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cisco 640 802 ccna portable command guide 2008 phần 10

Cisco tiếp tục khuyến cáo spanning-tree vlan x gốc chính hoặc spanning-tree vlan x lệnh gốc thứ cấp được sử dụng thay vì để sửa đổi các bộ định thời chuyển đổi.Tất cả các quyền. Không có phần nào của cuốn sách này có thể được sao chép, | Restoring the Cisco IOS Software from ROM Monitor Mode Using Xmodem 191 Do you wish to continue y n n y Choose y to continue. In HyperTerminal go to Transfer then Send File see Figure 16-1 . Locate the Cisco IOS Software file on the hard drive and click Send see Figure 16-2 . Router will reload when transfer is completed. Reset baud rate on router. Router config line con 0 Router config-line speed 9600 Router config-line exit HyperTerminal will stop responding. Reconnect to the router using 9600 baud 8-N-1. Figure 16-1 Finding the Cisco IOS Software Image File 192 Restoring IOS software using tftpdnld Figure 16-2 Sending the Cisco IOS Software Image File to the Router Restoring the Cisco IOS Software Using the ROM Monitor Environmental Variables and tftpdnld Command rommon 1 IP_ADDRESS 192.168.100.1 Indicates the IP address for this unit. rommon 2 IP_SUBNET_MASK 255.255.255.0 Indicates the subnet mask for this unit. rommon 3 DEFAULT_GATEWAY 192.168.100.1 Indicates the default gateway for this unit. rommon 4 TFTP_SERVER 192.168.100.2 Indicates the IP address of the TFTP server. rommon 5 TFTP_FILE c2600-js-l_121-3.bin Indicates the filename to fetch from the TFTP server. rommon 6 tftpdnld Starts the process. . output cut . Do you wish to continue y n n y . output cut . Rommon 7 i Resets the router. The i stands for initialize. NOTE Commands and environmental variables are case sensitive so be sure that you have not accidentally added spaces between variables and answers. CHAPTER 17 Password-Recovery Procedures and the Configuration Register This chapter provides information and commands concerning the following topics The configuration register A visual representation What the bits mean The boot field Console terminal baud rate settings Changing the console line speed CLI Changing the console line speed ROM Monitor mode Password-recovery procedures for Cisco routers Password-recovery procedures for 2960 series switches The Configuration Register router show version .