一、组网需求
Device A和Device B相连，Device A与Device B相连的接口GigabitEthernet 0/1已配置了IPv6地址，现需要在Device B上配置无状态自动获取IPv6地址，以实现两台设备可以通过IPv6地址进行通信。
二、组网图
三、配置要点
●在Device A上配置IPv6地址。
● 在Device B上配置无状态自动获取IPv6地址。
四、 配置步骤
(1) 配置Device A
# 配置接口GigabitEthernet 0/1的IPv6地址，并允许在该接口上发送RA报文。
DeviceA> enable
DeviceA# configure terminal
DeviceA(config)# interface gigabitethernet 0/1
DeviceA(config-if-GigabitEthernet 0/1)# ipv6 address 2000::1/64
DeviceA(config-if-GigabitEthernet 0/1)# no ipv6 nd suppress-ra
DeviceA(config-if-GigabitEthernet 0/1)# exit
(2) 配置Device B
DeviceB> enable
DeviceB# configure terminal
DeviceB(config)# interface gigabitethernet 0/1
DeviceB(config-if-GigabitEthernet 0/1)# ipv6 address autoconfig
五、 验证配置结果
# 在Device B上使用show ipv6 interface命令可以看到接口自动获取到IPv6地址。
DeviceB# show ipv6 interface
interface GigabitEthernet 0/1 is Up, ifindex: 2, vrf_id 0
address(es):
Mac Address: 00:50:56:b0:2f:50
INET6: FE80::250:56FF:FEB0:2F50 , subnet is FE80::/64
INET6: 2000::250:56FF:FEB0:2F50 [ PRE ], subnet is 2000::/64
valid lifetime 2591906 sec, preferred lifetime 604706 sec
Joined group address(es):
FF01::1
FF02::1
FF02::2
FF02::1:FF00:0
FF02::1:FFB0:2F50
MTU is 1500 bytes
ICMP error messages limited to one every 100 milliseconds
ICMP redirects are enabled
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
ND stale time is 3600 seconds
ND advertised reachable time is 0 milliseconds
ND retransmit interval is 1000 milliseconds
ND advertised retransmit interval is 0 milliseconds
ND router advertisements are sent every 600 seconds<480–720>
ND router advertisements live for 1800 seconds
Hosts use stateless autoconfig for addresses.
# 在Device A上使用Ping测试和Device B的互通性。
DeviceA# ping ipv6 2000::250:56FF:FEB0:2F50
Sending 5, 100-byte ICMP Echoes to 2000::250:56ff:feb0:2f50, timeout is 2 seconds:
< press Ctrl+C to break >
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/13/63 ms.
# 在Device B上使用Ping测试和Device A的互通性。
DeviceAB# ping ipv6 2000::1
Sending 5, 100-byte ICMP Echoes to 2000::1, timeout is 2 seconds:
< press Ctrl+C to break >
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms.
六、 配置文件
●Device A的配置文件
hostname DeviceA
!
interface gigabitEthernet 0/1
ipv6 enable
ipv6 address 2000::1/64
no ipv6 nd suppress-ra
!
●Device B的配置文件
hostname DeviceB
!
interface gigabitEthernet 0/1
ipv6 address autoconfig
!