For a while, Beijing sent us a router with a 12-year licensed software version and the description is self-destruction for 12 years. Let's look at this case: 2901(config)# do sh lice all Evaluation total period: 608 weeks 2 days Evaluation perio

In and out are relative, for example: A(s0) — — -(s0)B(s1) — — — — (s1)C Suppose you want to reject A to access C now, and assume that you are required Is to do ACL on B (of course C can also), we replaced this topology with an example: B’s s0 port is the

1. Network Cutover Overview I want to make it clear that the concept of "network" . It does not refer to small-scale networks such as small home broadband, but large and medium-sized commercial networks, such as enterprises, financial institutions, gov

Telnet *.*.*.* The device to be telnet needs to set the password of line vty. If you need to enter privileged mode, you need to configure it. Enable password Show users (check "Who" is logged in locally) Show sessions (view "I" telnet outgoing se

The three-tier architecture of the network: 1. Access layer: Provide network access points, the corresponding device ports are relatively dense. Main equipment: switches, hubs. 2. Convergence layer: The aggregation point of the access layer can prov

7609 FWSM module FAILOVER configuration This configuration is very simple, only the script is posted, mainly in the project, you may encounter Configuration above 7609 firewall module 1 vlan-group 10 firewall module 5 vlan-group 10 firewall

In the early hours of this morning, the Cisco Symposium was held in the United States which it was announced that a new certification system would be released on 24th February,2020. The current certification deadline was on 23rd February,2020! Existing ce

The first common method step: Note: With a TFTP server software (with cisco's TFTPServer or 3CDaemon), when the file is too large, 3Cdaemon will be faster. 1. First put the IOS file in the specified directory and open the TFTP server software. 2.

First, FTP (File Transfer Protocol) The full name of FTP is File Transfer Protocol. Used for bidirectional transfer of control files on the Internet. At the same time, it is also an application. There are different FTP applications based on different ope