绝对的重点,绝对的考点。知识体系差异不大,配置区别比较大
简要配置方案:

简要配置方案:

1

标签分发机制:

LDP-静态、IGP,外层

SW2R4

44.1.1.122.1.1.1BGP的更新源或者是下一跳)

2

***v496位长的地址族:RD+IPv4,批量的承载***v4的路由)

router bgp 200

 no bgp default ipv4-unicast--关掉默认的只承载ipv4 单播的能力

 bgp log-neighbor-changes

 neighbor 44.1.1.1 remote-as 200

 neighbor 44.1.1.1 update-source Loopback0

 !

 address-family ***v4

  neighbor 44.1.1.1 activate--激活相应的地址族

  neighbor 44.1.1.1 send-community extended

router bgp 200

 address-family ***v4 unicast

 !

 neighbor 22.1.1.1

  remote-as 200

  update-source Loopback0

  address-family ***v4 unicast

   route-reflector-client

  !

3

VRF-虚拟路由转发,客户的路由

vrf B

 address-family ipv4 unicast

  import route-target

   200:200

  !

  export route-target

   200:200

 vrf B

  rd 200:200

  address-family ipv4 unicast

   network 144.1.1.1/32

4PECE的路由,双向重分布

router ospf 100 vrf B

 log-adjacency-changes

 redistribute bgp 200 subnets

!

router bgp 200

 

 !

 address-family ipv4 vrf B

  redistribute ospf 100 vrf B

  no synchronization

 exit-address-family


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