To set up a Etherchannel is easy; you just need to make sure that the ports you want to set up the channel have the exactly same config. Example:
switchport mode trunk
switchport trunk encapsulation dot1q
switchport trunk native vlan 10 (default is Vlan 1)
channel-group 1 mode on
So, you type the command below, to show the channel group summary:
R1#sh etherchannel 1 summary
Flags: D - down P - in port-channel
I - stand-alone s - suspended
R - Layer3 S - Layer2
U - in use
Group Port-channel Ports
1 Po1(SD) Fa1/0(D)
As simple as you see. You do not have to change any gateway settings, the Etherchannel acts as a single link and would not impact on the entire config. If you have more switches from different vendors, you can use a similar solution that is the Link Aggregation (LACP). Cisco switches use the proprietary solution, which is the Etherchannel.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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