华为vrf配置实例,华为vrf配置实例详解

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session 1 mpls-vpn华为

配置步骤思路如下:

1、客户CE网络配置路由协议并宣告内网

2、ISP的PE与P之间配置IGP路由协议保证路由连通

3、ISP的PE针对每一个客户配置一个VRF虚拟路由器,在华为里面叫做vpn instance实例

4、ISP的客户的site所连接的PE之间要创建MP-BGPvpnv4连接,用于传输VRF路由和RT属性

5、PE之间有了MP-BGP_vpn路由后,要把PE上的客户的VRF中的路由重分布到MP-BGP中传输到对端PE

6、PE之间的MP-BGP路由中有了客户的VRF的路由后,PE之间的VRF可以通信,但是客户的CE路由器不知道VRF路由,所以需要在PE上将MP-BGP的路由重分布到客户所使用的协议中去(在PE上配置),让客户的CE能够从PE上学习到VPN的路由条目。达到两端site通信的目的。

配置实例和拓扑:本拓扑中只有一个客户分别有两个site,需要让客户的site之间进行通信,使用mpls-vpn

华为vrf配置实例,华为vrf配置实例详解(1)

第一步:客户CE设备配置路由,本例我采用静态

左边site1的CE1

interface GigabitEthernet0/0/0

ip address 12.1.1.1 255.255.255.0

#

interface GigabitEthernet0/0/1

ip address 192.168.1.10 255.255.255.0

#

interface LoopBack0

ip address 1.1.1.1 255.255.255.255

#

ip route-static 0.0.0.0 0.0.0.0 12.1.1.2

#

右边site2的CE2

interface GigabitEthernet0/0/0

ip address 45.1.1.5 255.255.255.0

#

interface GigabitEthernet0/0/1

ip address 192.168.2.30 255.255.255.0

#

interface LoopBack0

ip address 5.5.5.5 255.255.255.255

#

ip route-static 0.0.0.0 0.0.0.0 45.1.1.4

#

CE端什么都没有,只有客户自己的路由和一条到达ISP的默认路由

第二步:ISP内部的PE1-P-PE2之间使用IGP连通,并配置MPLS互通

左边PE1的配置

lsp-trigger all //LSP的触发策略:all代表所有静态路由和IGP路由项触发建立LSP

interface GigabitEthernet0/0/0

ip address 23.1.1.2 255.255.255.0

mpls

mpls ldp

#

interface GigabitEthernet0/0/1

ip binding vpn-instance vpn1 //物理接口划分到vpn-instanc中

ip address 12.1.1.2 255.255.255.0

#

ospf 1 router-id 2.2.2.2

area 0.0.0.0

network 23.1.1.2 0.0.0.0

#

interface LoopBack0

ip address 2.2.2.2 255.255.255.255

ospf enable 1 area 0.0.0.0

#

中间的P路由器的配置

lsp-trigger all

interface GigabitEthernet0/0/0

ip address 23.1.1.3 255.255.255.0

mpls

mpls ldp

#

interface GigabitEthernet0/0/1

ip address 34.1.1.3 255.255.255.0

mpls

mpls ldp

#

interface LoopBack0

ip address 3.3.3.3 255.255.255.255

ospf enable 1 area 0.0.0.0

#

ospf 1 router-id 3.3.3.3

area 0.0.0.0

network 23.1.1.3 0.0.0.0

network 34.1.1.3 0.0.0.0

#

右边PE2的配置

lsp-trigger all

interface GigabitEthernet0/0/0

ip address 34.1.1.4 255.255.255.0

mpls

mpls ldp

#

interface GigabitEthernet0/0/1

ip binding vpn-instance vpn1

ip address 45.1.1.4 255.255.255.0

#

ospf 1 router-id 4.4.4.4

area 0.0.0.0

network 34.1.1.4 0.0.0.0

#

interface LoopBack0

ip address 4.4.4.4 255.255.255.255

ospf enable 1 area 0.0.0.0

#

第三步:在PE配置针对于每个客户的vrf虚拟路由表,在华为中是vpan-instance实例,并定义RD和RT

左边PE1

ip vpn-instance 1

#

ip vpn-instance vpn1

ipv4-family

route-distinguisher 1:1

vpn-target 1:1 export-extcommunity

vpn-target 1:1 import-extcommunity

#

右边PE2

ip vpn-instance vpn1

ipv4-family

route-distinguisher 1:1

vpn-target 1:1 export-extcommunity

vpn-target 1:1 import-extcommunity

#

第四步:PE之间创建vpnv4连接,用于相互传递本端vpn-instance中的客户路由

左边PE1的配置

bgp 1

router-id 2.2.2.2

peer 4.4.4.4 as-number 1

peer 4.4.4.4 connect-interface LoopBack0

#

ipv4-family unicast

undo synchronization

undo peer 4.4.4.4 enable

#

ipv4-family vpnv4

policy vpn-target

peer 4.4.4.4 enable

#

ipv4-family vpn-instance vpn1

import-route static

#

右边PE2的配置

bgp 1

router-id 4.4.4.4

peer 2.2.2.2 as-number 1

peer 2.2.2.2 connect-interface LoopBack0

#

ipv4-family unicast

undo synchronization

undo peer 2.2.2.2 enable

#

ipv4-family vpnv4

policy vpn-target

peer 2.2.2.2 enable

#

ipv4-family vpn-instance vpn1

import-route static

#

可以用<PE1>display bgp vpnv4 all peer 查看vpnv4是否成功

BGP local router ID : 2.2.2.2

Local AS number : 1

Total number of peers : 1 Peers in established state : 1

Peer V AS MsgRcvd MsgSent OutQ Up/Down State Pre

fRcv

4.4.4.4 4 1 212 215 0 03:29:28 Established

1

<PE1>

第五步:mpls的vpnv4连接建立后,需要把客户网络的路由通过MP-BGP传递到对端的PE中去形成vpn路由,因为这个时候在PE的vpn路由表中还没有客户的路由条目,可以使用<PE1>display ip routing-table vpn-instance vpn1 命令查看vpn实例vpn1中的路由条目,所以这个时候PE1的vpn实例中并没有CE1的路由,所以无法通过vpn传递给PE2设备,所以CE1和CE2设备就无法通信。现在需要想办法在PE1的vrf表中添加到达192.168.1.0/24的路由,可以使用静态路由,也可以使用动态路由(使用动态路由,必须PE和CE都要配置相同的IGP路由),本例中使用静态路由添加:

在PE1中:ip route-static vpn-instance vpn1 192.168.1.0 255.255.255.0 12.1.1.1 添加到vrf表

在PE1中查看普通路由和vrf(vpn-instance)中的路由:

<PE1>display ip routing-table 普通路由表

Route Flags: R - relay, D - download to fib

------------------------------------------------------------------------------

Routing Tables: Public

Destinations : 11 Routes : 11

Destination/Mask Proto Pre Cost Flags NextHop Interface

2.2.2.2/32 Direct 0 0 D 127.0.0.1 LoopBack0

3.3.3.3/32 OSPF 10 1 D 23.1.1.3 GigabitEthernet

0/0/0

4.4.4.4/32 OSPF 10 2 D 23.1.1.3 GigabitEthernet

0/0/0

23.1.1.0/24 Direct 0 0 D 23.1.1.2 GigabitEthernet

0/0/0

23.1.1.2/32 Direct 0 0 D 127.0.0.1 GigabitEthernet

0/0/0

23.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet

0/0/0

34.1.1.0/24 OSPF 10 2 D 23.1.1.3 GigabitEthernet

0/0/0

127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0

127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0

127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

<PE1>display ip routing-table vpn-instance vpn1 vrf路由表

Route Flags: R - relay, D - download to fib

------------------------------------------------------------------------------

Routing Tables: vpn1

Destinations : 6 Routes : 6

Destination/Mask Proto Pre Cost Flags NextHop Interface

12.1.1.0/24 Direct 0 0 D 12.1.1.2 GigabitEthernet

0/0/1

12.1.1.2/32 Direct 0 0 D 127.0.0.1 GigabitEthernet

0/0/1

12.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet

0/0/1

192.168.1.0/24 Static 60 0 RD 12.1.1.1 GigabitEthernet

0/0/1

192.168.2.0/24 IBGP 255 0 RD 4.4.4.4 GigabitEthernet

0/0/0

255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

<PE1>

同理PE2也一样,需要:ip route-static vpn-instance vpn1 192.168.2.0 255.255.255.0 45.1.1.5 添加到达192.168.2.0/24的路由到vrf中

完成后,测试PC1与PC3的通信

PC1>ping 192.168.2.100

Ping 192.168.2.100: 32 data bytes, Press Ctrl_C to break

Request timeout!

From 192.168.2.100: bytes=32 seq=2 ttl=123 time=31 ms

From 192.168.2.100: bytes=32 seq=3 ttl=123 time=31 ms

From 192.168.2.100: bytes=32 seq=4 ttl=123 time=31 ms

From 192.168.2.100: bytes=32 seq=5 ttl=123 time=47 ms

--- 192.168.2.100 ping statistics ---

5 packet(s) transmitted

4 packet(s) received

20.00% packet loss

round-trip min/avg/max = 0/35/47 ms

PC1>

PC1>tracert 192.168.2.100

traceroute to 192.168.2.100, 8 hops max

(ICMP), press Ctrl C to stop

1 192.168.1.10 16 ms 15 ms 16 ms

2 12.1.1.2 16 ms 15 ms 31 ms

3 23.1.1.3 16 ms 31 ms 31 ms

4 45.1.1.4 32 ms 31 ms 31 ms

5 45.1.1.5 47 ms 31 ms 47 ms

6 192.168.2.100 31 ms 31 ms 16 ms

PC1>

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原文链接:https://blog.csdn.net/alone_map/article/details/52252086

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