Cisco IOS Upgradation
Cisco IOS Upgradation
I have long been engaged in computer network management, in the CISCO router’s long-term daily maintenance and management practices has accumulated some experience. Are now summarized a CISCO router IOS image upgrade several methods for a vast network of enthusiasts, or colleagues for reference. In introducing the methodology of CISCO Router IOS upgrade, it is necessary memory Cisco router knowledge to make a simple introduction. Similar to the router and computer, it also has the memory and operating system. Cisco In the Cisco Road (Internetwork Operating System) IOS From the device, its operating system, known as the Internet operating system (Internetwork Operating System)often referred to as IOS.
Router’s memory are
- ROM: read-only memory that contains the router is using a copy of the IOS;
- RAM: IOS will be sharing and random access memory into main memory. IOS Is mainly used to store the operation of the router configuration and IOS and routing protocol-related data structures;
- FLASH (Flash): used to store the IOS software image files, flash memory can erase the memory that it can use a new version of IOS overwrite, IOS upgrades are mainly flash in the IOS image file replacement.
- NVRAM: Non-volatile random access memory used to store the system configuration files
In the normal start of the CISCO router IOS upgrade, the relatively simple. Below are the concrete steps for IOS upgradation:
1) Look for a TFTP server software (with CISCO’s TFTPServer or 3COM Corporation 3Cserver and so on, to upgrade older IOS image file, it is recommended to use 3Cserver), installed on a computer, will be upgraded IOS image file copied to the relevant directory (Example: D: \), and run the TFTP server software, through the menu, set the Root directory to copy the IOS image file directory (eg D: \). Assuming that the computer’s IP address 10.32.10.1;
2) Connect the router’s console port and PC-COM1, use the PC terminal software to access the super router, the router address set to 10.32.10.32 (the IP address of the computer can be the same network segment). Suggesting that before the original IOS upgrade IOS file backup down, to prevent the escalation of the IOS file to be a problem is not available;
Router # dir flash: (see the current IOS image file name, can also be used Router # Show version)
Directory of flash:/ Directory of flash: /
1 -rw- 5998292 C2600-I-MZ.122-11.BIN
8388608 bytes total (2390252 bytes free)
Router # copy flash tftp (backup IOS file from flash to tftp server)
Source filename []? C2600-i-mz.122-11.bin
Address or name of remote host []? 10.32.10.1 (TFTP server address)
Destination filename [c2600-i-mz.122-11.bin]?
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
… …
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!
5998292 bytes copied in 324.071 secs (18509 bytes/sec)
Router#
==============================================
3) Now upgrade the IOS from TFTP to router
Router # copy tftp flash
Address or name of remote host []? 10.32.10.1 (TFTP server address)
Source filename []? C2600-i-mz.122-11.bin (need to upgrade the new IOS image file name)
Destination filename [c2600-i-mz.122-11.bin]?
Do you want to over write? [Confirm]
Accessing tftp: / / 10.32.10.1/c2600-i-mz.122-11.bin …
Erase flash: before copying? [Confirm]
Erasing the flash filesystem will remove all files! Continue? [Confirm]
Erasing device … eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee … erasedee
Erase of flash: complete Erase of flash: complete
Loading c2600-i-mz.122-11.bin from 10.32.10.1 (via Ethernet0 / 0): !!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
… …
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 5998292 bytes]
Verifying checksum … OK (0xA0C0)
5998292 bytes copied in 318.282 secs (18846 bytes / sec)
Router #