CCNA LAB 72: Configure, Verify, and Troubleshoot EtherChannels (Static/PAgP/L...

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Lab Objective:
The objective of this lab exercise is for you to learn and understand how to use redundant links between Cisco switches in order to build port channels.


Lab Purpose:
Understanding how to enable the different port-channel protocols on a Layer 2 network is a must for every engineer to know. As a Cisco engineer, as well as in the Cisco CCNA exam, you will be expected to know how to configure port-channels using LACP, PAgP or the ON mechanism.

Certification Level:
This lab is suitable for ICND2 and CCNA certification exam preparation.

Lab Difficulty:
This lab has a difficulty rating of 7/10.

Readiness Assessment:
When you are ready for your certification exam, you should complete this lab in no more than 20 minutes.


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




Task 1:
Configure the hostnames on Sw1, Sw2, and Sw3 as illustrated in the topology.

Task 2:
Create two VLANs on every switch as follows:

VLAN10: Data
VLAN20: Management
Task 3:
Configure each switchport shown in the diagram as a trunk and make sure all VLANs are allowed.

Task 4:
Start configuring the port channels as follows:

Links between Sw1 and Sw2: Port channel 1/Protocol LACP
Links between Sw1 and Sw3: Port channel 2/Protocol PAgP
Links between Sw2 and Sw3: Port channel 3/Use the ON mode
Note: You can select which side is active/passive or desirable/auto.

Task 5:
Make sure each port channel is up and running by issuing the following command on each switch:

show etherchannel summary

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

Task 2:
For reference information on configuring VLANs, please refer to earlier labs.

Task 3:
SW1(config)#int range fa0/1-4
SW1(config-if-range)#switchport mode trunk
SW1(config-if-range)#switchport trunk allow vlan all
SW1(config-if-range)#exit
SW1(config)#

SW2(config)#int range fa0/1-4
SW2(config-if-range)#switchport mode trunk
SW2(config-if-range)#switchport trunk allow vlan all
SW2(config-if-range)#exit
SW2(config)#

SW3(config)#int range fa0/1-4
SW3(config-if-range)#switchport mode trunk
SW3(config-if-range)#switchport trunk allow vlan all
SW3(config-if-range)#exit
SW3(config)#
Task 4:
SW1(config)#interface range fa0/1-2
SW1(config-if-range)#channel-group 1 mode active
SW1(config-if-range)#exit
SW1(config)#

SW1(config)#interface range fa0/3-4
SW1(config-if-range)#channel-group 2 mode desirable
SW1(config-if-range)#exit
SW1(config)#

SW2(config)#interface range fa0/1-2
SW2(config-if-range)#channel-group 1 mode passive
SW2(config-if-range)#exit
SW2(config)#

SW2(config)#interface range fa0/3-4
SW2(config-if-range)#channel-group 3 mode on
SW2(config-if-range)#exit
SW2(config)#

SW3(config)#interface range fa0/1-2
SW3(config-if-range)#channel-group 2 mode auto
SW3(config-if-range)#exit
SW3(config)#

SW3(config)#interface range fa0/3-4
SW3(config-if-range)#channel-group 3 mode on
SW3(config-if-range)#exit
SW3(config)#
Task 5:
SW1#show etherchannel summary
Flags:  D - down        P - in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        U - in use      f - failed to allocate aggregator
        u - unsuitable for bundling
        w - waiting to be aggregated
        d - default port

Number of channel-groups in use: 2
Number of aggregators: 2

Group  Port-channel  Protocol    Ports
------+-------------+-----------+------------------------------------

1      Po1(SU)           LACP   Fa0/1(P) Fa0/2(P)
2      Po2(SU)           PAgP   Fa0/3(P) Fa0/4(P)

SW2#show etherchannel summary
Flags:  D - down        P - in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        U - in use      f - failed to allocate aggregator
        u - unsuitable for bundling
        w - waiting to be aggregated
        d - default port

Number of channel-groups in use: 2
Number of aggregators: 2

Group  Port-channel  Protocol    Ports
------+-------------+-----------+------------------------------------

1      Po1(SU)           LACP   Fa0/1(P) Fa0/2(P)
3      Po3(SU)           -      Fa0/3(D) Fa0/4(P)

SW3#show etherchannel summary
Flags:  D - down        P - in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        U - in use      f - failed to allocate aggregator
        u - unsuitable for bundling
        w - waiting to be aggregated
        d - default port

Number of channel-groups in use: 2
Number of aggregators: 2 Group  

Port-channel  Protocol    Ports
------+-------------+-----------+-------------------------------------

2      Po2(SU)           PAgP   Fa0/1(P) Fa0/2(P)
3      Po3(SU)           -      Fa0/3(D) Fa0/4(P)



来源: CCNA LAB 69: Assigning Multiple Instances to a VLAN Simultaneously
来源: CCNA LAB 70: Configuring Spanning Tree Protocol for Access Ports (PortFast)
来源: CCNA LAB 71: Enabling Rapid Per-VLAN Spanning Tree

Joe.Zhangjy

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谢谢楼主分享！

新野

看看，谢谢！！！

lxzhanshe

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