HPE FlexNetwork HSR6800 Configuration Manual page 248

Figure 73 Network diagram
Configuration procedure
Configure IP addresses for interfaces. (Details not shown.)
1.
Configure IBGP:
2.
To prevent route flapping caused by port state changes, this example uses loopback interfaces to
establish IBGP connections.
Because loopback interfaces are virtual interfaces, you need to use the peer connect-interface
command to specify the loopback interface as the source interface for establishing BGP connections.
Enable OSPF in AS 65009 to make sure that Router B can communicate with Router C through loopback
interfaces.
# Configure Router B.
<RouterB> system-view
[RouterB] bgp 65009
[RouterB-bgp] router-id 2.2.2.2
[RouterB-bgp] peer 3.3.3.3 as-number 65009
[RouterB-bgp] peer 3.3.3.3 connect-interface loopback 0
[RouterB-bgp] quit
[RouterB] ospf 1
[RouterB-ospf-1] area 0
[RouterB-ospf-1-area-0.0.0.0] network 2.2.2.2 0.0.0.0
[RouterB-ospf-1-area-0.0.0.0] network 9.1.1.1 0.0.0.255
[RouterB-ospf-1-area-0.0.0.0] quit
[RouterB-ospf-1] quit
# Configure Router C.
<RouterC> system-view
[RouterC] bgp 65009
[RouterC-bgp] router-id 3.3.3.3
[RouterC-bgp] peer 2.2.2.2 as-number 65009
[RouterC-bgp] peer 2.2.2.2 connect-interface loopback 0
[RouterC-bgp] quit
[RouterC] ospf 1
[RouterC-ospf-1] area 0
[RouterC-ospf-1-area-0.0.0.0] network 3.3.3.3 0.0.0.0
[RouterC-ospf-1-area-0.0.0.0] network 9.1.1.0 0.0.0.255
[RouterC-ospf-1-area-0.0.0.0] quit
[RouterC-ospf-1] quit
[RouterC] display bgp peer
BGP local router ID : 3.3.3.3
Local AS number : 65009
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