NEXT_HOP
The NEXT_HOP attribute says what IP address the packets should be forwarded to next. Each time the route is advertised, this value is updated. The NEXT_HOP attribute is much like a gateway in static routing.
FortiGate units allow you to to change the advertising of the FortiGate unit’s IP address (instead of the neighbor’s IP address) in the NEXT_HOP information that is sent to IBGP peers. This is changed with the config neighbor, set next-hop-self command.
The BGP commands related to NEXT_HOP include:
config router bgp
config neighbor
set attribute-unchanged [as-path] [med] [next-hop]
set next-hop-self {enable | disable}
end
end