如何利用VRF在单台路由器上创建多份路由表

　　接下来我们要做的就是为每一个接口配备一份VRF：

interface FastEthernet0/0.1

 encapsulation dot1Q 201

 ip vrf forwarding POD1

 ip address 192.168.1.1 255.255.255.0

!

interface FastEthernet0/0.2

 encapsulation dot1Q 202

 ip vrf forwarding POD2

 ip address 192.168.1.1 255.255.255.0

!

interface FastEthernet0/0.3

 encapsulation dot1Q 203

 ip vrf forwarding POD3

 ip address 192.168.1.1 255.255.255.0

!

interface FastEthernet0/0.4

 encapsulation dot1Q 204

 ip vrf forwarding POD4

 ip address 192.168.1.1 255.255.255.0

!

interface FastEthernet0/0.5

 encapsulation dot1Q 205

 ip vrf forwarding POD5

 ip address 192.168.1.1 255.255.255.0

!

interface FastEthernet0/0.6

 encapsulation dot1Q 206

 ip vrf forwarding POD6

 ip address 192.168.1.1 255.255.255.0

!

interface FastEthernet0/0.7

 encapsulation dot1Q 207

 ip vrf forwarding POD7

 ip address 192.168.1.1 255.255.255.0

!

interface FastEthernet0/0.8

 encapsulation dot1Q 208

 ip vrf forwarding POD8

 ip address 192.168.1.1 255.255.255.0

!

!

interface FastEthernet0/1.1

 encapsulation dot1Q 211

 ip vrf forwarding POD1

 ip address 172.26.26.53 255.255.255.0 secondary

 ip address 172.26.26.1 255.255.255.0

!

interface FastEthernet0/1.2

 encapsulation dot1Q 212

 ip vrf forwarding POD2

 ip address 172.26.26.53 255.255.255.0 secondary

 ip address 172.26.26.1 255.255.255.0

!

interface FastEthernet0/1.3

 encapsulation dot1Q 213

 ip vrf forwarding POD3

 ip address 172.26.26.53 255.255.255.0 secondary

 ip address 172.26.26.1 255.255.255.0

!

interface FastEthernet0/1.4

 encapsulation dot1Q 214

 ip vrf forwarding POD4

 ip address 172.26.26.53 255.255.255.0 secondary

 ip address 172.26.26.1 255.255.255.0

!

interface FastEthernet0/1.5

 encapsulation dot1Q 215

 ip vrf forwarding POD5

 ip address 172.26.26.53 255.255.255.0 secondary

 ip address 172.26.26.1 255.255.255.0

!

interface FastEthernet0/1.6

 encapsulation dot1Q 216

 ip vrf forwarding POD6

 ip address 172.26.26.53 255.255.255.0 secondary

 ip address 172.26.26.1 255.255.255.0

!

interface FastEthernet0/1.7

 encapsulation dot1Q 217

 ip vrf forwarding POD7

 ip address 172.26.26.53 255.255.255.0 secondary

 ip address 172.26.26.1 255.255.255.0

!

interface FastEthernet0/1.8

 encapsulation dot1Q 218

 ip vrf forwarding POD8

 ip address 172.26.26.53 255.255.255.0 secondary

 ip address 172.26.26.1 255.255.255.0

　　为了确保路由现在都是独立的，我们可以选择从VRF的角度查看路由表。

　　首先就是第一部分：

BBR#show ip route vrf POD1

Routing Table: POD1

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

       E1 - OSPF external type 1, E2 - OSPF external type 2

       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

       ia - IS-IS inter area, * - candidate default, U - per-user static route

       o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

     172.26.0.0/24 is subnetted, 1 subnets

C       172.26.26.0 is directly connected, FastEthernet0/1.1

     10.0.0.0/24 is subnetted, 2 subnets

S       10.0.1.0 [1/0] via 192.168.1.2

C       10.0.100.0 is directly connected, Loopback201

C    192.168.1.0/24 is directly connected, FastEthernet0/0.1

BBR#

　　为了确认到每个接口对应的VRF都是什么，我们现在可以利用show ip vrf brief命令来获取相关信息。

BBR#sh ip vrf brief

  Name                             Default RD          Interfaces

  POD1                             1:1                 Lo201

                                                       Fa0/0.1

                                                       Fa0/1.1

  POD2                             2:2                 Lo202

                                                       Fa0/0.2

                                                       Fa0/1.2

  POD3                             3:3                 Lo203

                                                       Fa0/0.3

                                                       Fa0/1.3

  POD4                             4:4                 Lo204

                                                       Fa0/0.4

                                                       Fa0/1.4

  POD5                             5:5                 Lo205

                                                       Fa0/0.5

                                                       Fa0/1.5

  POD6                             6:6                 Lo206

                                                       Fa0/0.6

                                                       Fa0/1.6

  POD7                             7:7                 Lo207

                                                       Fa0/0.7

                                                       Fa0/1.7

  POD8                             8:8                 Lo208

                                                       Fa0/0.8

                                                       Fa0/1.8

BBR#

　　当然，还有很多其它命令可以用来验证VRF;但正如我们所看到的，只有这样才能将路由器用VRF分拆为八个部分。在以后的文章中，我还将会对如何利用VRF对IP安全协议进行相同步骤的设置进行介绍。