type: u32
help: Bandwidth of interface (megabits/sec)
syntax:expression: $VAR(@) >= 1 && $VAR(@) <= 100000; "Must be between 1-100000"
val_help: u32:1-100000; Bandwidth in megabits/sec (for calculating OSPF cost)

update: vtysh -c "configure terminal" -c "interface $IFNAME" -c "bandwidth $VAR(@)" 
delete: vtysh -c "configure terminal" -c "interface $IFNAME" -c "no bandwidth"