H3C Technologies H3C SR8800 - Manual (Page 262)

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{
On Router A, establish EBGP connections with Router B and Router C respectively; configure
BGP to advertise network 8.1.1.0/24 to Router B and Router C, so that Router B and Router C
can access the internal network connected to Router A.
{
On Router B, establish an EBGP connection with Router A and an IBGP connection with Router
C; configure BGP to advertise network 9.1.1.0/24 to Router A, so that Router A can access the
intranet through Router B; configure a static route to interface loopback 0 on Router C (or use
a routing protocol like OSPF) to establish the IBGP connection.
{
On Router C, establish an EBGP connection with Router A and an IBGP connection with Router
B; configure BGP to advertise network 9.1.1.0/24 to Router A, so that Router A can access the
intranet through Router C; configure a static route to interface loopback 0 on Router B (or use
another protocol like OSPF) to establish the IBGP connection.
# Configure Router A.
system-view
[RouterA] bgp 65008
[RouterA-bgp] router-id 1.1.1.1
[RouterA-bgp] peer 3.1.1.1 as-number 65009
[RouterA-bgp] peer 3.1.2.1 as-number 65009
[RouterA-bgp] network 8.1.1.1 24
[RouterA-bgp] quit
# Configure Router B.
system-view
[RouterB] bgp 65009
[RouterB-bgp] router-id 2.2.2.2
[RouterB-bgp] peer 3.1.1.2 as-number 65008
[RouterB-bgp] peer 3.3.3.3 as-number 65009
[RouterB-bgp] peer 3.3.3.3 connect-interface loopback 0
[RouterB-bgp] network 9.1.1.0 24
[RouterB-bgp] quit
[RouterB] ip route-static 3.3.3.3 32 9.1.1.2
# Configure Router C.
system-view
[RouterC] bgp 65009
[RouterC-bgp] router-id 3.3.3.3
[RouterC-bgp] peer 3.1.2.2 as-number 65008
[RouterC-bgp] peer 2.2.2.2 as-number 65009
[RouterC-bgp] peer 2.2.2.2 connect-interface loopback 0
[RouterC-bgp] network 9.1.1.0 24
[RouterC-bgp] quit
[RouterC] ip route-static 2.2.2.2 32 9.1.1.1
# Display the BGP routing table on Router A.
[RouterA] display bgp routing-table
Total Number of Routes: 3
BGP Local router ID is 1.1.1.1
Status codes: * - valid, ^ - VPNv4 best, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? – incomplete
Network NextHop MED LocPrf PrefVal Path/Ogn