实验 8X02 - CCNA Exam Advanced @David

• CE 和 PE 之间可以随便跑什么协议
• 重点
  • 不同协议时，PE的设置方式
  • PE上需要在BGP 的address-family 中，对其他来源协议做重分布

• PE1 配置

R5_PE1(config-router)#do show run
Building configuration...
Current configuration : 4600 bytes
!
! Last configuration change at 08:24:17 UTC Sat Aug 27 2022
!
version 15.9
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R5_PE1
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
!
!
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
!
!
!
!
!
no ip icmp rate-limit unreachable
!
!
!
ip vrf BLUE
 rd 65000:100
 route-target export 65000:111
 route-target import 65000:111
!
ip vrf GREEN
 rd 65000:200
 route-target export 65000:200
 route-target import 65000:200
!
ip vrf PURPLE
 rd 65000:300
 route-target export 65000:300
 route-target import 65000:300
!
!
!
!
no ip domain lookup
ip cef
no ipv6 cef
!
multilink bundle-name authenticated
no mpls ip propagate-ttl 
!
!
!
!
!
redundancy
!
no cdp log mismatch duplex
!
ip tcp synwait-time 5
!
!
!
interface Loopback0
 ip address 5.5.5.5 255.255.255.255
!
interface GigabitEthernet0/0
 ip vrf forwarding BLUE
 ip address 172.16.1.1 255.255.255.252
 duplex auto
 speed auto
 media-type rj45
!
interface GigabitEthernet0/1
 ip address 57.1.1.5 255.255.255.0
 duplex auto
 speed auto
 media-type rj45
 mpls ip
!
interface GigabitEthernet0/2
 ip vrf forwarding GREEN
 ip address 172.16.1.1 255.255.255.252
 duplex auto
 speed auto
 media-type rj45
!
interface GigabitEthernet0/3
 ip vrf forwarding PURPLE
 ip address 172.16.1.1 255.255.255.252
 duplex auto
 speed auto
 media-type rj45
!
!
router eigrp MY_VRF_EIGRP
 !
 address-family ipv4 unicast vrf PURPLE autonomous-system 300
  !
  topology base
  exit-af-topology
  network 172.16.1.1 0.0.0.0
 exit-address-family
!
router ospf 200 vrf GREEN
 redistribute bgp 65000 subnets
 network 172.16.1.1 0.0.0.0 area 0
!
router ospf 100
 network 5.5.5.5 0.0.0.0 area 0
 network 57.1.1.5 0.0.0.0 area 0
!
router bgp 65000
 bgp log-neighbor-changes
 no bgp default ipv4-unicast
 neighbor 6.6.6.6 remote-as 65000
 neighbor 6.6.6.6 update-source Loopback0
 !
 address-family ipv4
 exit-address-family
 !        
 address-family vpnv4
  neighbor 6.6.6.6 activate
  neighbor 6.6.6.6 send-community extended
 exit-address-family
 !
 address-family ipv4 vrf BLUE
  neighbor 172.16.1.2 remote-as 65001
  neighbor 172.16.1.2 activate
 exit-address-family
 !
 address-family ipv4 vrf GREEN
  redistribute ospf 200
 exit-address-family
 !
 address-family ipv4 vrf PURPLE
  redistribute eigrp 300
 exit-address-family
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
ipv6 ioam timestamp
!
!
!
control-plane
!
banner exec ^C
line con 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line aux 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line vty 0 4
 login
 transport input none
!
no scheduler allocate
!
end

• PE1 上的BGP 路由
  • BLUE 是通过eBGP 学习到的
  • GREEN 是OSPF 重分布进来的，包括在PE2上的重分布
  • PURPLE 是通过EIGRP 重分布进来的

• 终端可以学到对应终端路由

• 注意在PE1 和 CE上的路由类型以及AD、Metric变化
  • PE 上的类型是B
  • CE 上是原协议类型