CCNA LAB13: 配置Switchports to Dynamic

小乔

Lab Objective:
The objective of this lab exercise is for you to learn and understand how to set the auto-negotiation type on a trunk link.

Lab Purpose:
Switch interfaces are set to automatically attempt to create a trunk link when connected to another switch. You need to know how to set either dynamic desirable or dynamic auto.

Certification Level:
This lab is suitable for CCENT exam preparation.

Lab Difficulty:
This lab has a difficulty rating of 5/10.

Readiness Assessment:
When you are ready for your certification exam, you should complete this lab in no more than 10 minutes.

Lab Topology:
Please use the following topology to complete this lab exercise:




Task 1:
In preparation for the configuration, configure a hostname on Sw1 as well as Sw2.

Task 2:
Configure Sw1 so that auto-negotiation of trunking is set to dynamic auto.

Task 3:
Configure Sw2 so that auto-negotiation of trunking is set to dynamic desirable.


Task 4:
Verify your configurations with the appropriate show commands (illustrated in Task 3 below).

Configuration and Verification
Task 1:
For reference information on configuring hostnames, please refer to earlier labs.

Task 2:
Sw1#show int fast0/1 switchport
Name: Fa0/1
Switchport: Enabled
Administrative Mode: dynamic auto
Operational Mode: static access
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: native
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
The interface is actually already set to dynamic auto, which is the default setting for this model of switch (yours may vary). Let’s put the command in anyway.

Sw1(config)#int fast0/1
Sw1(config-if)#switchport mode dynamic auto
Task 3:
NOTE: You need to have at least one switch set to either trunk or dynamic desirable for a trunk link to form.


Sw2#show int fast0/1 sw
Name: Fa0/1
Switchport: Enabled
Administrative Mode: dynamic auto
Operational Mode: static access
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: native
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)

Sw2#show interface trunk

Sw2(config)#int fast0/1
Sw2(config-if)#switchport mode dynamic desirable
Sw2(config-if)#end

Sw2#show int fast0/1 switchport
Name: Fa0/1
Switchport: Enabled
Administrative Mode: dynamic desirable
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)

Sw2#show interface trunk
Port        Mode         Encapsulation  Status        Native vlan
Fa0/1       desirable    n-802.1q       trunking      1
The n indicates that it negotiated the encapsulation type.


来源: CCNA LAB 8: 配置 Securing VTP Domains
来源: CCNA LAB 9: 配置  Switch Access Port Security
来源: CCNA LAB10: 配置 Advanced Switch Access Port Security
来源: CCNA LAB11: 配置Advanced Static Switch Access Port Security
来源: CCNA LAB12: 配置Disabling Auto-negotiation of Trunking

高彤贼能说话啊

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