付费专栏：IPv6组网实战从入门到精通

本举例介绍默认路由器优先级和路由信息的配置过程。

组网需求

如图1所示，PC通过SwitchA分别与RouterA、RouterB相连。PC根据报文的目的地址选择合适的转发路由器。

图1 配置默认路由器优先级和路由信息组网图

配置注意事项

PC支持RFC 4191，能够学习RA（Router Advertisement）报文中的默认路由器优先级和路由信息。

配置思路

IPv6地址选择的配置思路如下：

在RouterA、RouterB上配置默认路由器优先级和路由信息

数据准备

为完成此配置举例，需要准备如下数据：

RouterA、RouterB接口的IPv6地址

默认路由器优先级和路由信息

操作步骤

1. 默认路由器优先级和路由信息

# 配置RouterA。

<HUAWEI> system-view

[HUAWEI] sysname RouterA

[RouterA] ipv6

[RouterA] interface gigabitethernet 1/0/0

[RouterA-GigabitEthernet1/0/0] undo shutdown

[RouterA-GigabitEthernet1/0/0] ipv6 enable

[RouterA-GigabitEthernet1/0/0] undo ipv6 nd ra halt

[RouterA-GigabitEthernet1/0/0] ipv6 address fe80::1 link-local

[RouterA-GigabitEthernet1/0/0] ipv6 address 2001:db8::2/64

[RouterA-GigabitEthernet1/0/0] ipv6 nd ra preference high

[RouterA-GigabitEthernet1/0/0] ipv6 nd ra route-information 2001:db8:: 64 lifetime 2000 preference high

[RouterA-GigabitEthernet1/0/0] quit

# 配置RouterB。

<HUAWEI> system-view

[HUAWEI] sysname RouterB

[RouterB] ipv6

[RouterB] interface gigabitethernet 1/0/0

[RouterB-GigabitEthernet1/0/0] undo shutdown

[RouterB-GigabitEthernet1/0/0] ipv6 enable

[RouterB-GigabitEthernet1/0/0] undo ipv6 nd ra halt

[RouterB-GigabitEthernet1/0/0] ipv6 address fe80::2 link-local

[RouterB-GigabitEthernet1/0/0] ipv6 address 2001:db8:1::2/64

[RouterB-GigabitEthernet1/0/0] ipv6 nd ra preference low

[RouterB-GigabitEthernet1/0/0] ipv6 nd ra route-information 2001:db8:1:: 64 lifetime 2000 preference high

[RouterB-GigabitEthernet1/0/0] quit

2. 验证配置结果

# 查看PC的配置情况，可以看到其缺省网关是RouterA。

C:\Documents and Settings\Administrator>ipconfig /all

Ethernet adapter 1:

Connection-specific DNS Suffix . :

Description . . . . . . . . . . . : Realtek RTL8139 Family PCI Fast Ethe

rnet NIC #2

Physical Address. . . . . . . . . : 00-E0-4C-77-A1-B6

Dhcp Enabled. . . . . . . . . . . : No

IP Address. . . . . . . . . . . . : 10.1.1.33

Subnet Mask . . . . . . . . . . . : 255.0.0.0

IP Address. . . . . . . . . . . . : 2001:db8::1

IP Address. . . . . . . . . . . . : 2001:db8:1::1

IP Address. . . . . . . . . . . . : fe80::2e0:4cff:fe77:a1b6%6

Default Gateway . . . . . . . . . : 2001:db8::2

DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1

fec0:0:0:ffff::2%1

fec0:0:0:ffff::3%1

# 查看PC的路由表，可以看到其学习到的路由信息。

C:\Documents and Settings\Administrator>netsh

netsh>interface ipv6

netsh interface ipv6>show route

Querying active state...

Publish Type Met Prefix Idx Gateway/Interface Name

------- -------- ---- ------------------------ --- ---------------------no Manual 3 2001:db8:1::/64 4 fe80::2

no Manual 3 2001:db8::/64 4 fe80::1

配置文件

RouterA的配置文件

#

sysname RouterA

#

ipv6

#

interface GigabitEthernet1/0/0

undo shutdown

ipv6 enable

ipv6 address 2001:db8::2/64

ipv6 address FE80::1 link-local

ipv6 nd ra preference high

ipv6 nd ra route-information 2001:db8:: 64 lifetime 2000 preference high

undo ipv6 nd ra halt

#

return

RouterB的配置文件

#

sysname RouterB

#

ipv6

#

interface GigabitEthernet1/0/0

undo shutdown

ipv6 enable

ipv6 address 2001:db8:1::2/64

ipv6 address FE80::2 link-local

ipv6 nd ra preference low

ipv6 nd ra route-information 2001:db8:1:: 64 lifetime 2000 preference high

undo ipv6 nd ra halt

#

return