protocol between as is called the External Gateway Protocol External Gateway Protocol (also called Inter-Domain routing protocol): there are two types of inter-domain routing protocols: externalGateway Protocol (EGP) and Border Gateway Protocol (BGP)2) Dynamic routing according to the algorithm can be divided into: Distance vector routing protocol, link state routing protocolDistance Vector Routing protocol: Select Route RIP,IGRP based on the number of routes that are routed from the source net
password is not encrypted, you can directly use the more nvram: startup-config command to view the password. If the password is encrypted, you can only modify the password. Enter the following command:
Router # configure memory
Router # configure terminal
Router (config) # enable secret 1234 abcd
Router (config) # ctrl-z
Router # write memory
11. Enter configure terminal at the EXEC prompt to enter the configuration mode. Enter the config-register command to restore the register value recorded
Tags: HSRP working principle STP effect ACL access control List loop storm Cisco private protocolDay 031. What is HSRP? How does it work?HSRP: Hot Standby Routing protocolHSRP is a Cisco private protocol that ensures that user communication can be quickly and transparently restored when a network edge device or access link fails.This provides redundant rows for the IP network. By using the same virtual IP a
(config)# ctrl-z Router # write memory
11. Enter configure terminal at the EXEC prompt to enter the configuration mode. Enter the config-register command to restore the register value recorded in step 2.
12. Press Ctrl-Z to exit the configuration.
13. In privileged mode, run the write memory command to save the configuration and restart reboot.
Method 2
This method restores the following vrouters: Cisco 1003, 1600, 3600, 4500,
"Introduction" Within a switched network, it is possible to segment and organize flexibly through VLANs. VLANs can group devices in a LAN. A group of devices in a VLAN communicates as if it were connected to the same line. VLANs are based on logical connections, not physical connections. Types of VLANsThere are many different types of VLANs used in modern networks. Some VLAN types are defined by traffic category. Some other VLAN types are defined by specific features.Data VLAN: used to deliver u
Automatic backup and fallback of Cisco iOS profiles requires the use of the Archive Archive configuration mode feature of iOS. In general, only the version number of iOS has the Archive configuration mode feature in 12.3 (4)
Cisco iOS profile automatic backup All commands are as follows:
router>
Router>enable
Router#configure Terminal
Router (config) #archive
Router (config-archive) #write-memory
Trunk Link Trunk: Same inter-VLAN communication on different switchesHow to play tag tag encapsulationPackage Type: IEEE 802.1q/cisco ISLIEEE 802.1q:4 Bytes, internal encapsulation, publicCisco isl:30 bytes External encapsulation, privateSwitch port configuration mode: Trunk/acces (OFF)/Dynamic desirable/dynamic AutoTwo auto NO mode of operation generally either trunk or accessEthernet Channel: Multiple physical ports to form a logical port for greate
options:
If the password is not encrypted, directly with more Nvram:startup-config command can see the password, in password encrypted case, cannot see, can only modify, enter the command as follows:
Router # Configure Memory
Router # Configure Terminal
Router (config) # enable secret 1234ABCD
Router (config) # ctrl-z
Router # Write memory
11. Enter configure terminal into configuration mode at the exec prompt. Enter the Config-register command to restore the register value recorded in t
One of my customers has a VPN which I 'd like to access. they provided me with a copy of the Cisco VPN Client for Linux, and a "PCF" configuration file for the client. here's what I had to do to get the Cisco VPN Client working in Linux-and it does work just fine.
First we make a directory to put the bits and bobs in
alan@hactar:~$ mkdir ciscoalan@hactar:~$ cd cisco
Tags: tle simulates a trunk mode ace 51cto fast spanning tree quick typeLoops are present in the network, and all loops are formed due to confusion caused by ambiguous destination paths. The loop has a great impact on the network. Spanning Tree protocol is a good solution to this problem.The idea of spanning a tree protocol topology is that, regardless of the physical connection between switches, the switch can automatically discover a network with no loop topology, and the network of the logica
The Cisco IOS naming convention is composed of three parts: the Cisco IOS binary file name. PPPPP = platform FFFF = feature MM = runtime memory and compression format. The following figure shows the topic: PPPPP is the platform identifier, which indicates that the ffff of the Cisco7200 series router is a feature of IOS (see the feature set of Cisco IOS ), for exa
the same time, data is compressed to greatly speed up transmission.This document describes how to configure Secure logon Using SSH on a Cisco router. This method is simple, secure, and suitable for promotion and use in network maintenance.
2. Configure the SSH service on the Cisco Router
In the Cisco router product series, only IOS
PIX 515E Product Essentials and application environment
Cisco PIX 515E Firewall Application Environment
Cisco PIX 515E is an enhanced version of the widely used Cisco PIX 515 Platform, which provides industry-leading state firewalls and IP Security (IPSEC) virtual private network services. Cisco PIX 515E is designed fo
(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 vlan 1Switch (config-if) #standby 1 IP 192.1
First of all, the iOS operating platform,c2500, c2600, c4500, c2950 represent the hardware platform that runs this iOS, for example: C2500 refers to the 2500 series routers. Second, look at the iOS version, iOS has the major version number: 11.0, 11.1, 11.2, 11.3, 12.0, 12.1, 12.2, 12.3, 12.4, and so on, these major version numbers are equivalent to the version of Windows Win98, Win2000, WinXP, Win2003. When Cisco publishes a major version of iOS, it
As a leader in the routing industry, there is a lot of market demand. Here we mainly analyze the Cisco router configuration issues. Cisco SDM is based on Cisco IOS? An intuitive Web device management tool developed by Software routers. It simplifies Cisco router configurations through smart wizard, so that customers an
security strategy and describes and defines available NAC methods.Advantages of NACAccording to 2005According to the CSI/FBI Security Report, although security technology has been developing for many years and its implementation is even more costly than millions of dollars, however, viruses, worms, spyware, and other forms of malware are still the main problems facing various organizations. The large number of security incidents that organizations encounter each year cause system interruptions,
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