etherchannel / lacp

Posted on 2011-10-10
Last Modified: 2012-05-12
hi there

is etherchannel and lacp the same thing or are they different?
Question by:mikeleahy
    LVL 20

    Accepted Solution

    No, not really.

    Etherchannel is a type of port aggregation used mostly on Cisco. It is used to group multiple physical links (ports on same switch) into a logical link.

    LACP stands for Link Aggregation Control Protocol. LACP can be configured over etherchannel, and is the standard (mixed vendor) negotiation protocol. PAGP is used only with Cisco.

    LVL 14

    Assisted Solution

    I'd disagree with carlmd (on semantics).  LACP is one of the protocols that is used to set up an etherchannel.  PAgP is another (Cisco proprietary) protocol that also set up a channel interface.

    Wheteher it is set-up using PAgP or LACP, it is still callen an EtherChannel (or FastEtherChannel, or GigEtherChannel).  So, if you're in a multi-vendor environment, Etherchannel usually means one set-up via LACP.  In a Cisco-only enviroment, Etherchannels can refer to channels set-up via LACP or PAgP.
    LVL 20

    Expert Comment

    OK, thought that was what I said? No disagreement here.

    Author Comment

    dont bicker guys ;-)

    points to be shared

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