Improving Redundant Switched Topologies with EtherChannel Flashcards
Is a technology that enables link aggregation. enables packets to be sent over several physical interfaces as if over a single interface. EtherChannel logically bonds several physical connections into one logical connection.
EtherChannel
EtherChannel bundles individual links into a channel group to create a single logical interface ________ that provides the aggregate bandwidth of several physical links.
port channel
LACP, you can control link aggregation (for example the maximum number of bundled ports allowed). LACP is also superior to static port channels with its automatic failover, where traffic from a failed link within EtherChannel is sent over remaining working links in the EtherChannel.
Link Aggregation Control Protocol
This LACP mode places a port in an active negotiating state. In this state, the port initiates negotiations with other ports by sending LACP packets.
LACP active
This LACP mode places a port in a passive negotiating state. In this state, the port responds to the LACP packets that it receives, but it does not initiate LACP packet negotiation. The passive mode is useful when you do not know whether the remote system supports LACP.
LACP passive
Command displays one line of information per port channel and is particularly useful when several port channel interfaces are configured on the same device. The output of the command provides, among other, information on port channel interface status, method used for link aggregation, member interfaces, and their status.
show etherchannel summary
Command displays the general status of the logical port channel interface that represents the aggregated link. In the example, the interface port-channel 1 is operational.
show interface port-channel
Command displays information about the specific port channel interface. In the output, the Group: field indicates the port channel identifier, which is 1 in the example.
show etherchannel port-channel
