Juniper Aggregate Ethernet / Ether Channel / Ether Bundle at Router
Need to configure at chassis to make this device enable aggregate.
Aggregate interface works upto 8 interface.
# set chassis aggregated-devices ethernet device-count 4
[Here I create four aggregate interface like ae0 ae1 ae2 and ae3]
Create aggregate interface
# set interfaces ge-0/0/1 ether-options 802.3ad ae0
# set interfaces ge-0/0/2 ether-options 802.3ad ae0
# set interfaces ge-0/0/3 ether-options 802.3ad ae0
[Here interface ge-0/0/1, ge-0/0/2 and ge-0/0/3 will be aggregate to ae0 interface]
Now I make this ae0 interface and setup an IP or You can use as same a normal Interface.
# set interfaces ae0 unit 0 family inet address 188.8.131.52/30
[Here minimum-links 1 mean out ot of three interface if one link is up then aggregate interface will also UP]