Tuesday 2 January 2018

CCNA - ETHERCHANNEL - Lab


Lab: EtherChannel Configuration

Objective: To demonstrate the configuration of EtherChannel

Topology: 

Set up the lab as per the configuration given below.

Click here to download the pre-configured Packet tracer.

Fig 1 : Initial Lab setup for EtherChannel Configuration 


Configuration: 

Switch1: EtherChannel Configuration

Switch1>enable
Switch1#Configure Terminal
Switch1(config)#Interface range fastethernet 0/23-24
Switch1(config-if-range)#channel-group 5 mode ?
  active     Enable LACP unconditionally
  auto       Enable PAgP only if a PAgP device is detected
  desirable  Enable PAgP unconditionally
  on         Enable Etherchannel only
  passive    Enable LACP only if a LACP device is detected
Switch1(config-if-range)#channel-group 5 mode desirable
Switch1(config-if-range)#exit

Switch 2: EtherChannel Configuration 

Switch2>enable
Switch2#configure terminal
Switch2(config)#interface range fastEthernet 0/23-24
Switch2(config-if-range)#channel-group 5 mode auto
Switch2(config-if-range)#exit
Switch2(config-if)#switchport mode trunk
Switch2(config-if-range)#exit

After the configuration the topology will look like this:

Fig 2 : Final Lab setup for EtherChannel Configuration 

Note : The F0/23 on switch 1 will be turned on if the configuration is done correctly.

Verification:

Apply the command on both switch.

Switch#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: 1
Number of aggregators:           1

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

5      Po5(SD)           PAgP   Fa0/23(P) Fa0/24(P) 

To know more information about the PortChannel, use the following command
                   
Switch#show etherchannel port-channel 
                Channel-group listing:
                ----------------------

Group: 5
----------
                Port-channels in the group:
                ---------------------------

Port-channel: Po5
------------

Age of the Port-channel   = 00d:00h:10m:02s
Logical slot/port   = 2/5       Number of ports = 2
GC                  = 0x00000000      HotStandBy port = null
Port state          = Port-channel
Protocol            =   PAGP
Port Security       = Disabled

Ports in the Port-channel:

Index   Load   Port     EC state        No of bits
------+------+------+------------------+-----------
  0     00     Fa0/24   Desirable-Sl       0
  0     00     Fa0/23   Desirable-Sl       0
Time since last port bundled:    00d:00h:09m:00s    Fa0/23

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