ICMPv6

1、ICMPV6
1）基本功能
(1)unreachabel
(2)packet too big
2)ICMPV6 type 135 136--->取代ARP
tyep 135 邻居请求
源地址：AGUA 目标地址：被请求节点组播地址
type 136 邻居通告
源地址：AGUA 目标地址：AUGA
R1#sh ipv6 neighbors ---->sh arp
R1#sh ipv6 neighbors
IPv6 Address                              Age Link-layer Addr State
Interface
2001::2                                     0 ca01.0b60.0000  REACH Fa0/0
FE80::C801:BFF:FE60:0                       0 ca01.0b60.0000  DELAY Fa0/0
3）ICMPV6 type 133 134--->取代DHCP
type 133
源地址：link-local 目标地址：ff02::2
type 134:link-local 目标地址：FF02::1
R1(config-if)#ipv6 address autoconfig
R2(config)#ipv6 unicast-routing
如果是路由器和路由连接，可以不发送router通告
R2(config-if)#no ipv6 nd suppress-ra

2、EUI-64
2001::C800:0BFF:FE60:0000
FE80::C800:0BFF:FE60:0000
          ca00.0b60.0000
把MAC从中间分开--->ca000b-600000--->中间插入fffe--->ca00-0bff-fe60-0000---> 从左边算起第7位1->0 0->1-->c800-0bff-fe60-0000