Configuring LACP to work between Catalyst and 300 Series switches In this example, we’re configuring and connecting 4 ports on a Catalyst 3560 to 4 ports on an SG300-28P and aggregating them using LACP. The LACP protocol is a standards-based protocol and both sides of the link is configured with the same parameters. Catalyst also supports Etherchannel and PAgP, both of which are proprietary and cannot be used between these switches. First we’ll configure the 3560: 1) On the interfaces which will be part of the LAG, create a channel group (link aggregation group or port channel) and use either “active” or “passive” mode to enable standards-based LACP: 2) The config will now look like this when you do a “show run” 3) On the port channel, set the encapsulation to 802.1q and enable the VLANs to go over this trunk. Configuring Interface range Gig 1 through 4 Creating a LAG with these ports Port Channel has been created Channel group has been assigned to the 4 interfaces