BGP路由联盟基本配置
R1:
interface GigabitEthernet0/0/0
ip address 10.10.13.1 255.255.255.0
interface LoopBack0
ip address 10.10.1.1 255.255.255.255
interface LoopBack100
ip address 192.168.1.1 255.255.255.0
bgp 65001
confederation id 100
peer 10.10.3.3 as-number 65001
peer 10.10.3.3 connect-interface LoopBack0
ipv4-family unicast
undo synchronization
network 192.168.1.0
peer 10.10.3.3 enable
ospf 1
area 0.0.0.0
network 10.10.0.0 0.0.255.255
R2:
interface GigabitEthernet0/0/0
ip address 10.10.23.2 255.255.255.0
interface LoopBack0
ip address 10.10.2.2 255.255.255.255
bgp 200
peer 10.10.3.3 as-number 100
peer 10.10.3.3 ebgp-max-hop 3
peer 10.10.3.3 connect-interface LoopBack0
ipv4-family unicast
undo synchronization
peer 10.10.3.3 enable
ospf 1
area 0.0.0.0
network 10.10.0.0 0.0.255.255
R3:
interface GigabitEthernet2/0/0
ip address 10.10.13.3 255.255.255.0
interface GigabitEthernet2/0/1
ip address 10.10.23.3 255.255.255.0
interface GigabitEthernet2/0/2
ip address 10.10.34.3 255.255.255.0
interface GigabitEthernet2/0/3
ip address 10.10.35.3 255.255.255.0
interface LoopBack0
ip address 10.10.3.3 255.255.255.255
bgp 65001//宣告本端成员AS65001
confederation id 100//宣告联盟AS100
confederation peer-as 65002//宣告联盟内EBGP、对端成员AS65002
peer 10.10.1.1 as-number 65001
peer 10.10.1.1 connect-interface LoopBack0
peer 10.10.2.2 as-number 200
peer 10.10.2.2 ebgp-max-hop 3
peer 10.10.2.2 connect-interface LoopBack0
peer 10.10.5.5 as-number 65002
peer 10.10.5.5 ebgp-max-hop 3
peer 10.10.5.5 connect-interface LoopBack0
ipv4-family unicast
undo synchronization
peer 10.10.1.1 enable
peer 10.10.2.2 enable
peer 10.10.5.5 enable
ospf 1
area 0.0.0.0
network 10.10.0.0 0.0.255.255
R4:
interface GigabitEthernet0/0/0
ip address 10.10.45.4 255.255.255.0
interface LoopBack0
ip address 10.10.4.4 255.255.255.255
bgp 65002
confederation id 100
peer 10.10.5.5 as-number 65002
peer 10.10.5.5 connect-interface LoopBack0
ipv4-family unicast
undo synchronization
peer 10.10.5.5 enable
ospf 1
area 0.0.0.0
network 10.10.0.0 0.0.255.255
R5:
interface GigabitEthernet0/0/0
ip address 10.10.35.5 255.255.255.0
interface GigabitEthernet0/0/1
ip address 10.10.45.5 255.255.255.0
interface LoopBack0
ip address 10.10.5.5 255.255.255.255
bgp 65002
confederation id 100
confederation peer-as 65001
peer 10.10.3.3 as-number 65001
peer 10.10.3.3 ebgp-max-hop 3
peer 10.10.3.3 connect-interface LoopBack0
peer 10.10.4.4 as-number 65002
peer 10.10.4.4 connect-interface LoopBack0
ipv4-family unicast
undo synchronization
peer 10.10.3.3 enable
peer 10.10.4.4 enable
ospf 1
area 0.0.0.0
network 10.10.0.0 0.0.255.255
验证：
R4可以学习到成员AS65001中R1通过BGP宣告路由信息
< R4>dis bgp routing-table
BGP Local router ID is 10.10.4.4
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Total Number of Routes: 1
Network NextHop MED LocPrf PrefVal Path/Ogn
*>i 192.168.1.0 10.10.1.1 0 100 0 (65001)i
R2可以学习到AS100中R1通过BGP宣告路由信息
< R2>dis bgp routing-table
BGP Local router ID is 10.10.2.2
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Total Number of Routes: 1
Network NextHop MED LocPrf PrefVal Path/Ogn
*> 192.168.1.0 10.10.3.3 0 100i