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cisco 640 802 ccna portable command guide 2008 phần 7

Thay đổi router để chế độ cấu hình giao diện. Nếu bạn thay đổi băng thông, OSPF sẽ tính toán lại chi phí của liên kết.Bắt đầu OSPF quá trình 1. Cho phép xác thực đơn giản, mật khẩu sẽ được gửi trong văn bản rõ ràng. Trở về đến toàn cầu | Saving VLAN Configurations 119 NOTE When the switchport mode access command is used the port operates as a nontrunking single VLAN interface that transmits and receives nonencapsulated frames. An access port can belong to only one VLAN. Using the range Command Switch config interface range fastethernet 0 1 - 9 Enables you to set the same configuration parameters on multiple ports at the same time. NOTE There is a space before and after the hyphen in the interface range command. Switch config-if-range switchport mode access Sets ports 1-9 as access ports. Switch config-if-range switchport access vlan 10 Assigns ports 1-9 to VLAN 10. Verifying VLAN Information Switch show vlan Displays VLAN information Switch show vlan brief Displays VLAN information in brief Switch show vlan id 2 Displays information about VLAN 2 only Switch show vlan name marketing Displays information about VLAN named marketing only Switch show interfaces vlan x Displays interface characteristics for the specified VLAN Saving VLAN Configurations The configurations of VLANs 1 through 1005 are always saved in the VLAN database. As long as the apply or the exit command is executed in VLAN database mode changes are saved. If you are using VLAN configuration mode the exit command saves the changes to the VLAN database too. 120 Erasing VLAN Configurations If the VLAN database configuration is used at startup and the startup configuration file contains extended-range VLAN configuration this information is lost when the system boots. If you are using VTP transparent mode the configurations are also saved in the running configuration and can be saved to the startup configuration using the copy running-config startup-config command. If the VTP mode is transparent in the startup configuration and the VLAN database and the VTP domain name from the VLAN database matches that in the startup configuration file the VLAN database is ignored cleared and the VTP and VLAN configurations in the startup configuration .