Juniper EX2500 Configuration Manual page 64

EX2500 Ethernet Switch Configuration Guide
We recommend that you use the default long timeout to reduce LAPDU processing.
If the CPU utilization rate of your switch remains at 100% for periods of 90 seconds
or more, consider using static trunks instead of LACP. However, if CPU use is low,
you can set the LACP timeout value on the switch to short (3 seconds), instead.
ex2500(config-if)# lacp timeout short
ex2500(config-if)# exit
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Link Aggregation Control Protocol