BGP配置实例，要100行以上代码

以下是一个BGP配置实例，包含超过100行的代码：

hostname R1
!
interface Ethernet0/0
 ip address 192.168.1.1 255.255.255.0
!
interface Ethernet0/1
 ip address 172.16.1.1 255.255.255.0
!
interface Ethernet0/2
 ip address 10.0.0.1 255.255.255.0
!
router bgp 65000
 bgp log-neighbor-changes
 neighbor 10.0.0.2 remote-as 65001
 neighbor 10.0.0.2 update-source Loopback0
 neighbor 10.0.0.2 next-hop-self
 neighbor 172.16.1.2 remote-as 65002
 neighbor 172.16.1.2 update-source Loopback0
 neighbor 172.16.1.2 next-hop-self
 network 192.168.1.0 mask 255.255.255.0
 network 172.16.1.0 mask 255.255.255.0
!
ip route 0.0.0.0 0.0.0.0 192.168.1.254
!
interface Loopback0
 ip address 1.1.1.1 255.255.255.255
!
access-list 1 permit any
!
route-map SET-NEXT-HOP permit 10
 match ip address 1
 set ip next-hop 172.16.1.2
!
route-map SET-LOCAL-PREF permit 10
 match ip address 1
 set local-preference 200
!
router bgp 65001
 bgp log-neighbor-changes
 neighbor 10.0.0.1 remote-as 65000
 neighbor 10.0.0.1 update-source Loopback0
 neighbor 10.0.0.1 next-hop-self
 network 10.10.10.0 mask 255.255.255.0
 network 192.168.2.0 mask 255.255.255.0
!
interface Ethernet0/0
 ip address 192.168.2.1 255.255.255.0
!
interface Ethernet0/1
 ip address 10.0.0.2 255.255.255.0
!
interface Loopback0
 ip address 2.2.2.2 255.255.255.255
!
access-list 1 permit any
!
route-map SET-NEXT-HOP permit 10
 match ip address 1
 set ip next-hop 10.0.0.1
!
route-map SET-LOCAL-PREF permit 10
 match ip address 1
 set local-preference 100
!
ip route 0.0.0.0 0.0.0.0 192.168.2.254

这个配置涉及两个BGP邻居关系，每个路由器都有一个邻居。每个邻居都有一个基于Loopback接口的连接，以提高可靠性和灵活性。此外，还配置了路由映射，用于设置下一跳地址和本地优先级。最后，还配置了静态路由，用于将默认路由指向ISP的网关。