I0S (Internet work 0perating System) is a special software that can configure Cisco router hardware to route or bridge information from one network to another. 10S is the "source of power" of Cisco's various router products. It can be said that it is precisely because of the existence of 10S that the Cisco router has strong vitality. When purchasing a Cisco router, you must also purchase a license to run IOS. 10S has many functions of forgetting roots and forgetting roots. You must decide which form of 10S to run based on your actual situation.
There are currently multiple versions of 10S. Generally, you need to use new software, old software or more mature software, whether you need a special IOS feature, or whether you have decided to use a specific hardware platform.
C1sco uses a set of encoding schemes to formulate IOS versions. The full version number of 10S consists of three parts:
1) Main version.
2) Auxiliary version.
3) Maintenance version.
Among them, the main version and the auxiliary version number are separated by a decimal point, and the two form the main version of an IOS. The maintenance version is displayed in brackets. For example, an IOS version number like this: 11.2(10), its main version is 11.2, and the maintenance version is 10 (the 10th maintenance or patch). Cisco often releases IOS updates, fixes some bugs that exist, or adds new features. After it releases an update, the number of the maintenance version is usually incremented.
Since there are too many versions of IOS, Cisco will also provide release instructions, describing the changes and new contents of the version. If you want to know what changes have occurred in a version or what has been added to the new version, you should read the release instructions carefully.
Cisco uses a special naming scheme to let us know how reliable their software is! The names of these versions are defined as follows:
General Deployment (Standard Edition—GD), Limited DepIoyment (Limited Edition—LD), and Early Deployment (Early Edition—ED).
Generally, the GD version of I0S is the most reliable. If a 10S has been in the market for a long time, Cisco can correct enough errors, and C5sco believes that it has been satisfied by most people using this software, it will give it a GD name.
After the version number changes, the change in functions or characteristics is not large. You should choose the features you need based on what you want to run on the router. For example, do you only want to run "Internet Protoc01" (Internet Protoc01, IP), or do you want to run IP, Novell's "Internet Packet Exchange, IIX" and DECnet at the same time? According to your own needs, you can summarize all the features you want the router to have in the network, and then select I0S based on these features.
There are a variety of models of routers running 10S. From very cheap low-end models to very expensive high-end models, everything is available. The model you purchase should usually be determined based on the purpose and price of the router. If you are equipping a router for a network trunk, you should consider a high-end router series to achieve very fast speed and reliability, and you can place multiple interfaces in it. But if a new router is purchased to connect an office LAN or WAN to the mainline, a certain access type of router series should be considered. I don’t want to discuss the price issue with you here - that thing changes too quickly. But there is a rule that always exists: the smaller the model number, the cheaper it is.
It is gratifying that for IOS configuration, its commands are basically common in the entire IOS router product line. This means we only need to master a command interface. This interface happens to be a command line interface. So whether you communicate with the router through the console port, through a Modem, or through a Telnet connection, the command line interface you see is the same.
Regardless of what type of LAN or WAN interface you want to use, basically there is a router that provides support. For example, routers without interfaces are not very useful. One of the very important aspects of I0S configuration is the configuration of interfaces. Some physical interface types supported by the router include:
--Ethernet.
--Fast Ethernet
--Token ring.
--FDDI。
--Low speed serial.
--Fast serial.
--HSSI。
--ISDN BRI。
Please don't think that the content introduced here is eternal. In fact, this field is changing too quickly, and I am not a salesman or a businessman. If you really want to know more about the 10S version, 10S feature set and router model, please visit the manufacturer's website. Article entry: csh Editor in charge: csh
There are currently multiple versions of 10S. Generally, you need to use new software, old software or more mature software, whether you need a special IOS feature, or whether you have decided to use a specific hardware platform.
C1sco uses a set of encoding schemes to formulate IOS versions. The full version number of 10S consists of three parts:
1) Main version.
2) Auxiliary version.
3) Maintenance version.
Among them, the main version and the auxiliary version number are separated by a decimal point, and the two form the main version of an IOS. The maintenance version is displayed in brackets. For example, an IOS version number like this: 11.2(10), its main version is 11.2, and the maintenance version is 10 (the 10th maintenance or patch). Cisco often releases IOS updates, fixes some bugs that exist, or adds new features. After it releases an update, the number of the maintenance version is usually incremented.
Since there are too many versions of IOS, Cisco will also provide release instructions, describing the changes and new contents of the version. If you want to know what changes have occurred in a version or what has been added to the new version, you should read the release instructions carefully.
Cisco uses a special naming scheme to let us know how reliable their software is! The names of these versions are defined as follows:
General Deployment (Standard Edition—GD), Limited DepIoyment (Limited Edition—LD), and Early Deployment (Early Edition—ED).
Generally, the GD version of I0S is the most reliable. If a 10S has been in the market for a long time, Cisco can correct enough errors, and C5sco believes that it has been satisfied by most people using this software, it will give it a GD name.
After the version number changes, the change in functions or characteristics is not large. You should choose the features you need based on what you want to run on the router. For example, do you only want to run "Internet Protoc01" (Internet Protoc01, IP), or do you want to run IP, Novell's "Internet Packet Exchange, IIX" and DECnet at the same time? According to your own needs, you can summarize all the features you want the router to have in the network, and then select I0S based on these features.
There are a variety of models of routers running 10S. From very cheap low-end models to very expensive high-end models, everything is available. The model you purchase should usually be determined based on the purpose and price of the router. If you are equipping a router for a network trunk, you should consider a high-end router series to achieve very fast speed and reliability, and you can place multiple interfaces in it. But if a new router is purchased to connect an office LAN or WAN to the mainline, a certain access type of router series should be considered. I don’t want to discuss the price issue with you here - that thing changes too quickly. But there is a rule that always exists: the smaller the model number, the cheaper it is.
It is gratifying that for IOS configuration, its commands are basically common in the entire IOS router product line. This means we only need to master a command interface. This interface happens to be a command line interface. So whether you communicate with the router through the console port, through a Modem, or through a Telnet connection, the command line interface you see is the same.
Regardless of what type of LAN or WAN interface you want to use, basically there is a router that provides support. For example, routers without interfaces are not very useful. One of the very important aspects of I0S configuration is the configuration of interfaces. Some physical interface types supported by the router include:
--Ethernet.
--Fast Ethernet
--Token ring.
--FDDI。
--Low speed serial.
--Fast serial.
--HSSI。
--ISDN BRI。
Please don't think that the content introduced here is eternal. In fact, this field is changing too quickly, and I am not a salesman or a businessman. If you really want to know more about the 10S version, 10S feature set and router model, please visit the manufacturer's website. Article entry: csh Editor in charge: csh