Cisco IOS: Cisco Network Operating System

Internet Operating System (IOS) is Cisco's private core software package, which is mainly implemented on Cisco routers and switches. Cisco IOS software uses a set of value-added technologies and features to provide Internet intelligence.
Cisco IOS includes a group of superb network technologies, mainly composed of internet devices such as a single router, it is used to provide shared media hub vro modules, vswitches, PC and workstation file services, multi-service WAN access switches, and PBXs under the ATM.

Cisco Internet Operating System has the following features:

1. Reliable proper path

Cisco IOS software provides protocol and route selection support for all major Internet protocol groups, including IP, Novell NetWare, Apple AppleTalk, Banyan VINES, digital DECNet, OSI, XNS, And Apollo domains.

2. Bandwidth Optimization

The Cisco IOS architecture optimizes bandwidth by eliminating unnecessary traffic on the WAN) Link and intelligently selecting the most economical available WAN link. IOS performance, such as Bandwidth Reservation and priority sorting, enables network administrators to store bandwidth and prioritize traffic based on application types, sources, or destinations.

3. Resource allocation Control

Cisco IOS includes priority queuing and customer queuing. The priority output queuing operation allows the network administrator to send certain packets to a queue with a higher priority, while the customer queuing operation allows the network administrator to reserve bandwidth, or, the traffic priority on the WAN link is divided based on the user-defined variable type. Cisco works with other desktop software TCP/IP and computer vendors to apply Cisco IOS architecture components to servers and extend from servers to end-user sites to support Bandwidth Reservation and queuing technologies.

4. Management and Security

Cisco IOS has network management performance and features. It can reduce network bandwidth requirements, handle overhead, unload Off-Load servers, save resources, and reduce system configuration tasks.

Cisco IOS software has a complete set of security toolboxes to differentiate resources and prohibit access to sensitive or confidential information or programs. Multi-faceted filters prevent users from knowing other network users or resources. Encryption, dial-in authentication, multi-level Configuration permissions, billing, logs, and other features can prevent unauthorized users from accessing information. Powerful firewall technology and remote access security solutions are mainly used to protect common information and assets.

5. Integration and scalability

The Cisco IOS software supports integrated routing technology, LAN switching technology, and ATM Cell Exchange Technology, and provides scalability to connect a large number of LANs and terminal stations. In addition, IOS also supports scalable routing protocols to avoid unnecessary congestion, overcome inherent limitations of the protocol, and overcome obstacles caused by regional distribution of the Internet and its distribution range.

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