DHCPv6服务器可以为已经具有IPv6地址/前缀的客户端分配其他网络配置参数,该过程称为DHCPv6无状态配置。
DHCPv6客户端通过地址无状态自动配置功能成功获取IPv6地址后,如果接收到的RA(Router Advertisement,路由器通告)报文中M标志位(Managed address configuration flag,被管理地址配置标志位)为0、O标志位(Other stateful configuration flag,其他配置标志位)为1,则DHCPv6客户端会自动启动DHCPv6无状态配置功能,以获取除地址/前缀外的其他网络配置参数
Client配置:
interface GigabitEthernet0/0
port link-mode route
combo enable copper
ipv6 address auto
server配置:
interface GigabitEthernet0/0
port link-mode route
combo enable copper
ipv6 address 1::1/64
ipv6 nd autoconfig other-flag
undo ipv6 nd ra halt
#
ipv6 dhcp pool 1
dns-server 3::3
domain-name test
结果显示:
[client]display ipv6 dhcp client interface g0/0
GigabitEthernet0/0:
Type: Stateless client
State: OPEN
Client DUID: 00030001b244d8b30100
Preferred server:
Reachable via address: FE80::B044:DFFF:FE99:205
Server DUID: 00030001b244df990200
DNS server addresses:
3::3
Domain name:
test
[client]display ipv6 interface brief
*down: administratively down
(s): spoofing
Interface Physical Protocol IPv6 Address
GigabitEthernet0/0 up up 1::B044:D8FF:FEB3:105
测试连通性:
[client]ping ipv6 1::1
Ping6(56 data bytes) 1::B044:D8FF:FEB3:105 --> 1::1, press CTRL_C to break
56 bytes from 1::1, icmp_seq=0 hlim=64 time=2.000 ms
56 bytes from 1::1, icmp_seq=1 hlim=64 time=1.000 ms
56 bytes from 1::1, icmp_seq=2 hlim=64 time=2.000 ms
56 bytes from 1::1, icmp_seq=3 hlim=64 time=1.000 ms
56 bytes from 1::1, icmp_seq=4 hlim=64 time=1.000 ms
1、MSR(V7)设备作为客户端,既可以使用有状态方式,也可以采用无状态方式
2、若使用windows作为DHCPv6客户端,则可能会出现DNS地址无法显示,以及无法ping同无状态地址的问题,这个是客户端问题导致
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