NMT Data Mining & Big Data

大规模路由综合实验

2021-09-17
NMt
RS
     

最近做了一个路由综合实验,记录一下相关配置。

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拓扑图以及需求如下图所示(注:AR10是用作测试的,不是原本拓扑中的设备):

需求解释以及解决方案:

  1. 某企业总公司和分公司运行 BGP 实现路由互通,另外还有办事处运行 RIPv2。总公司和分公司之间通过两条线路相连。企业内有 A 流和 B 流两种流量,如图所示。
    介绍这个网络拓扑的大致的架构。
  2. 按照图示配置 IP 地址,除 R7 外,所有路由配置 Loopback0 口 IP 地址用于 OSPF 的 Router-id 和 IBGP 建立邻居,地址格式为 X.X.X.X/32 ,X 为设备编号
    给设备接口配置IP,并且除了R7之外都要配置环回口,并且用环回口建立IBGP邻居。
  3. 总公司和分公司内部配置 OSPF,仅用于实现 BGP 的 TCP 可达,不允许宣告业务网段 在AS内部配置OSPF,172.16.x.x和192.168.x.x两个业务网段不能宣告,但是在实际构建网络的时候需要宣告。实现效果:





  4. 办事处和总公司之间配置 RIPv2 实现效果:

  5. 适当调整链路 Cost,避免产生等价路由 实现效果:
  6. 总公司和分公司配置 BGP 实现路由互通,总公司在 AS 65001,分公司在 AS 65002,各自 AS 内部使用对等体组建立可靠的 IBGP 全连接,AS 之间使用直连接口建立 EBGP 邻居,总公司和分公司的业务网段宣告在 BGP 中 实现效果:


  7. 为了实现总公司和分公司的流量负载均衡,要求通过修改 AS_path,使 A 流数据经过 R2 和 R4,B 流数据经过 R3 和 R5
    实现效果:
  8. 在 R2 上配置 RIP 和 BGP 的双向引入,要求办事处的 A 流和 B 流都能与总公司互通,但办事处与分公司之间只有 A 流能够互通
    实现效果:
  9. 不允许业务网段出现协议报文,不允许出现不相关的 RIP 协议报文
  10. 随着公司业务发展,后续可能会有其他分公司通过 R2 或 R3 接入总公司;不允许分公司之间互访,所以要求总公司只能对分公司发布属于本 AS 的路由
    实现效果:

相关配置:

AR1:
#
 sysname R1
#
interface GigabitEthernet0/0/0
 ip address 10.0.0.1 255.255.255.252 
 ospf cost 10
#
interface GigabitEthernet0/0/1
 ip address 10.0.0.5 255.255.255.252 
 ospf cost 5
#
interface LoopBack0
 ip address 1.1.1.1 255.255.255.255 
#
interface LoopBack1
 ip address 192.168.0.1 255.255.255.0 
#
interface LoopBack2
 ip address 172.16.0.1 255.255.255.0 
#
bgp 65001
 router-id 1.1.1.1
 group neib internal
 peer neib connect-interface LoopBack0
 peer 2.2.2.2 group neib 
 peer 3.3.3.3 group neib 
 network 172.16.0.0 255.255.255.0 
 network 192.168.0.0 
#
ospf 1 router-id 1.1.1.1 
 area 0.0.0.0 
  network 1.1.1.1 0.0.0.0 
  network 10.0.0.1 0.0.0.0 
  network 10.0.0.5 0.0.0.0 
#
return

AR2:
#
 sysname R2
#
acl number 2000  
 rule 5 deny source 172.16.1.0 0.0.0.255 
 rule 10 permit 
acl number 2001  
 rule 5 deny source 172.16.2.0 0.0.0.255 
 rule 10 permit 
#
interface GigabitEthernet0/0/0
 ip address 10.0.0.2 255.255.255.252 
 ospf cost 10
#
interface GigabitEthernet0/0/1
 ip address 10.0.0.9 255.255.255.252 
#
interface GigabitEthernet0/0/2
 ip address 10.0.0.13 255.255.255.252 
#
interface GigabitEthernet1/0/0
 ip address 10.0.0.33 255.255.255.252 
#
interface LoopBack0
 ip address 2.2.2.2 255.255.255.255 
#
bgp 65001
 router-id 2.2.2.2
 peer 10.0.0.14 as-number 65002 
 group neib internal
 peer neib connect-interface LoopBack0
 peer 1.1.1.1 group neib 
 peer 3.3.3.3 group neib 
 import-route rip 1
 peer 10.0.0.14 filter-policy 2001 export
 peer 10.0.0.14 as-path-filter 1 export 
 peer 10.0.0.14 route-policy as_path import
 peer neib next-hop-local 
#
ospf 1 router-id 2.2.2.2 
 area 0.0.0.0 
  network 2.2.2.2 0.0.0.0 
  network 10.0.0.2 0.0.0.0 
  network 10.0.0.9 0.0.0.0 
#
rip 1
 undo summary
 version 2
 network 10.0.0.0
 silent-interface GigabitEthernet0/0/0
 silent-interface GigabitEthernet0/0/1
 silent-interface GigabitEthernet0/0/2
 filter-policy 2000 export bgp
 import-route bgp permit-ibgp
#
route-policy as_path permit node 10 
 if-match ip-prefix as_path 
 apply as-path 100 additive
#
route-policy as_path permit node 20 
#
ip ip-prefix as_path index 10 permit 172.16.1.0 24
#
ip as-path-filter 1 permit ^$
#
return

AR3:
#
 sysname R3
#
acl number 2001  
 rule 5 deny source 172.16.2.0 0.0.0.255 
 rule 10 permit 
#
interface GigabitEthernet0/0/0
 ip address 10.0.0.6 255.255.255.252 
 ospf cost 5
#
interface GigabitEthernet0/0/1
 ip address 10.0.0.10 255.255.255.252 
#
interface GigabitEthernet0/0/2
 ip address 10.0.0.17 255.255.255.252 
#
interface LoopBack0
 ip address 3.3.3.3 255.255.255.255 
#
bgp 65001
 router-id 3.3.3.3
 peer 10.0.0.18 as-number 65002 
 group neib internal
 peer neib connect-interface LoopBack0
 peer 1.1.1.1 group neib 
 peer 2.2.2.2 group neib 
 peer 10.0.0.18 filter-policy 2001 export
 peer 10.0.0.18 as-path-filter 1 export 
 peer 10.0.0.18 route-policy as_path import
 peer neib next-hop-local
#
ospf 1 router-id 3.3.3.3 
 area 0.0.0.0 
  network 3.3.3.3 0.0.0.0 
  network 10.0.0.6 0.0.0.0 
  network 10.0.0.10 0.0.0.0 
#
route-policy as_path permit node 10 
 if-match ip-prefix as_path 
 apply as-path 100 additive
#
route-policy as_path permit node 20 
#
ip ip-prefix as_path index 10 permit 192.168.1.0 24
#
ip as-path-filter 1 permit ^$
#
return


AR4:
#
 sysname R4
#
interface GigabitEthernet0/0/0
 ip address 10.0.0.14 255.255.255.252 
#
interface GigabitEthernet0/0/1
 ip address 10.0.0.21 255.255.255.252 
#
interface GigabitEthernet0/0/2
 ip address 10.0.0.25 255.255.255.252 
 ospf cost 5
#
interface LoopBack0
 ip address 4.4.4.4 255.255.255.255 
#
bgp 65002
 router-id 4.4.4.4
 peer 10.0.0.13 as-number 65001 
 group neib internal
 peer neib connect-interface LoopBack0
 peer 5.5.5.5 group neib 
 peer 6.6.6.6 group neib 
 peer 10.0.0.13 route-policy as_path import
 peer neib next-hop-local 
#
ospf 1 router-id 4.4.4.4 
 area 0.0.0.0 
  network 4.4.4.4 0.0.0.0 
  network 10.0.0.21 0.0.0.0 
  network 10.0.0.25 0.0.0.0 
#
route-policy as_path permit node 10 
 if-match ip-prefix as_path 
 apply as-path 100 additive
#
route-policy as_path permit node 20 
#
ip ip-prefix as_path index 10 permit 172.16.0.0 24
#
return

AR5:
#
 sysname R5
#
interface GigabitEthernet0/0/0
 ip address 10.0.0.18 255.255.255.252 
#
interface GigabitEthernet0/0/1
 ip address 10.0.0.22 255.255.255.252 
#
interface GigabitEthernet0/0/2
 ip address 10.0.0.29 255.255.255.252 
 ospf cost 10
#
interface LoopBack0
 ip address 5.5.5.5 255.255.255.255 
#
bgp 65002
 router-id 5.5.5.5
 peer 10.0.0.17 as-number 65001 
 group neib internal
 peer neib connect-interface LoopBack0
 peer 4.4.4.4 group neib 
 peer 6.6.6.6 group neib 
 peer 10.0.0.17 route-policy as_path import
 peer neib next-hop-local 
#
ospf 1 router-id 5.5.5.5 
 area 0.0.0.0 
  network 5.5.5.5 0.0.0.0 
  network 10.0.0.22 0.0.0.0 
  network 10.0.0.29 0.0.0.0 
#
route-policy as_path permit node 10 
 if-match ip-prefix as_path 
 apply as-path 100 additive
#
route-policy as_path permit node 20 
#
ip ip-prefix as_path index 10 permit 192.168.0.0 24
#
return


AR6:
#
 sysname R6
#
interface GigabitEthernet0/0/0
 ip address 10.0.0.26 255.255.255.252 
 ospf cost 5
#
interface GigabitEthernet0/0/1
 ip address 10.0.0.30 255.255.255.252 
 ospf cost 10
#
interface LoopBack0
 ip address 6.6.6.6 255.255.255.255 
#
interface LoopBack1
 ip address 192.168.1.1 255.255.255.0 
#
interface LoopBack2
 ip address 172.16.1.1 255.255.255.0 
#
bgp 65002
 router-id 6.6.6.6
 group neib internal
 peer neib connect-interface LoopBack0
 peer 4.4.4.4 group neib 
 peer 5.5.5.5 group neib
 network 172.16.1.0 255.255.255.0 
 network 192.168.1.0 
#
ospf 1 router-id 6.6.6.6 
 area 0.0.0.0 
  network 6.6.6.6 0.0.0.0 
  network 10.0.0.26 0.0.0.0 
  network 10.0.0.30 0.0.0.0 
#
return


AR7:
#
 sysname R7
#
interface GigabitEthernet0/0/0
 ip address 10.0.0.34 255.255.255.252 
#
interface LoopBack0
 ip address 192.168.2.1 255.255.255.0 
#
interface LoopBack1
 ip address 172.16.2.1 255.255.255.0 
#
rip 1
 undo summary
 version 2
 network 10.0.0.0
 network 192.168.2.0
 network 172.16.0.0
#
return

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