三台路由器互联，A与B之间运行OSPF,B与C之间运行EBGP,怎么在EBGP中引入ospf，实现互通。

sysname RA
#
interface Ethernet0/0/0
ip address 23.201.100.1 255.255.255.0
#
interface LoopBack0
ip address 17.0.0.1 255.255.255.255
#
ospf 100
area 0.0.0.0
network 23.201.100.0 0.0.0.255
network 17.0.0.1 0.0.0.0
return

sysname RB
#
interface Ethernet0/0/0
ip address 23.201.100.2 255.255.255.0
#
interface Ethernet0/0/1
ip address 53.120.12.1 255.255.255.0
#
interface LoopBack0
ip address 10.10.10.10 255.255.255.255
#
bgp 100
router-id 10.10.10.10
peer 53.120.12.2 as-number 200
group ex200 external
#
ipv4-family unicast
undo synchronization
import-route ospf 100
peer 53.120.12.2 enable
peer ex200 enable
#
ospf 100
area 0.0.0.0
network 23.201.100.0 0.0.0.255
return

sysname RC
#
interface Ethernet0/0/0
ip address 53.120.12.2 255.255.255.0
#
bgp 200
peer 53.120.12.1 as-number 100
group ex100 external
#
ipv4-family unicast
undo synchronization
peer 53.120.12.1 enable
peer ex100 enable
return

开启ospf协议

再看看别人怎么说的。

A与B是一个AS，C是一个AS，A、B间做IBGP，C与B做EBGP。

B上在BGP进程下，做redis ospf 100 subnets