tailieunhanh - Trunking Misconfiguration (Troubleshooting LAN Switches)

Trunking changes the formatting of the packet. The ports need to be in agreement as to what format they are using on the link or they will not understand each other. If you turn the trunking mode to on (as opposed to auto or desirable) for one port and the other port has the trunking mode set to off, they will not be able to communicate. | Lab Trunking Misconfiguration Troubleshooting LAN Switches Fast 2 3 Trunk Fast0 1 Crossover Connection ALSwitch 2900XL-Ent Fa 0 2 VLAN 10 Client Objective Trunking changes the formatting of the packet. The ports need to be in agreement as to what format they are using on the link or they will not understand each other. If you turn the trunking mode to on as opposed to auto or desirable for one port and the other port has the trunking mode set to off they will not be able to communicate. Scenario This is not part of the International Travel Agency network. As the Enterprise Network Administrator you add a new access layer switch to the network. You establish trunking using the command switchport mode trunk on interface FastEthernet 0 1 for the access layer switch and establish the necessary VLAN trunking parameters for VTP. The message 02 18 24 LINK-4-ERROR FastEthernet0 1 is experiencing errors appears on ALSwitch. Lab Tasks Clear the DLRouter configuration using the following commands Router erase start Erasing the nvram filesystem will remove all files Continue confirm y OK Erase of nvram complete Router reload Proceed with reload confirm y Clear the DLSwitch configuration using the following commands Console enable clear config all This command will clear all configuration in NVRAM. This command will cause ifIndex to be reassigned on the next system startup. Do you want to continue y n n y .2001 Jun 16 12 29 45 PAGP-5-PORTFROMSTP Port 2 1 left bridge port 2 1 .2001 Jun 16 12 29 45 PAGP-5-PORTFROMSTP Port 2 2 left bridge port 2 2 .2001 Jun 16 12 29 45 PAGP-5-PORTFROMSTP Port 2 3 left bridge port 2 3 1-3 Semester 8 Internetwork Troubleshooting - Lab Copyright 2001 Cisco Systems Inc. Console enable reset This command will reset the system. Do you want to continue y n n y Clear the ALSwitch configuration and VLAN database using the following commands ALSwitch clear start Erasing the nvram filesystem will remove all files Continue confirm y OK Erase