Hi,
I may be not 100% accurate.
Link Aggreation is usually can be between switches, or from switch to hosts. You are comining your ethernet/fastethernet etc. ports so an aggregate bandwith of say 100+100 MB is achieved. Usually you aggregate the trunk links
trunk links are links between two switches (usually) carring 1 or more vlan information. If the switches are not cascasded or stacked , then you are doing trunk
cascade is like this
switchA ---- SwitchB---SwitchC---SwitchA
bascially all switches are linked together
Stacking is like you are combining two or more switches together to form a single switch.
Thanks
Nadeem
