Hi Sandeep,
Different number of links can be aggregated in the aruba switches depending on the type of link aggregation you want the switch ports to be a part of.
You can add only 8 links in static LACP trunking and 12 in dynamic LACP trunking. Links over the maximum are standby links, which cannot be used to forward traffic. However, if a link fails, LACP automatically adds one of the standby links to the link aggregation.
Aruba typically recommends static lacp because in dynamic lacp there is no logical interface in the switch configuration and hence you cannot assign vlans to it statically or STP or other settings. GVRP can be used in such cases to assign vlans to the dynamic lacp trunk.
For static LACP:
Enter the config mode and run the following command:
trunk <port_number1,port_number2,...> trk1 lacp
2)For dynamic lacp:
Enter into the interface context and enter the following command:
lacp <active | passive>
Another type of trunking (manual trunking) can also be configured but it does not use any protocol and is not better than static lacp.