Weight_Attribute

R2
ip prefix-list CHANGE seq 5 permit 1.1.1.0/24
ip prefix-list CHANGE seq 10 permit 5.5.5.0/24
route-map SET_WEIGHT permit 10
match ip address prefix-list CHANGE
set weight 50

router bgp 20
nei 10.1.24.4 route-map SET_WEIGHT in

#sh ip bgp on R2 (for 1.1.1.0 & 5.5.5.0)