According to the Cisco documentation below
• When configuring Layer 3 EtherChannels, you must manually create the port channel logical
interface first (see the “Configuring Port Channel Logical Interfaces for Layer 3 EtherChannels” section on page 12-7), and then put the Layer 3 LAN ports into the channel group as described in this section.
• When configuring Layer 2 EtherChannels, configure the LAN ports with the channel-group
command as described in this section, which automatically creates the port channel logical interface.
You cannot put Layer 2 LAN ports into a manually created port channel interface.
• For Cisco IOS to create port channel interfaces for Layer 2 EtherChannels, the Layer 2 LAN ports must be connected and functioning
It is this statement “You cannot put Layer 2 LAN ports into a manually created port channel interface” from above that I disagree with
I have created interface Port-channel 35
And then I have bundled Gi1/0/1 andGi1/0/2 within this using the channel-group command as normal
Can any explain if this was something you couldn’t do on older switches or is this an error. I seem to recall reading this and witnessing this issue in the past but can’t be sure
Thanks in advance,
David
Hello David.
I agree that you can add L2 ports in manually defined etherchannels. i remember
doing that multiple times myself. How else would we provision new links in an
already created etherchannels??? So i would safely assume that the statement is not accurate.
Wilson.
“
You can put Layer 2 LAN ports into a manually created port channel interface
“
You cannot put Layer 3 interfaces ports into any created port channel interface