---> Basically we will assign IPV6 address with /64 Subnet Mask on Interface unless it is loopback interface.
--> Loopback Interfaces are assigned with /128 Subnet Mask in IPV6 similar to /32 Subnet Mask in IPV4.
--> By default ipv6 routing is disabled. we need to enable it by using ipv6 unicast-routing command.
---> We can enable Stateless Auto configuration so that hosts can get the IPV6 address automatically by using NDP.
---> In order to enable SLAAC use following commands,
Router(config)# interface e0/0
Router(config-if)# ipv6 address autoconfig
To verify SLAAC ( How many Addresses are assigned)
H2#sh ipv6 int e0/0
Ethernet0/0 is up, line protocol is up IPv6 is enabled, link-local address is FE80::A8BB:CCFF:FE00:5D00
No Virtual link-local address(es): Stateless address autoconfig enabled
Global unicast address(es):
2001:DB8:1:56:A8BB:CCFF:FE00:5D00, subnet is 2001:DB8:1:56::/64 [EUI/CAL/PRE]
valid lifetime 2591989 preferred lifetime 604789
2001:DB8:1:57:A8BB:CCFF:FE00:5D00, subnet is 2001:DB8:1:57::/64 [EUI/CAL/PRE]
valid lifetime 2591989 preferred lifetime 604789
2001:DB8:1:58:A8BB:CCFF:FE00:5D00, subnet is 2001:DB8:1:58::/64 [EUI/CAL/PRE]
valid lifetime 2591989 preferred lifetime 604789
Joined group address(es): FF02::1 FF02::1:FF00:5D00 MTU is 1500 bytes ICMP error messages limited to one every 100 milliseconds ICMP redirects are enabled ICMP unreachables are sent ND DAD is enabled, number of DAD attempts: 1 ND reachable time is 30000 milliseconds (using 30000) Default router is FE80::A8BB:CCFF:FE00:5A00 on Ethernet0/0
---> Each and Every Interface in IPV6 is assigned with two addresses
i) Link Local Address
ii) Global IPV6 or Unique Local Address
--> The DAD ( Duplicate Address Detection) is performed first on the Interface whenever we assign IPv6 address
--> Loopback Interfaces are assigned with /128 Subnet Mask in IPV6 similar to /32 Subnet Mask in IPV4.
--> By default ipv6 routing is disabled. we need to enable it by using ipv6 unicast-routing command.
---> We can enable Stateless Auto configuration so that hosts can get the IPV6 address automatically by using NDP.
---> In order to enable SLAAC use following commands,
Router(config)# interface e0/0
Router(config-if)# ipv6 address autoconfig
To verify SLAAC ( How many Addresses are assigned)
H2#sh ipv6 int e0/0
Ethernet0/0 is up, line protocol is up IPv6 is enabled, link-local address is FE80::A8BB:CCFF:FE00:5D00
No Virtual link-local address(es): Stateless address autoconfig enabled
Global unicast address(es):
2001:DB8:1:56:A8BB:CCFF:FE00:5D00, subnet is 2001:DB8:1:56::/64 [EUI/CAL/PRE]
valid lifetime 2591989 preferred lifetime 604789
2001:DB8:1:57:A8BB:CCFF:FE00:5D00, subnet is 2001:DB8:1:57::/64 [EUI/CAL/PRE]
valid lifetime 2591989 preferred lifetime 604789
2001:DB8:1:58:A8BB:CCFF:FE00:5D00, subnet is 2001:DB8:1:58::/64 [EUI/CAL/PRE]
valid lifetime 2591989 preferred lifetime 604789
Joined group address(es): FF02::1 FF02::1:FF00:5D00 MTU is 1500 bytes ICMP error messages limited to one every 100 milliseconds ICMP redirects are enabled ICMP unreachables are sent ND DAD is enabled, number of DAD attempts: 1 ND reachable time is 30000 milliseconds (using 30000) Default router is FE80::A8BB:CCFF:FE00:5A00 on Ethernet0/0
---> Each and Every Interface in IPV6 is assigned with two addresses
i) Link Local Address
ii) Global IPV6 or Unique Local Address
--> The DAD ( Duplicate Address Detection) is performed first on the Interface whenever we assign IPv6 address
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