Application: Cisco router IOS ing

I have heard of Cisco router IOS. Next I will introduce the host configuration and the Cisco ing of Cisco router IOS. How can we use the knowledge we have learned to bring us convenience? The following is a detailed introduction. By configuring the host table on the vro, the administrator can directly type the pre-established host name when using Telnet or ping commands without remembering the IP address of each vro. The following describes how to configure the host table:

1. Enter the global mode of the vro. Router # configure terminal

2. Map the vro whose host name is cisco to the address 192.168.0.12. Router (config) # ip host cisco 192.168.0.12

3. Save the configuration to RVRAM. Router (config) # copy running-config startup-config

In this way, when entering the Telnet cisco command, the router will automatically map the host name to the IP address of IP192.168.0.12. We have explained that the Cisco router IOS software is stored in different locations, and most of the cisco router's boot system commands are stored in non-volatile memory NVRAM ), the network administrator can change the location where the router loads the IOS image by changing the value of the Register. Several options for starting the queue in the cisco router definition register

1. If the network administrator uses the boot system command to specify a specific source in global mode, the router will locate the Cisco router IOS at the specified position in the boot system during restart.

2. If no boot system queue is available in NVRAM, the cisco router uses the IOS image stored in flash by default.

3. If there is no Cisco router IOS image file in flash memory, the router will load an IOS image from TFTP.