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mpls范例

2019-11-04 22:43:17
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  小弟才疏学浅..把之前公司学到的一点东西拿出来献丑
  
  以下是在pe router一定要有的设定
  ip vrf aaa ---aaa就是客户名称
  rd 1234:1 ---rd是mbgp在交换routing用的
  route-target eXPort 1234:1
  route-target import 1234:1
  ip cef ---一定要下..不下打死不会通
  
  interface FastEthernet1/0
  ip address xxxx
  full-duplex
  tag-switching mtu 1530 ----接到p router一定要下此行..因为加了tag mtu 会变大
  tag-switching ip ----让interface知道上面有跑加了tag 的封包
  
  interface serial 0/0
  ip address xxxx
  ip vrf fowarding aaa ---上下车的interface要加上tag要打此行
  
  --以下都是再定义mbgp..所有mpls的routing都是用mbgp交换的---
  router bgp 1234
  no synchronization
  no bgp default ipv4-unicast
  bgp log-neighbor-changes
  neighbor MPLS-PEER peer-group ---MPLS-PEER这个字符串是自订的名称
  neighbor MPLS-PEER remote-as 1234
  neighbor MPLS-PEER update-source Loopback0
  neighbor MPLS-PEER activate
  neighbor 1.1.1.1peer-group MPLS-PEER ....由于是要靠ibgp交换.所以要fully mesh...有几颗pe就要输入几颗pe的 ip
  neighbor 2.2.2.2 peer-group MPLS-PEER
  neighbor 3.3.3.3 peer-group MPLS-PEER
  neighbor 4.4.4.4 peer-group MPLS-PEER
  no auto-summary
  
  address-family ipv4 vrf aaa
  redistribute connected
  redistribute static
  no auto-summary
  no synchronization
  exit-address-family
  
  address-family vpnv4
  neighbor 1.1.1.1 activate
  neighbor 1.1.1.1 send-community extended
  neighbor 2.2.2.2 activate
  neighbor 2.2.2.2 send-community extended
  neighbor 3.3.3.3 activate
  neighbor 3.3.3.3 send-community extended
  neighbor 4.4.4.4 activate
  neighbor 4.4.4.4 send-community extended
  
  ip route vrf aaa 192.168.181.0 255.255.255.0 192.168.1.6 ---要下车的default route..在此范例中要往serial 0/0丢的才对
  
  至于p router...上面跑的就只有ospf啦..

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