The following articles will benefit you a lot.
Note: In this case, a common adsl modem and a cisco 25001841) router (dual Ethernet port) and IOS 12.2 (15) T need to be used to connect to the China Telecom adsl PPPoE, able to achieve LAN Internet shar
With the development of China's routing industry, Wireless routers are also widely used. Here we mainly explain a new Wireless-N Wireless router launched by Cisco, cisco Wireless Router WRT320NWRT320N is the latest Wireless-N Wireless router launched by Linksys. This product
-list 10 deny 192.168.1.0 0.0.255Router (Config) # access-list 10 permit any! The router is prohibited from receiving and updating the route information of the 192.168.1.0 network.Router (Config) # router ospf 100Router (Config-router) # distribute-list 10 in! Disable router forwarding to spread route information of 19
! The router is prohibited from receiving and updating the route information of the 192.168.1.0 network.Router (Config) # router ospf 100Router (Config-router) # distribute-list 10 in! Disable router forwarding to spread route information of 192.168.1.0 NetworkRouter (Config) # rou
Article Title: simulate a cisco router using dynamic in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
Environment: centos5.2
Software: dynamic. cisco-ios
1: Download the dynamic binfile.
Wget http://www.ipflow.utc.fr/
Encapsulation Frame-relay boot Frame Relay Package
Encapsulation Novell-ether rules the Novell unique format used on the network segment
Encapsulation PPP set PPP to the encapsulation method used by the serial port or ISDN interface
Encapsulation SAP rules the Ethernet 802.2 format used on the network segment the Cisco password is SAP
End Exit Configuration mode
Erase Remove flash memory or configure cache
Erase Startup-config Delete the conte
It is very important for Cisco router users to learn about commands for password recovery of Cisco routers. For many beginners, the ROM Monitor of Cisco routers is often unfamiliar or even daunting for a simple reason, first, we do not often use this mode and are not familiar with its related operations; second, Operat
CISCO Router Network Address Translation (NAT)Tutorial name: Cisco Router Network Address Translation (NAT) objective: to connect all Intranet IP addresses to the Internet using a small number of public IP addresses. Tutorial Introduction: using NAT technology, when an intranet private address sends data packets to a v
Tags: Cisco CCNA router Password managementfor device security, the device administrator typically sets the user name and password for the device. Here's how to configure 3 passwords, with emphasis in the middle.Username Test password Cisco//This is to set up a layer of accounts and passwordsEnable password 123// This is the Setup admin passwordRouter (config) #l
Cisco port status: CSU ── channel server unit, DSU ── data server, unit, DTE ── DataTerminalEquipment
1. Serial * is down, line protocol is down (DTE) faults:
[1] No power is added to the vro.
[2] LINE is not connected to CSU/DSU.
[3] hardware error.
Solution:
[1] Check power supply.
[2] Check whether the cables and serial ports used are correct.
[3] switch to another serial port.
2. Serial * is up and line protocol is down (DTE) faults:
[1] local or
In the BGP Route Selection protocol, you can filter the BGP Route Selection and update. To do this, you need to use the prefix list. I. prefix list features: (1) it can be incrementally modified. We know that we cannot delete an entry in the general access control list, if you want to delete an entry in the list, you can only delete all the entries in the list. In the prefix list, you can delete or Add an entry separately. Www.2cto.com (2) and prefix list can be used in
Global debugging
When configuring a Cisco router, the boundaries between global and interface commands are obvious. In this case, we use "Global" to identify commands that cannot be used for interface debugging or specific transmission media types and Protocol debugging. For example, in vrouters 2500, you can use Debugging commands to analyze the Cisco Discovery
RIP and IGRP are commonly used router configuration protocols. What problems should we pay attention to when configuring RIP and IGRP? What should we do? The following configuration steps provide detailed answers.
RIP Protocol
RIP (Routing information Protocol) is an Internal Gateway Protocol (IGP) that is widely used earlier and is suitable for small-sized similar networks, is a typical distance-vector protocol. For more information, see RFC1058 an
As the core device of network communication, Cisco routers are widely used. The following is my experience in practice:
Control port interface practices and connections
Connect one end of the control cable RJ45 in the Cisco2500/1000 series router accessories to the Cisco CONSOLE port, and the Cisco7000/4000 series router
This article describes how to configure a vswitch for a CISCO 3550 router and how to configure access control for a MAC address.
In network management, users often encounter this situation: some users violate management regulations and modify their own IP addresses without permission to access restricted resources. Such behavior not only undermines information security rules, but may also cause network comm
1. Preparation Tools
Cisco TFTP server, HyperTerminal, iOS files
iOS files are not easy to find, you need to look at the hardware version, as well as the size of ROM RAM, to my Cisco 2621XM for example (with two fastethernet),Start looking for a few 2600 of iOS, the brush is not correct, the problem of unrecognized network interface, can not be configured, there should be F interface with S Ios,
CHAP (Challenge Handshake Authentication Protocol) and PAP (Password Authentication Protocol) are generally used to provide security Authentication on PPP encapsulated serial lines. With CHAP and PAP authentication, each Cisco router is identified by a name to prevent unauthorized access.
Task commands
Set the PPP encapsulation ppp1
Set the authentication method ppp authentication {chap | chap pap | pap cha
This article describes how to control the BT traffic of a Cisco router through specific operations, and describes the specific operation methods in detail. I hope this article will help you.
Network-Based Application Recognition (NBAR) indicates Network Application Recognition. NBAR is a technology that can dynamically search for protocols in Layer 4 to Layer 7. It can not only control static and simple net
are used
The route of this packet.
---- GRE only provides encapsulation of data packets. It does not have encryption to prevent network listening and attacks. Therefore, in the actual environment, it often corresponds to an IP address.
When the SEC is used together, IPSec provides encryption of user data to provide users with better security.
The GRE protocol has two main purposes: internal protocol encapsulation and private address encapsulation. In China, CEN uses almost all TCP/IP protocols,
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