终端地址获取配置方式依赖于RA报文中的Flags标记位置位情况来定
地址自动配置
1. 终端启动后,向链路内所有路由器(目的地址为:FF02::2)发起RS(Router Solicitation)
2. 链路内(与IPv4子网概念相同)的路由器(村长)收到请求后,发送RA(Router Advertisements)
3. 根据前缀生成地址子网通告: 除去本地链路地址(FE80开头),终端还有两个根据Prefix生成的地址(一个是主用,一个是临时用), 生成后,需要站在村里最高的地方吼一嗓子,咱以后就叫王二麻子了,没人争,这个地址就是你用了。
4. 通告路由器自己的新地址:当两个地址都没人争后,麻溜地跑到村长那里去注册(可能村里不止村长一个人能出去,书记也是可以的):村长啊,我准备用王二麻子作为艺名,找几个笔友,发展成老婆,以后有给王二麻子的信,记得转交我哦
DHCPv6地址分配
1. 终端上线后,发起RS(Router Solicitation)
2. 路由器回复RA, flags中Managed address configuration标记位置位
3. 终端按照自动地址配置,获得两个自动配置地址
4. 终端发起组播DHCPv6请求(Solicit)
5. DHCPv6 Server通告自己的存在并分配地址(相当于DHCP Offer)
6. 终端发起Request(我就用这个地址了哈,DHCPv6 Server回应relpy(是的)
7. 终端同样的需要将该地址通告村长
网络配置
vim /etc/sysctl.conf
输入
net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0
net.ipv6.conf.all.forwarding = 1
参数参数设置
vim /etc/sysconfig/network
输入
NETWORKING_IPV6=yes
IPV6FORWARDING=yes
HOSTNAME=testserver
ONBOOT=yes
接口配置文件
vim /etc/sysconfig/network-scripts/ifcfg-br1
输入
IPV6INIT=yes
IPV6_AUTOCONF=no
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6ADDR=2020:102:101:1::1/64
IPV6FORWARDING=yes
IPV6_FAILURE_FATAL=no
IPV6_PEERROUTES=yes
安装radvd
yum -y install radvd
配置radvd
cat /etc/radvd.conf
interface br1
{
AdvManagedFlag off; #off为自动地址配置,on为DHCPv6地址分配
AdvSendAdvert on;
AdvOtherConfigFlag off; #off为自动地址配置,on为DHCPv6地址分配
AdvLinkMTU 1480;
MinRtrAdvInterval 30;
MaxRtrAdvInterval 100;
prefix 2020:102:101:1::/64
{
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr on;
};
};
启动服务
systemctl start radvd.service
systemctl enable radvd.service
终端后的地址后,在CentOS Server上通过ip -6 neighbor show查看IPv6 邻居缓存
通过ping6查看邻居连通性(注意终端防火墙配置允许ICMPv6)
DHCPv6允许更加灵活的配置方式和更多的参数下发。
DHCP Server安装
[root@172-12-0-100 ~]# yum install dhcp
修改radvd配置文件中两个参数:
AdvManagedFlag on;
AdvOtherConfigFlag on;
保存后,重启服务:
systemctl restart radvd.service
配置dhcpv6
vim /etc/dhcp/dhcpd6.conf
输入
default-lease-time 604800;
preferred-lifetime 604800;
option dhcp-renewal-time 1800;
option dhcp-rebinding-time 3600;
allow leasequery;
option dhcp6.name-servers 2020:102:101:1::1;
option dhcp6.domain-search "testserver";
option dhcp6.preference 255;
option dhcp6.rapid-commit;
option dhcp6.info-refresh-time 21600;
dhcpv6-lease-file-name "/var/lib/dhcpd/dhcpd6.leases";
subnet6 2020:102:101:1::/64 {
range6 2020:102:101:1::100 2020:102:101:1::200;
}
启用服务
systemctl enable dhcpd6
systemctl start dhcpd6
注意需要开启udp 547端口,否则DHCPv6报文无法到达Server上层
firewall-cmd --add-port=547/udp –permanent
firewall-cmd –reload
终端上线获得地址后,可在Server的lease记录中查到
Window下查看IPv6邻居
netsh interface ipv6 show neighbor
yum install bind
确认配置中开启ipv6接口监听
cat /etc/named.conf
启动服务
systemctl enable named
systemctl start named
放开防火墙端口
firewall-cmd --add-port=53/udp –permanent
firewall-cmd –reload
页面更新:2024-03-07
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