H3C Technologies H3C SR8800 - Manual (Page 423)

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Figure 127 Network diagram
Configuration procedure
1. Configure IP addresses for interfaces. (Details not shown)
2. Configure BGP:
# Configure Router A.
<RouterA> system-view
[RouterA] bgp 100
[RouterA-bgp] router-id 1.1.1.1
[RouterA-bgp] peer 1.1.1.2 as-number 300
# Configure Router B.
<RouterB> system-view
[RouterB] bgp 200
[RouterB-bgp] router-id 2.2.2.2
[RouterB-bgp] peer 1.1.2.2 as-number 300
# Configure Router C.
<RouterC> system-view
[RouterC] bgp 300
[RouterC-bgp] router-id 3.3.3.3
[RouterC-bgp] peer 1.1.1.1 as-number 100
[RouterC-bgp] peer 1.1.2.1 as-number 200
[RouterC-bgp] peer 1.1.3.2 as-number 400
# Configure Router D.
<RouterD> system-view
[RouterD] bgp 400
[RouterD-bgp] router-id 4.4.4.4
[RouterD-bgp] peer 1.1.3.1 as-number 300
[RouterD-bgp] quit
# Inject routes 4.4.4.4/24, 5.5.5.5/24, and 6.6.6.6/24 on Router A.
[RouterA-bgp] network 4.4.4.4 24
[RouterA-bgp] network 5.5.5.5 24
[RouterA-bgp] network 6.6.6.6 24
Router B
AS 200
GE3/1/1
1.1.2.1/24
Router D Router C
AS 400
Router A
AS 100
GE3/1/1
1.1.1.1/24
GE3/1/3
1.1.3.1/24
AS 300
GE3/1/1
1.1.1.2/24
GE3/1/2
1.1.2.2/24
GE3/1/1
1.1.3.2/24