Topic: tech cisco prev next
tech cisco > EtherChannel
EtherChannel is Cisco’s name for the protocol commonly known as LACP. Cisco call it EtherChannel, so I’m calling it EtherChannel here.
Layer 2 LACP is configured by applying a channel-group statement to every interface to be included in the LACP group, then configuring the LACP group as a PortChannel interface.
The active keyword causes the device to actively try to form an LACP bundle with the connected device. The passive keyword instead would cause the switch to accept an LACP active solicitation from the connected device, but would not try to form a relationship with another passive device.
interface Fa1/0/1
channel-group 10 mode active
!
interface Fa1/0/2
channel-group 10 mode active
!
interface PortChannel10
!
Make sure that the configuration (apart from the description) matches on all
interfaces in the PortChannel. Once the interfaces have been added to a
PortChannel, do not configure them directly as this will put the
PortChannel into the Suspended state. Instead, place configuration
statements on the PortChannel, and they will be propagated to the interfaces.