HP HPE FlexNetwork 7500 series Configuration Manual page 273

For example, as shown in
relationship, and Router B and Router C establish an IBGP neighbor relationship. If Router C has no
route destined for IP address 1.1.1.1/24, you must configure Router B to set itself 3.1.1.1/24 as the
next hop for the network 2.1.1.1/24 advertised to Router C.
Figure 63 NEXT_HOP attribute configuration
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2.1.1.1/24
1.1.1.1/24
Router A
If a BGP router has two peers on a broadcast network, it does not set itself as the next hop for routes
sent to an EBGP peer by default. As shown in
neighbor relationship, and Router B and Router C establish an IBGP neighbor relationship. They are
on the same broadcast network 1.1.1.0/24. When Router B sends EBGP routes to Router A, it does
not set itself as the next hop by default. However, you can configure Router B to set it (1.1.1.2/24) as
the next hop for routes sent to Router A by using the peer next-hop-local command as needed.
Figure 64 NEXT_HOP attribute configuration
1.1.1.1/24
AS 100
Router A
IMPORTANT:
If you have configured BGP load balancing, the router sets itself as the next hop for routes sent to an
IBGP peer or peer group regardless of whether the peer next-hop-local command is configured.
To configure the NEXT_HOP attribute (IPv4 unicast/multicast address family):
Step
1. Enter system view.
Figure 63, Router A and Router B establish an EBGP neighbor
1.1.1.2/24 3.1.1.1/24 3.1.1.2/24
EBGP
Router B
Figure
1.1.1.2/24
Router B
1.1.1.3/24
Router C
Command
system-view
261
AS 200
IBGP
Router C
64, Router A and Router B establish an EBGP
AS 200
Remarks
N/A