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Okay, got it. An enable mode command that saves the active config, replacing the startup config when a Cisco network device initializes. Used in interface configuration mode. An interface mode command that manually sets the speed to the specified value or negotiates it automatically. Displays a large variety of configuration settings and current operational status, including VLAN trunking details. Lists information about the currently operational trunks and the VLANs supported by those trunks. In router configuration mode, configures the software to receive and send only RIP version 2 packets.

In router configuration mode, sets only that interface to passive RIP mode. This article explained the importance of verifying a Cisco IOS image and the problems this simple step can help avoid. Deal with bandwidth spikes Free Download.

Web Vulnerability Scanner Free Download. Note: The commands might slightly differ depending on the device you are working on Cisco Router or Catalyst Switch and the running version of the IOS software. VG verify flash0:cuniversalk9-mz. Articles To Read Next:.

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Cisco Router 'User Exec' Mode. Restrict S Cisco Router Basics. This train includes both extended maintenance releases and standard maintenance releases. The M releases are extended maintenance releases, and Cisco will provide bug fixes for 44 months.

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The T releases are standard maintenance releases, and Cisco will only provide bug fixes for 18 months. Because IOS needs to know the cleartext password for certain uses, e.

This is designed to prevent "shoulder-surfing" attacks when viewing router configurations and is not secure — they are easily decrypted using software called "getpass" available since , or "ios7crypt", [15] a modern variant, although the passwords can be decoded by the router using the "key chain" command and entering the type 7 password as the key, and then issuing a "show key" command; the above example decrypts to "stupidpass". However, a local account is usually still required for emergency situations.

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For Cisco products that required very high availability, such as the Cisco CRS-1 , the limitations of a monolithic kernel were not acceptable. In Cisco introduced the Cisco IOS XR network operating system on the series of network routers , extending the microkernel architecture from the CRS-1 routers to Cisco's widely deployed core routers. In Cisco introduced IOS Software Modularity, which extends the microkernel architecture into the IOS environment, while still providing the software upgrade capabilities.

From Wikipedia, the free encyclopedia. For the submarine cable system, see CIOS cable system. For the mobile operating system, see Apple iOS. For the Nintendo Wii operating system, see Wii system software. This article includes a list of references , but its sources remain unclear because it has insufficient inline citations. Please help to improve this article by introducing more precise citations.

February Learn how and when to remove this template message. January 22, Retrieved March 30, Cisco Press. Donahue O'Reilly Media. Retrieved 27 September Retrieved 12 Sep Retrieved 21 Feb Retrieved August 9, Press release. Cisco Systems. July 28, Archived from the original on February 5, Retrieved June 18, Routing software.